HG/T 2129.7-1991 Hand holes for chemical equipment parts made of acid-resistant phenolic plastics

HG/T 2129.7-1991 Hand holes for chemical equipment parts made of acid-resistant phenolic plastics HG/T2129.7-1991 Standard download decompression password: www.bzxz.net

Scope of application
Chemical Industry Standard of the People's Republic of China
HG/T2129.7-91
This standard applies to acid-resistant phenolic plastics with an allowable temperature of -30℃~130℃ and an allowable pressure less than or equal to 0.20MPa. Reference standards
HG//T2128 Technical conditions for chemical equipment, pipes and fittings made of acid-resistant phenolic plastics HG/T2129.29 Types and basic dimensions of slip-on flanges for chemical equipment parts made of acid-resistant phenolic plastics
Types and basic dimensions are shown in the figure below and the provisions of 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
Nominal true diameter DN
Loop ring
Split ring
Hand hole cover
HG/T2129.7-91
Parts list
See basic size table
See basic size table
Table 2 Basic size table
Acid-resistant phenolic plastic
Resistant phenolic plastic
①Hand hole height H, can be changed as needed, but the changed H, size should be indicated and modified Modify the quality of the hand hole, ② The bolt length is determined based on the gasket thickness of 5mm, 4 Quality inspection, packaging, storage and transportation of raw materials and products Length bzxZ.net
HG/T2129.29
HG/T2129.29
Quality, kg
The quality inspection, packaging, storage and transportation of raw materials and products shall comply with the provisions of HG/T2128. The hand hole pressure test is carried out together with the equipment,
Loop ring, split ring and gland
Loop ring, split ring and gland shall comply with the relevant provisions of HG/T2129.29, 6 Marking example
Nominal diameter D The hand hole made of acid-resistant phenolic plastic with N=150mm is marked as: hand hole DN150HG/T2129.7-91
The hand hole made of acid-resistant phenolic plastic with nominal diameter DN=150mm, H,=200mm (non-standard size) is marked as: hand hole DN150×200HG/T2129.7--91 Additional instructions:
This standard is proposed by China National Chemical Equipment Corporation. This standard is under the jurisdiction of the National Technical Committee for Standardization of Non-metallic Chemical Equipment, and this standard is drafted by the Ministry of Chemical Industry Research and Design Institute. The main drafters of this standard are He Jiabing and He Jin. 14
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