HG/T 20631-2009: Spiral wound gaskets for use with steel pipe flanges (Class designated)

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Scope

This standard specifies the type, dimension, technical requirements and marking of
spiral-wound gasket for use with steel pipe flanges (Class designated).
This standard is applicable to the spiral wound gaskets for use with steel pipe flanges
whose nominal pressures are from C1assl50 (PN20)-C1ass600 (PN110) which are specified
in HG/T 20615 and HG/T 20623.

Basic Data

Standard ID	HG/T 20631-2009 (HG/T20631-2009)
Description (Translated English)	Spiral wound gaskets for use with steel pipe flanges (Class designated)
Sector / Industry	Chemical Industry Standard (Recommended)
Classification of Chinese Standard	J15
Classification of International Standard	23.040.60
Word Count Estimation	16,121
Date of Issue	2009-02-05
Date of Implementation	2009-07-01
Older Standard (superseded by this standard)	HG 20631-1997
Quoted Standard	GB/T 912; GB/T 3280; GB/T 4237; GB/T 11253; HG/T 20615; HG/T 20623; HG/T 20635; JB/T 7758.2; JC/T 69; QB/T 3628
Regulation (derived from)	Engineering [ 2009 ] No. 27
Issuing agency(ies)	Ministry of Industry and Information Technology
Summary	This standard specifies the steel pipe flanges (Class Series) with spiral wound gasket of the type, size, technical requirements, marking and signs. This standard applies to HG/T 20615, HG/T 20623 specified nominal pressure Class150 (PN20) ~ Class2500 (PN420) steel pipe flanges with spiral wound gasket.