GB 5842-1996 Liquefied petroleum gas cylinders

This standard specifies the types and parameters, technical requirements, test methods, inspection rules, marking, coating, packaging, transportation and storage of liquefied petroleum gas cylinders. This standard applies to steel welded gas cylinders that can be used at normal ambient temperature (-40℃~60℃), with a test pressure of 3.2MPa, a nominal volume of 23.5L, 35.5L, 118L and can be repeatedly filled with liquefied petroleum gas. GB 5842-1996 Liquefied Petroleum Gas Cylinders GB5842-1996 Standard Download Decompression Password: www.bzxz.net

National Standard of the People's Republic of China
Liquefied petroleum gas cylinders
Liquefied petroleum gas cylinders1 Subject content and scope of application
GB 5842-1996
Replaces GB5842-86
This standard specifies the types and parameters, technical requirements, test methods, inspection rules, marking, coating, packaging, transportation and storage of liquefied petroleum gas cylinders.
This standard applies to steel welded gas cylinders (hereinafter referred to as cylinders) used at normal ambient temperature (-40°C to 60°C), with a test pressure of 3.2MPa and a nominal volume of 23.5L, 35.5I, 118L that can be repeatedly filled with liquefied petroleum gas. 2 Reference standards
Metal tensile test method
Metal bending test method
GB 2323
General tolerances Unspecified tolerances for linear dimensions
GB/T 1804
GB2651
GB2653
GB6653
GB 7144
GB8335
GB9251
GB 11174
Tensile test method for welded joints
Bending and flattening test method for welded joints
Steel plates for welded gas cylinders
Color marking of gas cylinders
Special threads for gas cylinders
Hydrostatic test method for gas cylinders
Liquefied petroleum gas
GB12137
Gas cylinder airtightness test method
GB/T13005
Terminology for gas cylinders
GB 15385
JB4708
JB4730
3 Symbols
Test method for hydraulic bursting of gas cylinders
Welding procedure assessment for steel pressure vessels
Non-destructive testing of pressure vessels
Weld seam misalignment, mm;
D)---Inner diameter of steel cylinder, mm;
Outer diameter of steel cylinder, mm;
Bending test bending axis diameter, mm;
E Butt weld angular height, mm;
Difference between the maximum and minimum diameters of the same cross section of the cylinder, mm; K
Oval head shape coefficient;
Burst pressure of the cylinder, MPa;
Approved by the State Administration of Technical Supervision on January 25, 1996 and implemented on October 1, 1996
P. Test pressure of the cylinder, MPa ;
S—nominal wall thickness of bottle body (cylinder), mm;
calculated wall thickness of simplified body, mm,
S2-calculated wall thickness of head, mm;
designed wall thickness of bottle body, mm;
tensile strength, MPa;
actual measured value of tensile strength, MPa;
yield point, MPa;
elongation of specimen, %;
weld coefficient;
circumference tolerance, mm;
--total height tolerance of head, mm.
Specifications and types of steel cylinderswww.bzxz.net
Specifications of steel cylinders (see Table 1)
Inner diameter of steel cylinder, mm
Nominal volume,
Outer diameter of base, mm
Outer diameter of shield, mm
Height of steel cylinder, mm
Filling weight, kg
4.2 Type of steel cylinder (see Figure 1)
GB 5842—1996
YSP-10
YSP-15
YSP-50
5 Materials
General provisions
GB58421996
YSP-10
YSP-15
YSP·50 type
1 Base; 2—Lower end cap; 3—Upper end cap; 4—Valve seat; 5—Shield; 6—Valve; 7—Cylinder 5.1.1 The material of the cylinder body (referring to the cylinder body, end cap and other pressure-bearing components) must be killed steel smelted in an open-hearth furnace, electric furnace or oxygen-blowing converter, with good stamping and welding properties, and should comply with the provisions of GB6653. 5.1.2 All parts welded to the cylinder body must be made of materials that are compatible with the weldability of the main material. 5.1.3 The tensile strength of the welds made of the welding materials used shall not be lower than the lower limit of the specified value of the tensile strength of the parent material. 5.1.4 The materials (including welding materials) shall comply with the provisions of the relevant standards and must have a quality certificate (original). 5.1.5 The cylinder manufacturing unit must verify the chemical composition of the main materials used to manufacture the cylinders according to the furnace and tank numbers, and verify the mechanical properties according to the batch number. The verified qualified materials shall be marked with materials, and the verification and analysis results shall be consistent with Appendix C (supplementary) and the quality certificate. 5.2 Chemical composition
The chemical composition of the main material of the steel cylinder shall meet the following ranges: Carbon
Sulfur plus phosphorus
5.3 Mechanical properties
Not more than
Not more than
Not more than
Not more than
Not more than
GB 5842--1996
5.3.1 The yield point of the main material of the steel cylinder shall not be greater than 0.8 times its tensile strength. 5.3.2 The elongation of the main material of the steel cylinder shall not be less than 22%. 6 Design
6.1--General provisions
6.1.1 The body of the YSP-10 and YSP-15 steel cylinders consists of two parts, with only one girth weld; the body of the YSP-50 steel cylinder consists of two heads and a simplified body, with two girth welds and one longitudinal weld. YSP-10, YSP-15, and YSP-50 all use shrink-fit inserts.
6.1.2 Design and calculate the wall thickness of the pressure-bearing components of the cylinder, and the strength parameter of the material should use the yield point. 6.2 The calculated wall thickness of the cylinder is calculated according to the following formula: So
Where: the yield point of the material. The minimum value specified in the standard should be selected; the weld coefficient of the weld for radiographic inspection is 0.9. 6.3 The calculated wall thickness of the head is calculated according to the following formula: Where: K is the shape coefficient of the elliptical head; So=
20— Pu
YSP-10 and YSP-15 cylinders K=0.8, YSP-50 cylinders K=1.0; the yield point of the material should use the minimum value specified in the standard. 6.4 The design wall thickness S of the cylinder body shall also comply with the following provisions: S≥250
（2）
.（3)
6.5 The nominal wall thickness of the cylinder body and the end cap shall be equal. The negative deviation of the steel plate thickness and the amount of process thinning shall also be considered in determining the nominal wall thickness. 6.6 Design of spare parts
6.6.1 The design of spare parts shall facilitate operation and weld inspection. 6.6.2 The structural shape of spare parts and their connection with the cylinder body shall prevent liquid accumulation, and the base shall have ventilation and drainage holes. 6.6.3 The cylinder shall be equipped with a shield to protect the cylinder valve, and the connection between the cylinder and the shield and the base shall adopt a welded structure. The edge of the shield shall be rolled into a reinforcement ring.
6.6.4 The sealing material of the cylinder shall not react chemically with the liquefied petroleum gas contained therein. 6.6.5 The thread of the bottle mouth shall comply with the provisions of GB8335. 7 Manufacturing
7.1 Welding procedure qualification
7.1.1 Before or during the production of steel cylinders, when changing materials (including welding materials), welding procedures or replacing welding equipment, welding procedure qualification shall be carried out in accordance with JB4708. 7.1.2 Welders and non-destructive testing personnel who carry out welding procedure qualification shall meet the requirements of Articles 7.2.1 and 8.1.1 respectively. 7.1.3 The welds for welding procedure qualification shall represent the main butt and fillet welds of the steel cylinder. 7.1.4 Welding procedure qualification can be carried out on the steel cylinder body or on the welding procedure test plate. 7.1.5 Welding procedure test plate qualification:
The welding procedure test plate shall be subjected to visual inspection and radiographic inspection, and the inspection results shall comply with the provisions of Articles 7.3.3 and 8.1; a.
The welded joints shall be subjected to tensile and bending tests. GB5842—1996
Number of test plates: 2 for tension, 4 for transverse bending (2 for positive and negative bending), the test method and qualification standard shall comply with the requirements of Articles 8.3.3.4 and 8.3.3.5.
7.1.6 The results of the welding process assessment shall be reviewed and approved by the chief technical officer of the manufacturer and stored in the factory's technical files. 7.2 General provisions for welding
7.2.1 The welding of steel cylinders must be performed by welders who have passed the examination in accordance with the "Boiler Pressure Vessel Welder Examination Rules" and hold valid certificates. The welder code and material brand shall be marked at appropriate locations on the steel cylinder. 7.2.2 The welding of the main welds of the steel cylinder must strictly comply with the qualified welding process. 7.2.3 The main welds of the cylinder should be welded by automatic welding. 7.2.4 The shape and size of the welding groove should comply with the requirements of the drawing. The surface of the groove should be clean and smooth, and there should be no defects such as cracks, delamination and slag inclusions.
7.2.5 Welding (including repair welding) should be carried out indoors, and the relative humidity should not be greater than 90%, otherwise effective measures should be taken. When the temperature of the welded part is lower than 0C, it should be preheated at the start of welding. 7.2.6 When welding, arcing should not be initiated at non-welding locations. The longitudinal weld should have an arc-starting plate and an arc-extinguishing plate, and the plate length should not be less than 100mm. To remove the arc-starting and arc-extinguishing plates, the cutting method should be adopted, and the knocking method is strictly prohibited. The cut-off area should be ground flat. 7.3 Weld
7.3.1 The excess height of the bottle body butt weld is 0~2.5mm; the difference between the widest and narrowest parts of the same weld should not be greater than 4mm. 7.3.2 When there is no provision in the drawing, the welding height of the fillet weld shall not be less than the thickness of the thinner one of the welds, and its geometric shape shall smoothly transition to the surface of the parent material.
7.3.3 The appearance of the weld surface shall comply with the following provisions: The weld and heat-affected zone shall not have defects such as cracks, pores, arc pits, slag inclusions and incomplete fusion; a.
The main weld is not allowed to undercut, and the welds of the parts welded to the bottle body are not allowed to undercut on the bottle body side; b.
The weld surface shall not have depressions or irregular mutations; c.
d. The spatter on both sides of the weld must be cleaned up. 7.4 Repair of welds
7.4.1 The repair of welds shall have a repair process that has been evaluated and qualified, and shall be strictly implemented. Repair shall be carried out by automatic welding. 7.4.2 The repaired area shall be re-inspected for appearance and radiography and qualified. 7.4.3 The same part of the weld is allowed to be repaired once. 7.4.4 The repaired parts shall be recorded in the product production inspection record. 7.5 Simplified body
7.5.1 When the cylinder is made of steel plate, the rolling direction of the steel plate shall be consistent with the circumferential direction of the cylinder. 7.5.2 After the cylinder is welded, it shall meet the following requirements: The maximum and minimum diameter difference e of the same cross section of the cylinder shall not exceed 0.01D: a.
b. The misalignment 6 of the longitudinal weld of the cylinder shall not exceed 0.1S (Figure 2); The angular height E of the longitudinal weld of the cylinder shall not exceed 0.1S+2mm (Figure 3), measured with a sample with a length of 1/2D and not more than 300mm.
7.6.1 The head shall be made of a whole piece of steel plate.
7.6.2 The shape tolerance and size tolerance of the head shall not exceed the provisions of Table 2. 535
Circumference tolerance
GB5842 - 1996
1/2D.H<300
Maximum and minimum diameter difference
7.6.3The measured value of the minimum wall thickness of the head shall not be less than the calculated wall thickness. 7.6.4The depth of the longitudinal wrinkles on the straight edge of the head shall not be greater than 0.25%D. . 1/2D and 300
7.7The limit deviation of the dimensions without tolerance shall comply with the provisions of GB/T1804. The specific requirements are as follows: a.
The machined parts are GB/T1804-m;
The non-machined parts are GB/T1804-c;
The length dimension is GB/T1804-V.
7.8 Assembly
7.8.1 The pressure-bearing components of the cylinder shall be visually inspected before assembly, and those that fail to meet the requirements shall not be assembled. Total height tolerance
7.8.2 The misalignment 6 of the butt welds between the upper and lower heads or the head and the cylinder shall not exceed 0.25S; the angular height E shall not exceed 0.1S+2mm; the length of the inspection ruler used shall not be less than 300mm. 7.8.3 The assembly of spare parts shall comply with the requirements of the drawings. 7.9 Heat treatment
7.9.1 After all welding is completed, the cylinder shall be subjected to overall normalizing or stress relieving heat treatment, and local heat treatment is not allowed. 7.9.2 When the cylinder is heat treated, there must be an approved heat treatment process and strict records. 7.9.3 The heat treatment method shall be recorded in the product certificate. 8 Inspection rules and test methods
8.7 Radiographic inspection
8.1.1 Nondestructive inspection personnel for steel cylinders must pass the examination and hold a valid certificate. 8.1.2 For YSP-10 and YSP-15 steel cylinders, one cylinder shall be selected for every 50 cylinders (one cylinder shall be selected if there are less than 50 cylinders) in the production order, and 100% radiographic inspection shall be conducted on the bad welds. If unqualified, two more cylinders shall be selected for inspection. If there is still one unqualified cylinder, each cylinder shall be inspected. 536
GB5842 --- 1996
8.1.3 For YSP-50 steel cylinders that are subjected to partial radiographic inspection, each cylinder shall be inspected. Each cylinder shall be subjected to radiographic inspection of not less than 20% of the total length of the longitudinal and circumferential welds, including the intersection of the longitudinal and circumferential welds. If defects exceeding the standard are found, the weld length should be extended by 20% at both ends of the defect for inspection. - If the length of one end is insufficient, it should be supplemented at the other end. If there are still defects exceeding the standard, 100% weld inspection should be carried out.
8.1.4 The results of weld radiographic inspection shall be evaluated according to JB4730, and level III is qualified. 8.1.5 The quality of welds that have not been inspected by radiography shall also comply with the provisions of Article 8.1.4. 8.2 Inspection of each piece
8.2.1 Appearance inspection
8.2.1.1 The surface of the cylinder shall be smooth and shall not have cracks, heavy skin, slag inclusions, pits with a depth exceeding 0.5mm, scratches with a depth exceeding 0.3mm, corrosion and other defects.
8.2.1.2 The appearance of the weld shall comply with the provisions of Article 7.3.3. 8.2.1.3 The spare parts of the cylinder shall comply with the provisions of Articles 6.6 and 7.8.3. 8.2.1.4 The inside of the cylinder should be dry and clean.
8.2.2 The weight and volume of each cylinder should be measured, and the measured volume should not be less than its nominal volume. 8.2.3 Pressure test
8.2.3.1 The pressure test shall be carried out in accordance with the provisions of GB9251. Two force gauges with the same range and an accuracy of not less than Class 1.5 shall be used for pressure measurement. The range of the pressure gauge is 1.5 to 2.0 times the test pressure. The calibration period of the pressure gauge shall not exceed three months. 8.2.3.2 The test environment temperature and the test water temperature shall not be lower than 5℃. 8.2.3.3 During the test, the pressure shall be increased slowly to the test pressure at a pressure increase rate of no more than 0.5MPa per second, and maintained for 1min. The cylinder shall be checked for macroscopic deformation and leakage, and the pressure gauge is not allowed to drop back. 8.2.3.4 The same cylinder shall not be subjected to continuous pressure tests. 8.2.4 Air tightness test
8.2.4.1 The air tightness test of the cylinder shall be carried out after the pressure test is qualified. The air tightness test shall be carried out in accordance with the provisions of GB12137, and the test pressure shall be 2.1 MPae
8.2.4.2 The pressure shall be increased slowly during the test. After reaching the test pressure, the pressure shall be kept constant. Check that there is no leakage in the cylinder. 8.2.4.3 When conducting the air tightness test, effective protective measures shall be adopted to ensure the safety of the operator. 8.2.5 Repair
8.2.5.1 If leakage is found on the weld of the cylinder during the pressure test or air tightness test, it shall be repaired in accordance with the requirements of Article 7.4. 8.2.5.2 After the weld of the cylinder is repaired, the cylinder shall be re-heat treated as a whole. 8.2.5.3 The cylinder with the weld repaired shall be re-tested for pressure resistance and air tightness in accordance with the provisions of Articles 8.2.3 and 8.2.4. 8.3 Batch inspection
8.3.1 Batch
For the same specifications of steel cylinders produced continuously with the same brand of materials, the same welding process and the same heat treatment process, batch inspection shall be conducted. 8.3.2 No more than 500 steel cylinders are considered as a batch, and one cylinder for mechanical performance test and one cylinder for water pressure burst test shall be selected from each batch of steel cylinders. If the number of steel cylinders produced continuously per month is less than 500, one cylinder for mechanical performance test and one cylinder for water pressure burst test shall be selected from the produced steel cylinders per month. 8.3.3 Mechanical performance test
8.3.3.1 Sampling requirements:
a.For YSP-10 and YSP-15 cylinders, a parent material tensile specimen shall be cut longitudinally from the cylindrical part of the cylinder. If the length of the cylindrical part is not enough, it can be cut from the convex part of the head. Cut one positive and negative bend specimen from any part of the parent material, and cut one tensile, transverse positive bend and negative bend specimen of the welded joint from the girth weld (Figure 4). b. For YSP-50 cylinders, a parent material tensile specimen shall be cut longitudinally from the cylinder, a parent material tensile specimen shall be cut from the top of the head, one positive and negative bend specimen shall be cut from any part of the parent material, and one tensile, transverse positive bend and negative bend specimen shall be cut from the longitudinal weld. If the welding processes of the girth weld and the longitudinal weld are different, the same number of specimens shall be cut from the girth weld (Figure 5). 537
1 tensile test specimen
1 positive bend test specimen
1 reverse bend test specimen
1 tensile test specimen
1 positive bend test specimen
1 reverse bend test specimen
1 tensile test specimen
1 positive bend test specimen
1 reverse bend test specimen
(required only when the welding process is different from that of the longitudinal weld)
GB5842-1996
1 tensile test specimen
1 tensile test specimen
1 tensile test specimen
1 tensile test specimen
8.3.3.2 The front and back sides of the weld on the test specimen shall be machined to make them flush with the plate surface. For specimens that are not flat enough, cold pressing can be used to correct them.
8.3.3.3 The cross section of the weld of the specimen shall be good and shall not have defects such as cracks, lack of fusion, lack of penetration, slag inclusions and pores. 8.3.3.4 Tensile test
8.3.3.4.1 The tensile test of the cylinder base material shall be carried out in accordance with GB228, and the test result requirements are as follows: the actual tensile strength oba shall not be lower than the lower limit of the value specified in the parent material standard; a.
b. The elongation 5 value of the short specimen shall meet the requirements of Article 5.3.2. 8.3.3.4.2 The tensile test of the cylinder welded joint shall be carried out in accordance with GB2651. The specimen shall be a shoulder plate-shaped specimen specified in this standard, and its actual tensile strength shall not be lower than the lower limit specified in the parent material standard. 8.3.3.5 Bending test
8.3.3.5.1 The bending test of the cylinder base material shall be carried out in accordance with GB232, and the bending test of the welded joint shall be carried out in accordance with GB2653. 8.3.3.5.2
The ratio n between the bending axis diameter d and the specimen thickness S shall comply with the provisions of Table 3. Actual tensile strength aba, MPa
>430～510
>510～590
>590～685
GB5842-1996
8.3.3.5.3 During the bending test, the distance between the two supporting rollers shall ensure that the specimen can just pass through when bent (Figure 6). d+2.1s
8.3.3.5.4 The parent material specimen shall be bent to 180°. The welded joint specimen shall be free of cracks when bent to 100°, but the early cracking of the specimen edge shall not be counted. 8.3.4 Water pressure burst test
8.3.4.1 The water pressure burst test shall be carried out in accordance with the provisions of GB15385, and the following data shall be measured: a.
Water volume of the cylinder;
Volume deformation of the cylinder under the water pressure test pressure; Internal pressure when the cylinder reaches yield;
Pressure P when the cylinder ruptures. And volume deformation rate. 8.3.4.2 When conducting a water pressure burst test, the water delivery rate of the water pump per hour is generally 1~~2 times the water volume of the cylinder. 8.3.4.3 Before conducting a water pressure burst test, the weight of the empty cylinder shall be weighed first; after filling with water, the total weight of the cylinder and water shall be weighed, so as to calculate the water volume of the cylinder.
8.3.4.4 When conducting a water pressure burst test, the pressure shall be increased slowly. First increase the pressure to 2.1MPa, then release the pressure, repeat several times to discharge the gas in the water; after the gas is completely discharged, increase the pressure to the pressure test pressure Ph, maintain the pressure for at least 30s, and measure the total volume deformation of the cylinder; then increase the pressure and measure, record the pressure, time and water inflow, so as to draw the pressure-time and pressure-water inflow curves, determine the pressure at which the cylinder begins to yield, until it bursts and determines the bursting pressure and total water inflow. 8.3.4.5 The measured bursting pressure value P shall not be less than the result calculated by the following formula: 2S.0p
Ph≥ D.-s
（4）
8.3.4.6 The volume deformation rate when the cylinder ruptures (the ratio of the increase in the volume of the cylinder during the burst to the water volume of the cylinder before the test) shall be greater than 10%. 8.3.4.7 If the cylinder is broken and the fragments or fractures occur at the corner weld of the valve seat, the oval part of the head, the longitudinal weld, and the girth weld (except those perpendicular to the girth weld), the test is unqualified. 8.4 Repeated test
8.4.1 If the items of each test are unqualified, the test can be carried out again after treatment or repair. If it still fails, it will be scrapped. 539
GB5842-1996
8.4.2 When conducting the test, if there is evidence that it is an operating error or a measurement error, a second test should be conducted on the same cylinder or another cylinder in the same batch of cylinders. If the second test is qualified, the first test can be ignored. 8.4.3 If the mechanical property test is unqualified, 2 cylinders in the same batch of cylinders are randomly selected for mechanical property test; 2 cylinders are subjected to water pressure burst test.
8.4.4 If the re-test still fails, the batch of cylinders shall be deemed unqualified. However, this batch of cylinders is allowed to be reheat treated or repaired and then heat treated, and retested as a new batch in accordance with the provisions of Article 8.3. 9 Marking, coating, packaging, transportation, storage 9.1 Marking
9.1.1 The arrangement and content of the markings on the cylinders shall comply with the provisions of the gas cylinder safety supervision regulations. The markings on the cylinders shall be permanent 9.1.2 The steel stamp mark shall be obvious and clear, and shall be directly stamped on the welding shield or head, or stamped on the steel stamp plate welded on the head. The steel stamp mark directly stamped on the head shall be smooth without sharp corners and shall not affect the safe use of the cylinder. The steel stamp mark shall not be replaced by a nameplate. 9.2 Coating
9.2.1 After all the inspection items of the cylinder are qualified, the surface oil, rust, scale, welding spatter and other debris shall be removed and kept dry before coating.
9.2.2 The color of the cylinder should comply with the provisions of GB7144, and the words "liquefied petroleum gas" should be written in red, with the font being 60-80mm high in Fangsong style Chinese.
9.2.3 The coating should be uniform, without defects such as bubbles, flow marks, cracks and peeling. 9.3 Packaging
9.3.1 The valve port of the cylinder should be sealed to prevent the entry of foreign objects during transportation and storage. 9.3.2 The cylinders leaving the factory should be packaged according to the requirements of the agreement signed with the user. If the user has no requirements, they shall be packaged according to the packaging regulations. 9.4 The cylinders shall be sealed in the Avoid collision and scratches during transportation. 9.5 Steel cylinders should be stored in a place without corrosive gases, ventilated, dry, and not exposed to sunlight. 10 Product Certificate and Quality Certificate
10.1 Each steel cylinder leaving the factory should have a product certificate. The format of the certificate is shown in Appendix A (Supplement). The content recorded in the product certificate should be consistent with the production inspection records kept by the manufacturer. 10.2 Each batch of steel cylinders leaving the factory should have a quality certificate; if there is more than one user of the batch of steel cylinders, each user should have a copy of the batch inspection quality certificate, in the same format as the original. 540
Name of steel cylinder
Factory number
Factory batch number
Factory date
Manufacturing license number
GB5842—1996
Appendix A
Product certificate format
(Supplement)
x××××x× Factory
Liquefied petroleum gas steel cylinder
Product certificate
The manufacture of this product complies with GB5842-1996 and the design drawing requirements. Request, passed the inspection. Inspection Section Chief (Seal)
Note: Specifications must be unified, the core size is 150mm×100mm. Special seal for quality inspection
Filling medium
Maximum filling volume
Weight of cylinder
Measured volume (water volume)
Bottle material
Bottle design wall thickness
Pressure test pressure
Air tightness test pressure
Heat treatment method
Welder code
Inspector signature
GB 5842—19962 The front and back sides of the weld on the specimen shall be machined to be flush with the plate surface. For specimens that are not flat enough, cold pressing can be used to correct them.
8.3.3.3 The cross section of the weld of the specimen shall be good and shall not have defects such as cracks, lack of fusion, lack of penetration, slag inclusions and pores. 8.3.3.4 Tensile test
8.3.3.4.1 The tensile test of the cylinder parent material shall be carried out in accordance with GB228, and the test result requirements are as follows: the actual tensile strength oba shall not be lower than the lower limit of the value specified in the parent material standard; a.
b. The elongation 5 value of the short specimen shall meet the requirements of Article 5.3.2. 8.3.3.4.2 The tensile test of the welded joint of the cylinder shall be carried out in accordance with GB2651. The specimen shall be a shoulder plate-shaped specimen specified in this standard, and its actual tensile strength shall not be lower than the lower limit specified in the parent material standard. 8.3.3.5 Bending test
8.3.3.5.1 The bending test of cylinder base material shall be carried out in accordance with GB232, and the bending test of welded joints shall be carried out in accordance with GB2653. 8.3.3.5.2
The ratio n between the bending axis diameter d and the specimen thickness S shall comply with the provisions of Table 3. Actual tensile strength aba, MPa
>430～510
>510～590
>590～685
GB5842-1996
8.3.3.5.3 In the bending test, the distance between the roller surfaces of the two supporting rollers shall ensure that the specimen can just pass through when bent (Figure 6). d+2.1s
8.3.3.5.4 When the parent material specimen is bent to 180°, there should be no cracks when the welded joint specimen is bent to 100°, but the early cracking of the specimen edge is not counted. 8.3.4 Water pressure burst test
8.3.4.1 The water pressure burst test shall be carried out in accordance with the provisions of GB15385, and the following data shall be measured: a.
Water volume of the cylinder;
Volume deformation of the cylinder under the water pressure test pressure; Internal pressure when the cylinder reaches yield;
Pressure P when the cylinder ruptures. And volume deformation rate. 8.3.4.2 When conducting a water pressure burst test, the water delivery rate of the water pump per hour is generally 1~~2 times the water volume of the cylinder. 8.3.4.3 Before conducting a water pressure burst test, the weight of the empty cylinder shall be weighed first; after filling with water, the total weight of the cylinder and water shall be weighed, so as to calculate the water volume of the cylinder.
8.3.4.4 When conducting a water pressure burst test, the pressure should be increased slowly. First increase to 2.1MPa, then release the pressure, repeat several times to expel the gas in the water; after the gas is completely exhausted, increase the pressure to the pressure test pressure Ph, maintain the pressure for at least 30s, and measure the total volume deformation of the cylinder; then increase the pressure and measure, record the pressure, time and water intake, so as to draw the pressure-time and pressure-water intake curves, determine the pressure at which the cylinder begins to yield, until it bursts and determines the bursting pressure and total water intake. 8.3.4.5 The measured bursting pressure value P should not be less than the result calculated by the following formula: 2S.0p
Ph≥ D.-s
（4）
8.3.4.6 The volume deformation rate when the cylinder ruptures (the ratio of the increase in the volume of the cylinder during the burst to the water volume of the cylinder before the test) should be greater than 10%. 8.3.4.7 If the cylinder is broken and the fragments or fractures occur at the corner weld of the valve seat, the oval part of the head, the longitudinal weld, and the girth weld (except those perpendicular to the girth weld), the test is unqualified. 8.4 Repeated test
8.4.1 If the items of each test are unqualified, the test can be carried out again after treatment or repair. If it still fails, it will be scrapped. 539
GB5842-1996
8.4.2 When conducting the test, if there is evidence that it is an operating error or a measurement error, a second test should be conducted on the same cylinder or another cylinder in the same batch of cylinders. If the second test is qualified, the first test can be ignored. 8.4.3 If the mechanical property test is unqualified, 2 cylinders in the same batch of cylinders are randomly selected for mechanical property test; 2 cylinders are subjected to water pressure burst test.
8.4.4 If the re-test still fails, the batch of cylinders shall be deemed unqualified. However, this batch of cylinders is allowed to be reheat treated or repaired and then heat treated, and retested as a new batch in accordance with the provisions of Article 8.3. 9 Marking, coating, packaging, transportation, storage 9.1 Marking
9.1.1 The arrangement and content of the markings on the cylinders shall comply with the provisions of the gas cylinder safety supervision regulations. The markings on the cylinders shall be permanent 9.1.2 The steel stamp mark shall be obvious and clear, and shall be directly stamped on the welding shield or head, or stamped on the steel stamp plate welded on the head. The steel stamp mark directly stamped on the head shall be smooth without sharp corners and shall not affect the safe use of the cylinder. The steel stamp mark shall not be replaced by a nameplate. 9.2 Coating
9.2.1 After all the inspection items of the cylinder are qualified, the surface oil, rust, scale, welding spatter and other debris shall be removed and kept dry before coating.
9.2.2 The color of the cylinder should comply with the provisions of GB7144, and the words "liquefied petroleum gas" should be written in red, with the font being 60-80mm high in Fangsong style Chinese.
9.2.3 The coating should be uniform, without defects such as bubbles, flow marks, cracks and peeling. 9.3 Packaging
9.3.1 The valve port of the cylinder should be sealed to prevent the entry of foreign objects during transportation and storage. 9.3.2 The cylinders leaving the factory should be packaged according to the requirements of the agreement signed with the user. If the user has no requirements, they shall be packaged according to the packaging regulations. 9.4 The cylinders shall be sealed in the Avoid collision and scratches during transportation. 9.5 Steel cylinders should be stored in a place without corrosive gases, ventilated, dry, and not exposed to sunlight. 10 Product Certificate and Quality Certificate
10.1 Each steel cylinder leaving the factory should have a product certificate. The format of the certificate is shown in Appendix A (Supplement). The content recorded in the product certificate should be consistent with the production inspection records kept by the manufacturer. 10.2 Each batch of steel cylinders leaving the factory should have a quality certificate; if there is more than one user of the batch of steel cylinders, each user should have a copy of the batch inspection quality certificate, in the same format as the original. 540
Name of steel cylinder
Factory number
Factory batch number
Factory date
Manufacturing license number
GB5842—1996
Appendix A
Product certificate format
(Supplement)
x××××x× Factory
Liquefied petroleum gas steel cylinder
Product certificate
The manufacture of this product complies with GB5842-1996 and the design drawing requirements. Request, passed the inspection. Inspection Section Chief (Seal)
Note: Specifications must be unified, the core size is 150mm×100mm. Special seal for quality inspection
Filling medium
Maximum filling volume
Weight of cylinder
Measured volume (water volume)
Bottle material
Bottle design wall thickness
Pressure test pressure
Air tightness test pressure
Heat treatment method
Welder code
Inspector signature
GB 5842—19962 The front and back sides of the weld on the specimen shall be machined to be flush with the plate surface. For specimens that are not flat enough, cold pressing can be used to correct them.
8.3.3.3 The cross section of the weld of the specimen shall be good and shall not have defects such as cracks, lack of fusion, lack of penetration, slag inclusions and pores. 8.3.3.4 Tensile test
8.3.3.4.1 The tensile test of the cylinder parent material shall be carried out in accordance with GB228, and the test result requirements are as follows: the actual tensile strength oba shall not be lower than the lower limit of the value specified in the parent material standard; a.
b. The elongation 5 value of the short specimen shall meet the requirements of Article 5.3.2. 8.3.3.4.2 The tensile test of the welded joint of the cylinder shall be carried out in accordance with GB2651. The specimen shall be a shoulder plate-shaped specimen specified in this standard, and its actual tensile strength shall not be lower than the lower limit specified in the parent material standard. 8.3.3.5 Bending test
8.3.3.5.1 The bending test of cylinder base material shall be carried out in accordance with GB232, and the bending test of welded joints shall be carried out in accordance with GB2653. 8.3.3.5.2
The ratio n between the bending axis diameter d and the specimen thickness S shall comply with the provisions of Table 3. Actual tensile strength aba, MPa
>430～510
>510～590
>590～685
GB5842-1996
8.3.3.5.3 In the bending test, the distance between the roller surfaces of the two supporting rollers shall ensure that the specimen can just pass through when bent (Figure 6). d+2.1s
8.3.3.5.4 When the parent material specimen is bent to 180°, there should be no cracks when the welded joint specimen is bent to 100°, but the early cracking of the specimen edge is not counted. 8.3.4 Water pressure burst test
8.3.4.1 The water pressure burst test shall be carried out in accordance with the provisions of GB15385, and the following data shall be measured: a.
Water volume of the cylinder;
Volume deformation of the cylinder under the water pressure test pressure; Internal pressure when the cylinder reaches yield;
Pressure P when the cylinder ruptures. And volume deformation rate. 8.3.4.2 When conducting a water pressure burst test, the water delivery rate of the water pump per hour is generally 1~~2 times the water volume of the cylinder. 8.3.4.3 Before conducting a water pressure burst test, the weight of the empty cylinder shall be weighed first; after filling with water, the total weight of the cylinder and water shall be weighed, so as to calculate the water volume of the cylinder.
8.3.4.4 When conducting a water pressure burst test, the pressure should be increased slowly. First increase to 2.1MPa, then release the pressure, repeat several times to expel the gas in the water; after the gas is completely exhausted, increase the pressure to the pressure test pressure Ph, maintain the pressure for at least 30s, and measure the total volume deformation of the cylinder; then increase the pressure and measure, record the pressure, time and water intake, so as to draw the pressure-time and pressure-water intake curves, determine the pressure at which the cylinder begins to yield, until it bursts and determines the bursting pressure and total water intake. 8.3.4.5 The measured bursting pressure value P should not be less than the result calculated by the following formula: 2S.0p
Ph≥ D.-s
（4）
8.3.4.6 The volume deformation rate when the cylinder ruptures (the ratio of the increase in the volume of the cylinder during the burst to the water volume of the cylinder before the test) should be greater than 10%. 8.3.4.7 If the cylinder is broken and the fragments or fractures occur at the corner weld of the valve seat, the oval part of the head, the longitudinal weld, and the girth weld (except those perpendicular to the girth weld), the test is unqualified. 8.4 Repeated test
8.4.1 If the items of each test are unqualified, the test can be carried out again after treatment or repair. If it still fails, it will be scrapped. 539
GB5842-1996
8.4.2 When conducting the test, if there is evidence that it is an operating error or a measurement error, a second test should be conducted on the same cylinder or another cylinder in the same batch of cylinders. If the second test is qualified, the first test can be ignored. 8.4.3 If the mechanical property test is unqualified, 2 cylinders in the same batch of cylinders are randomly selected for mechanical property test; 2 cylinders are subjected to water pressure burst test.
8.4.4 If the re-test still fails, the batch of cylinders shall be deemed unqualified. However, this batch of cylinders is allowed to be reheat treated or repaired and then heat treated, and retested as a new batch in accordance with the provisions of Article 8.3. 9 Marking, coating, packaging, transportation, storage 9.1 Marking
9.1.1 The arrangement and content of the markings on the cylinders shall comply with the provisions of the gas cylinder safety supervision regulations. The markings on the cylinders shall be permanent 9.1.2 The steel stamp mark shall be obvious and clear, and shall be directly stamped on the welding shield or head, or stamped on the steel stamp plate welded on the head. The steel stamp mark directly stamped on the head shall be smooth without sharp corners and shall not affect the safe use of the cylinder. The steel stamp mark shall not be replaced by a nameplate. 9.2 Coating
9.2.1 After all the inspection items of the cylinder are qualified, the surface oil, rust, scale, welding spatter and other debris shall be removed and kept dry before coating.
9.2.2 The color of the cylinder should comply with the provisions of GB7144, and the words "liquefied petroleum gas" should be written in red, with the font being 60-80mm high in Fangsong style Chinese.
9.2.3 The coating should be uniform, without defects such as bubbles, flow marks, cracks and peeling. 9.3 Packaging
9.3.1 The valve port of the cylinder should be sealed to prevent the entry of foreign objects during transportation and storage. 9.3.2 The cylinders leaving the factory should be packaged according to the requirements of the agreement signed with the user. If the user has no requirements, they shall be packaged according to the packaging regulations. 9.4 The cylinders shall be sealed in the Avoid collision and scratches during transportation. 9.5 Steel cylinders should be stored in a place without corrosive gases, ventilated, dry, and not exposed to sunlight. 10 Product Certificate and Quality Certificate
10.1 Each steel cylinder leaving the factory should have a product certificate. The format of the certificate is shown in Appendix A (Supplement). The content recorded in the product certificate should be consistent with the production inspection records kept by the manufacturer. 10.2 Each batch of steel cylinders leaving the factory should have a quality certificate; if there is more than one user of the batch of steel cylinders, each user should have a copy of the batch inspection quality certificate, in the same format as the original. 540
Name of steel cylinder
Factory number
Factory batch number
Factory date
Manufacturing license number
GB5842—1996
Appendix A
Product certificate format
(Supplement)
x××××x× Factory
Liquefied petroleum gas steel cylinder
Product certificate
The manufacture of this product complies with GB5842-1996 and the design drawing requirements. Request, passed the inspection. Inspection Section Chief (Seal)
Note: Specifications must be unified, the core size is 150mm×100mm. Special seal for quality inspection
Filling medium
Maximum filling volume
Weight of cylinder
Measured volume (water volume)
Bottle material
Bottle design wall thickness
Pressure test pressure
Air tightness test pressure
Heat treatment method
Welder code
Inspector signature
GB 5842—19961 The hydraulic burst test shall be carried out in accordance with the provisions of GB15385, and the following data shall be measured: a.
water volume of the cylinder;
volume deformation of the cylinder under the hydraulic test pressure; internal pressure when the cylinder reaches yield;
pressure P when the cylinder ruptures. and volume deformation rate. 8.3.4.2 When conducting a hydraulic burst test, the water delivery rate of the water pump per hour is generally 1~~2 times the water volume of the cylinder. 8.3.4.3 Before conducting a hydraulic burst test, the weight of the empty cylinder shall be weighed first; after filling with water, the total weight of the cylinder and water shall be weighed, so as to calculate the water volume of the cylinder.
8.3.4.4 When conducting a hydraulic burst test, the pressure shall be increased slowly. First increase the pressure to 2.1MPa, then release the pressure, repeat several times to discharge the gas in the water; after the gas is completely discharged, increase the pressure to the pressure test pressure Ph, maintain the pressure for at least 30s, and measure the total volume deformation of the cylinder; then increase the pressure and measure, record the pressure, time and water inflow, so as to draw the pressure-time and pressure-water inflow curves, determine the pressure at which the cylinder begins to yield, until it bursts and determines the bursting pressure and total water inflow. 8.3.4.5 The measured bursting pressure value P shall not be less than the result calculated by the following formula: 2S.0p
Ph≥ D.-s
（4）
8.3.4.6 The volume deformation rate when the cylinder ruptures (the ratio of the increase in the volume of the cylinder during the burst to the water volume of the cylinder before the test) shall be greater than 10%. 8.3.4.7 If the cylinder is broken and the fragments or fractures occur at the corner weld of the valve seat, the oval part of the head, the longitudinal weld, and the girth weld (except those perpendicular to the girth weld), the test is unqualified. 8.4 Repeated test
8.4.1 If the items of each test are unqualified, the test can be carried out again after treatment or repair. If it still fails, it will be scrapped. 539
GB5842-1996
8.4.2 When conducting the test, if there is evidence that it is an operating error or a measurement error, a second test should be conducted on the same cylinder or another cylinder in the same batch of cylinders. If the second test is qualified, the first test can be ignored. 8.4.3 If the mechanical property test is unqualified, 2 cylinders in the same batch of cylinders are randomly selected for mechanical property test; 2 cylinders are subjected to water pressure burst test.
8.4.4 If the re-test still fails, the batch of cylinders shall be deemed unqualified. However, this batch of cylinders is allowed to be reheat treated or repaired and then heat treated, and retested as a new batch in accordance with the provisions of Article 8.3. 9 Marking, coating, packaging, transportation, storage 9.1 Marking
9.1.1 The arrangement and content of the markings on the cylinders shall comply with the provisions of the gas cylinder safety supervision regulations. The markings on the cylinders shall be permanent 9.1.2 The steel stamp mark shall be obvious and clear, and shall be directly stamped on the welding shield or head, or stamped on the steel stamp plate welded on the head. The steel stamp mark directly stamped on the head shall be smooth without sharp corners and shall not affect the safe use of the cylinder. The steel stamp mark shall not be replaced by a nameplate. 9.2 Coating
9.2.1 After all the inspection items of the cylinder are qualified, the surface oil, rust, scale, welding spatter and other debris shall be removed and kept dry before coating.
9.2.2 The color of the cylinder should comply with the provisions of GB7144, and the words "liquefied petroleum gas" should be written in red, with the font being 60-80mm high in Fangsong style Chinese.
9.2.3 The coating should be uniform, without defects such as bubbles, flow marks, cracks and peeling. 9.3 Packaging
9.3.1 The valve port of the cylinder should be sealed to prevent the entry of foreign objects during transportation and storage. 9.3.2 The cylinders leaving the factory should be packaged according to the requirements of the agreement signed with the user. If the user has no requirements, they shall be packaged according to the packaging regulations. 9.4 The cylinders shall be sealed in the Avoid collision and scratches during transportation. 9.5 Steel cylinders should be stored in a place without corrosive gases, ventilated, dry, and not exposed to sunlight. 10 Product Certificate and Quality Certificate
10.1 Each steel cylinder leaving the factory should have a product certificate. The format of the certificate is shown in Appendix A (Supplement). The content recorded in the product certificate should be consistent with the production inspection records kept by the manufacturer. 10.2 Each batch of steel cylinders leaving the factory should have a quality certificate; if there is more than one user of the batch of steel cylinders, each user should have a copy of the batch inspection quality certificate, in the same format as the original. 540
Name of steel cylinder
Factory number
Factory batch number
Factory date
Manufacturing license number
GB5842—1996
Appendix A
Product certificate format
(Supplement)
x××××x× Factory
Liquefied petroleum gas steel cylinder
Product certificate
The manufacture of this product complies with GB5842-1996 and the design drawing requirements. Request, passed the inspection. Inspection Section Chief (Seal)
Note: Specifications must be unified, the core size is 150mm×100mm. Special seal for quality inspection
Filling medium
Maximum filling volume
Weight of cylinder
Measured volume (water volume)
Bottle material
Bottle design wall thickness
Pressure test pressure
Air tightness test pressure
Heat treatment method
Welder code
Inspector signature
GB 5842—19961 The hydraulic burst test shall be carried out in accordance with the provisions of GB15385, and the following data shall be measured: a.
water volume of the cylinder;
volume deformation of the cylinder under the hydraulic test pressure; internal pressure when the cylinder reaches yield;
pressure P when the cylinder ruptures. and volume deformation rate. 8.3.4.2 When conducting a hydraulic burst test, the water delivery rate of the water pump per hour is generally 1~~2 times the water volume of the cylinder. 8.3.4.3 Before conducting a hydraulic burst test, the weight of the empty cylinder shall be weighed first; after filling with water, the total weight of the cylinder and water shall be weighed, so as to calculate the water volume of the cylinder.
8.3.4.4 When conducting a hydraulic burst test, the pressure shall be increased slowly. First increase the pressure to 2.1MPa, then release the pressure, repeat several times to discharge the gas in the water; after the gas is completely discharged, increase the pressure to the pressure test pressure Ph, maintain the pressure for at least 30s, and measure the total volume deformation of the cylinder; then increase the pressure and measure, record the pressure, time and water inflow, so as to draw the pressure-time and pressure-water inflow curves, determine the pressure at which the cylinder begins to yield, until it bursts and determines the bursting pressure and total water inflow. 8.3.4.5 The measured bursting pressure value P shall not be less than the result calculated by the following formula: 2S.0p
Ph≥ D.-s
（4）
8.3.4.6 The volume deformation rate when the cylinder ruptures (the ratio of the increase in the volume of the cylinder during the burst to the water volume of the cylinder before the test) shall be greater than 10%. 8.3.4.7 If the cylinder is broken and the fragments or fractures occur at the corner weld of the valve seat, the oval part of the head, the longitudinal weld, and the girth weld (except those perpendicular to the girth weld), the test is unqualified. 8.4 Repeated test
8.4.1 If the items of each test are unqualified, the test can be carried out again after treatment or repair. If it still fails, it will be scrapped. 539
GB5842-1996
8.4.2 When conducting the test, if there is evidence that it is an operating error or a measurement error, a second test should be conducted on the same cylinder or another cylinder in the same batch of cylinders. If the second test is qualified, the first test can be ignored. 8.4.3 If the mechanical property test is unqualified, 2 cylinders in the same batch of cylinders are randomly selected for mechanical property test; 2 cylinders are subjected to water pressure burst test.
8.4.4 If the re-test still fails, the batch of cylinders shall be deemed unqualified. However, this batch of cylinders is allowed to be reheat treated or repaired and then heat treated, and retested as a new batch in accordance with the provisions of Article 8.3. 9 Marking, coating, packaging, transportation, storage 9.1 Marking
9.1.1 The arrangement and content of the markings on the cylinders shall comply with the provisions of the gas cylinder safety supervision regulations. The markings on the cylinders shall be permanent 9.1.2 The steel stamp mark shall be obvious and clear, and shall be directly stamped on the welding shield or head, or stamped on the steel stamp plate welded on the head. The steel stamp mark directly stamped on the head shall be smooth without sharp corners and shall not affect the safe use of the cylinder. The steel stamp mark shall not be replaced by a nameplate. 9.2 Coating
9.2.1 After all the inspection items of the cylinder are qualified, the surface oil, rust, scale, welding spatter and other debris shall be removed and kept dry before coating.
9.2.2 The color of the cylinder should comply with the provisions of GB7144, and the words "liquefied petroleum gas" should be written in red, with the font being 60-80mm high in Fangsong style Chinese.
9.2.3 The coating should be uniform, without defects such as bubbles, flow marks, cracks and peeling. 9.3 Packaging
9.3.1 The valve port of the cylinder should be sealed to prevent the entry of foreign objects during transportation and storage. 9.3.2 The cylinders leaving the factory should be packaged according to the requirements of the agreement signed with the user. If the user has no requirements, they shall be packaged according to the packaging regulations. 9.4 The cylinders shall be sealed in the Avoid collision and scratches during transportation. 9.5 Steel cylinders should be stored in a place without corrosive gases, ventilated, dry, and not exposed to sunlight. 10 Product Certificate and Quality Certificate
10.1 Each steel cylinder leaving the factory should have a product certificate. The format of the certificate is shown in Appendix A (Supplement). The content recorded in the product certificate should be consistent with the production inspection records kept by the manufacturer. 10.2 Each batch of steel cylinders leaving the factory should have a quality certificate; if there is more than one user of the batch of steel cylinders, each user should have a copy of the batch inspection quality certificate, in the same format as the original. 540
Name of steel cylinder
Factory number
Factory batch number
Factory date
Manufacturing license number
GB5842—1996
Appendix A
Product certificate format
(Supplement)
x××××x× Factory
Liquefied petroleum gas steel cylinder
Product certificate
The manufacture of this product complies with GB5842-1996 and the design drawing requirements. Request, passed the inspection. Inspection Section Chief (Seal)
Note: Specifications must be unified, the core size is 150mm×100mm. Special seal for quality inspection
Filling medium
Maximum filling volume
Weight of cylinder
Measured volume (water volume)
Bottle material
Bottle design wall thickness
Pressure test pressure
Air tightness test pressure
Heat treatment method
Welder code
Inspector signature
GB 5842—19964 Steel cylinders should be protected from collision and scratches during transportation. 9.5 Steel cylinders should be stored in a place without corrosive gases, ventilated, dry, and not exposed to sunlight. 10 Product certificates and quality certificates
10.1 Each steel cylinder leaving the factory should have a product certificate. The format of the certificate is shown in Appendix A (Supplement). The content recorded in the product certificate should be consistent with the production inspection records kept by the manufacturer. 10.2 Each batch of steel cylinders leaving the factory should have a quality certificate; when there is more than one user of the batch of steel cylinders, each user should have a copy of the batch inspection quality certificate. The format is shown in Appendix B (Supplement). 540
Name of cylinder
Factory number
Factory batch number
Factory date
Manufacturing license number
GB5842—1996
Appendix A
Product certificate format
(Supplement)
x××××x× Factory
Liquid petroleum gas cylinder
Product certificate
The manufacture of this product complies with the requirements of GB5842-1996 and design drawings and has passed the inspection. Inspection Section Chief (Seal)
Note: The specifications must be unified, and the core size is 150mm×100mm. Special seal for quality inspection
Filling medium
Maximum filling volume
Weight of steel cylinder
Measured volume (water volume)
Bottle material
Bottle design wall thickness
Pressure test pressure
Air tightness test pressure
Heat treatment method
Welder code
Inspector’s seal
GB 5842—19964 Steel cylinders should be protected from collision and scratches during transportation. 9.5 Steel cylinders should be stored in a place without corrosive gases, ventilated, dry, and not exposed to sunlight. 10 Product certificates and quality certificates
10.1 Each steel cylinder leaving the factory should have a product certificate. The format of the certificate is shown in Appendix A (Supplement). The content recorded in the product certificate should be consistent with the production inspection records kept by the manufacturer. 10.2 Each batch of steel cylinders leaving the factory should have a quality certificate; when there is more than one user of the batch of steel cylinders, each user should have a copy of the batch inspection quality certificate. The format is shown in Appendix B (Supplement). 540
Name of cylinder
Factory number
Factory batch number
Factory date
Manufacturing license number
GB5842—1996
Appendix A
Product certificate format
(Supplement)
x××××x× Factory
Liquid petroleum gas cylinder
Product certificate
The manufacture of this product complies with the requirements of GB5842-1996 and design drawings and has passed the inspection. Inspection Section Chief (Seal)
Note: The specifications must be unified, and the core size is 150mm×100mm. Special seal for quality inspection
Filling medium
Maximum filling volume
Weight of steel cylinder
Measured volume (water volume)
Bottle material
Bottle design wall thickness
Pressure test pressure
Air tightness test pressure
Heat treatment method
Welder code
Inspector’s seal
GB 5842—1996
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.