QB/T 2468-1999 Stainless steel threaded fittings for food industry

This standard specifies the dimensions, tolerances, roughness, assembly and sanitation requirements of stainless steel pipe fittings with trapezoidal threads for use in the food industry. The bosses and bushings in this standard are specified for use with stainless steel pipes specified in QB/T 2467-99 "Stainless Steel Pipes for Food Industry". QB/T 2468-1999 Stainless Steel Threaded Fittings for Food Industry QB/T2468-1999 Standard download decompression password: www.bzxz.net

Classification number X99
Registration number 5924—1999
Light Industry Standard of the People's Republic of China
QB/T 2468—99
eq1s02853:1993
Stainless steel threaded pipe fittings for food industry
Published on December 14, 1999
State Bureau of Light Industry
Implementation on May 1, 2000
Non-standard equivalent adopts international standard 1802853:1993 Food! Industry stainless steel frequency-effect takeover 3, based on the original standard G% [2076-89 ≤ Food Industry Stainless Steel Valve Pipe and Accessories Stainless Steel End Takeover (this standard is converted to standard number Q/3923-99 [19991112 document issued by the whole line [19991112 document], before the content is completed) in terms of size, specification, material and other aspects, it is different from JS02853:1993. Please note that the original standard has been changed. The name of this standard is equivalent to the name of the standard. S02853:1, the third competitive size tolerance of the nominal size of the public case is equivalent to the ISO2853:1993 original tolerance will be used for 1S0207:1980 stainless steel standard with small decimal size size see all complete and complete effect, regardless of the most basic conditions of the international standard conversion, the unit ratio must be completely equivalent to the currency 1502R53:1993, its nominal size is: 1S02037:1992 standard nominal size.
The fourth type of stainless steel is equivalent to [302853:[993, the original standard adopts the certificate number [C9 small standard international standard request, by! The original standard adopts 0C7 steel + 18Ni12M2T, which is equivalent to the international standard 0CrNi9: the original standard adopts 0C7 steel + 18Ni12M2T, which is equivalent to the national standard 1r17Ni12Mu. The original standard is changed to 1S02853199, which has lowered the requirements of the three products. Therefore, it is necessary to revise the standard. The reference and reduction of this standard are the internal records of the standard. This standard can be put forward by the National Light Industry Standardization Bureau. The original standard is the starting unit of the Guangdong Fenghua High-tech Co., Ltd., the China Light Industry Association Hangzhou * Machinery Design and Research Co., Ltd.
This standard is established by: Shaomin, Jici Lai. From the date of implementation of this standard, the industry standard QB/T3927-991 issued by the State Bureau of Light Industry for stainless steel pipes and matching stainless steel threaded pipe presses will be abolished. rkaNhrKk
Light Industry Standard of the People's Republic of China
Stainless steel threaded pipe fittings for food industry
QB/T 2468--99
eqv1502853:1993
QB/1392399
This standard is equivalent to the international standard 1S02853:19936 Stainless steel threaded pipe fittings for food industry 1 Scope
This standard specifies the size, service life, surface roughness, assembly and stainless steel pipe fittings with end threads for food industry.
The standard is based on QB26-994 Stainless steel pipe for food industry 3 Current stainless steel pipes
2 Reference standards
The items covered by the underlined standards are the provisions of this standard through reference in this standard. All versions of this standard are valid at the time of publication. All specifications are subject to revision. Users of this standard should verify the quality of the original version.
GB/11031-95 table and its GB value! 801-79 Tolerances and fits: m hole, male belt and matching H2828-87 Batch inspection accounting selection library and sample table (suitable for continuous batch inspection cycle inspection and extraction sequence and oil list, suitable for inspection of production process stability GB2829--87
GB4807-84 Food war moving gasket (evil) Hygiene standard G3796.1--5796.4-86 Trapezoidal thread
QB/12467--99: Food: T. Industry stainless steel, etc. 3 Dimensions and tolerances
3.1 Joint type convex year see case 1)% Dimensions and tolerances shall be in accordance with the provisions of ticket 1, and the table-plate limit difference shall comply with the provisions of GB1811.
Approved by the State Bureau of Light Industry on December 14, 1999
Implemented on May 1, 2000
G, (h10)
11.1X4.59
Q8/T2468--99
Cotton-shaped snail effect
Test record A
3X15°
Table! Dimension tolerance
Deviation from
1±2c0
TYr KANKAeA-
Room stem: small
+0 131
Trapezoidal operation end
Tr22x·5c
T22x3-e
T22x3te
TrGX3-Se
TrE=X4-&c
TXd-3e
T9ex4-Be
Q8, 246899
3.2 The dimensional tolerances of the excavated type (see Figure 2) shall be as specified in Table 2. The maximum deviations in the table shall comply with the provisions of GB10
Table 2 Dimensional tolerances
t(h1c)
Q8/T 2468—99
3.3 The dynamic tolerances of the extracted type (see Figure 3) shall be as specified in Table 2. The maximum deviations in the table shall comply with the provisions of GB1801.
Highway six
Public
One sharp angle
Jin shaped screw effect
U3X45~
One profit tolerance
Tiepu style
tR 5796.1: 5?9G.1
Tr36X3%
Tr16x.38c
T52 X.18-
Tr65X4-80
T85X4-H
Tr11oX4-8t.
Tr120X4 8
0B/ The size and tolerance table 4 of 2468-88 34 steel pipe (see Figure 4) is used for the measurement and tolerance. The limit tolerance in the table shall comply with the provisions of GB180. The nominal size of the steel pipe shall be 6 184.3.X45. The limit tolerance shall be determined according to the provisions of QB/T 2468-99 6-axis steel pipe (see Figure 5). However, the maximum tolerance shall comply with GB180. Factory sample No. 2 Nominal size and metric Trapezoidal screw effect G 5796.1--5796.4 T2X3-8H T293-8H T:2×3-8 Te36X3·813 Tr4 XF-8 1:52X3-8H 1:65×4 10X48H F99×4-XH QB/T 2468 — 39
3.6 National honeycomb mother (see Figure 6) The dimensions and tolerances are in accordance with the provisions of Table 6. The limit in the table is in accordance with the provisions of GB801.
O(TTI3)
size, and tolerance
.3.46u
M(h15)
-:4 Gate
Shape source line
415 $796.E.
Tr22×3-8E[
Tr22X3-8H
TT2X X:$H
T3X3-8H
TT36X3 XH
TM6X3-8H
Tr50X38H
Tr52381
Tr65X 4 811
1r8148H
Tr×4 81
Tr110× 4- SH
T 20 × 6- 8H
QB/T 2468-90
3.? Seal (see Figure 7) size and tolerance according to the provisions of Table? 0.3×45
With support seal
Table? Dimensions and tolerances
Nominal size
Not equipped with push-to-seal
OB/T2468—95
3.8 The dimensions and tolerances of the selected parts (free Figure 8) are in accordance with the provisions of Table 8. A
Table 8 Dimensions and Tolerances
Common Dimensions
4 Material
= 3,05
AA Surface Enlargement
4.1 For the village, and the support letter, generally, the stainless steel body should be washed, and the irradiation number is 0CrN, Cri7Ni2Mo2 and ooCrt7NtiMoz
The technical requirements should meet the requirements of Taiwan 4807. 5 Surface Roughness
Good, lining, exploration and selected surface roughness and super seat etc. meet 3B103! The specified surface value should not be greater than 1.0www.bzxz.net
Hygiene requirements
48/12468-99
6.1 All surfaces of the takeover that come into contact with food materials must be cleaned either originally or manually after disassembly. Good hot parts must be disassembled, 6.2 The internal surface of the convex and bushing should be connected, and there should be no defects or miscellaneous pockets, and no sticking to the surface: 6.3 The sealing rate should adopt the processing strips of food storage science and the corresponding edible operation stock used, and should not give food a rice flavor and taste. 7.1 The expansion effect of the convex and the agent should be connected with the pipe head by the service pipe method, 7.2 Welding should be used for the four goods and you should use the welding to promote the pipe surface welding. 8 Marking and identification B.1 Convex load nominal! The nominal size of the hexagonal socket or socket is 38mm, and the markings are: 38QB/2468:99
3903/T2468-99
The nominal size of the hexagonal socket or socket is 38mm, and the markings are: 38QB/2468:99
3903/T2468-99
The nominal size of the hexagonal socket or socket is 38mm, and the markings are: 38QB/T246899
38QRT2.169--9 9
8.4 Density Tree Diagram
The seal and non-seal of the nominal size of 38mm are marked as 38QB/T246899
Density Compensation 38QB/T2468-99
8.5 Support Ring
The nominal size is 58Q8/2168-99
9 Inspection Rules
9.1 The production inspection is divided into two parts: inspection and type inspection. 9.2. Factory inspection is carried out in accordance with the provisions of GB3828. The inspection level is the same as the sample plan. 9.2.1 The requirements of Chapter 3, 56, and 7 of this standard are for acceptance. The factory can only start production after the inspection of the manufacturer's inspection department.
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