HG/T 20633-2009
Metallic ring joint gaskets for use with steel pipe flanges(Class designated) (English Version)

Standard No.

HG/T 20633-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

Professional Standard - Chemical Industry

Latest

HG/T 20633-2009

Replace

HG 20633-1997

Scope

This standard specifies the type, size, technical requirements and marking of metal annular gaskets for steel pipe flanges (Class series). This standard applies to metal annular gaskets for steel pipe flanges with nominal pressures Class 150 (PN20) and Class 2500 (PN420) specified in HG/T 20615 and HG/T 20623.

HG/T 20633-2009 Referenced Document

• GB/T 1220 Stainless steel bars
• GB/T 222 Permissible tolerances for chemical composition of steel products
• GB/T 6060.2 Roughness comparison specimens - Ground, turned, bored, milled, shaped and planed
• GB/T 6983 Magnetic iron*， 2022-10-14 Update
• GB/T 699 Quality carbon structure steels*， 2015-12-10 Update
• HG/T 20615 Steel pipe flanges(Class designated)
• HG/T 20623 Large diameter steel pipe flanges(Class designated)
• HG/T 20635 Specification for selection of steel pipe flanges,gaskets and bolting(Class designated)
• JB 4726 Carbon and low-alloy steel forgings for pressure vessels
• JB 4728 Stainless steel forgings for pressure vessels

HG/T 20633-2009 history

• 2009 HG/T 20633-2009 Metallic ring joint gaskets for use with steel pipe flanges(Class designated)
• 1997 HG 20633-1997 Metal ring gaskets for steel pipe flanges (American system)

HG/T 20633-2009 Metallic ring joint gaskets for use with steel pipe flanges(Class designated) has been changed from HG 20633-1997 Metal ring gaskets for steel pipe flanges (American system).

HG/T 20633-2009 Metallic ring joint gaskets for use with steel pipe flanges(Class designated) has been changed from HG 20633-1997 Metal ring gaskets for steel pipe flanges (American system).