HG 20631-1997
Spiral wound gaskets for steel pipe flanges (American system) (English Version)

Standard No.

HG 20631-1997

Language

Chinese, Available in English version

Release Date

1997

Published By

Professional Standard - Chemical Industry

Status

Be replaced 2009-07

Replace By

HG/T 20631-2009

Latest

HG/T 20631-2009

Scope

This standard specifies the type, size and technical requirements for spiral wound gaskets for steel pipe flanges (American system). This standard is applicable to spiral wound gaskets for steel pipe flanges with nominal pressure PN of 2.0MPa (Class 150) ~ 26.0MPa (Class 1500) specified in HG 20615.

HG 20631-1997 history

• 2009 HG/T 20631-2009 Spiral wound gaskets for use with steel pipe flanges(Class designated)
• 1997 HG 20631-1997 Spiral wound gaskets for steel pipe flanges (American system)

HG 20631-1997 Spiral wound gaskets for steel pipe flanges (American system) was changed to HG/T 20631-2009 Spiral wound gaskets for use with steel pipe flanges(Class designated).