HG/T 2145.1-1991 Glass-lined handholes, flat cover handholes

HG/T 2145.1-1991 Glass-lined handhole Flat cover handhole HG/T2145.1-1991 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
Glass Handhole
! Subject Content and Scope of Application
Handhole Cover
HG / T 2145. 1 - 91
This standard specifies the type, basic technical parameters and dimensions, technical requirements, etc. of handholes for glass-carrying equipment. This standard is applicable to glass-carrying flat handholes with a nominal pressure of less than or equal to 1.0Pa and a pressure of less than or equal to 1200.
2 Reference standards
GB97.1. Flat ring
GI5780 Hexagon head bolts Grade C
GH 5782 Hexagon head bolts Grade A and Grade B
GB 61701 Hexagon screws Grade A and Grade B
ZB G 94004 Technical conditions for glass equipment: HG/T2105 Glass equipment slip-on flange IIG/T2143 Glass equipment pipe mouth
3. Type, basic parameters and dimensions
3.1 Type, basic parameters and dimensions are shown in Figure 1 and Table 1 and Table 2. Approved by the Ministry of Chemical Industry of the People's Republic of China on August 19, 1991 and implemented on January 1, 1992
GB5782
GB6170
HG /T 2105
HG/ T 2050
HG / T 2045. 1 -- 91
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Hua pad drawing
Suitable for Farong
KTH 350-10 or ZG 270- 500
Soft material
Q235-A
See size table
Tang glass
Nominal pressure PN
3.2 Marking example
Nominal diameter
HG / T 2045. 1 91
Table 2, size table
Tang glass flat cover hand hole, nominal pressure PN is 1.0MPa, nominal diameter DN is 100mm. Marking: flat cover hand hole PN 1.0 DN 100 IIG /T 2145.1—-914 Technical requirements
4.1 The cover shall be selected, manufactured, tested and accepted in accordance with ZBG94004 and this standard. mm
Reference heavy wall
4. The allowable deviation of the chord length of two bolt holes and the diameter of the center circle of the bolt holes is ±0.6mm, and the deviation of the chord length of any two bolt holes shall not exceed ±1mm.
4.3 After the flat cover holes are assembled, their water positive test or air tightness test shall be carried out at the same time as the glass equipment where they are located. 4.4 The gasket shall comply with relevant standards, and the specific materials shall comply with the technical requirements of the general drawing of the glass equipment where they are located. S, packaging, transportation and storage
5.1 The outer glass surface of the fin pond shall be firmly wrapped with soft objects, and the packaging shall be firmly fixed. 5.2 Collision must be prohibited during moving and transportation, and the packaging box shall not be inverted. 5.3 The product should be accompanied by a packing list, product certificate and product instructions. 5.4 The product should be stored indoors. Open-air storage or stacking is not allowed. Additional notes:
This standard is proposed by China National Chemical Equipment Corporation. This standard is under the jurisdiction of the National Glass Equipment Standardization Technical Committee. This standard was drafted by the Shanghai Pharmaceutical Design Institute of the State Drug Administration. The main drafters of this standard are Hua Qiuyuan, Li Yijun and Bao Aiyuan.
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