HG/T 2129.28-1991 Flanges for chemical equipment parts made of acid-resistant phenolic plastics HG/T2129.28-1991 Standard download decompression password: www.bzxz.net

Scope of application
Chemical Industry Standard of the People's Republic of China
Acid-resistant phenolic plastic flanges for chemical equipment parts
HG/T2129.28-91
This standard applies to flanges made of acid-resistant phenolic plastic with an allowable temperature of -30℃ to 130℃ and an allowable pressure as specified in the table below. Cited standards
HG/T2128 Technical conditions for chemical equipment, pipes and fittings made of acid-resistant phenolic plastics 3 Types and basic dimensions
Types and basic dimensions are as specified in the following figures and tables. Approved by the Ministry of Chemical Industry of the People's Republic of China on August 19, 199160
Implementation on January 1, 1992
Nominal diameter
HG/T2129.28—91
Quality inspection, packaging, storage and transportation of raw materials and products 29
Allowable pressure at room temperature
MPakgf/cm)bZxz.net
0,50 (5)
The quality inspection, packaging, storage and transportation of raw materials and products shall comply with the provisions of HG/T2128. The flange pressure test is carried out together with the pipeline.
5 Marking example
The acid-resistant phenolic plastic flange with a nominal diameter of DN=20mm has the following marking symbol: Flange DN20HG/T2129.28-91
Additional instructions:
This standard is proposed by China National Chemical Equipment Corporation and is under the jurisdiction of the National Technical Committee for Standardization of Non-metallic Chemical Equipment. This standard was drafted by Chengdu Chemical Research and Design Institute. The main drafters of this standard are He Jiabing and He Jin
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