HG/T 20635-2009
Specification for selection of steel pipe flanges,gaskets and bolting(Class designated) (English Version)

Standard No.

HG/T 20635-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

Professional Standard - Chemical Industry

Latest

HG/T 20635-2009

Replace

HG 20635-1997

Scope

This standard specifies the general rules for the selection of steel pipe flanges, gaskets, and fasteners (Class series) when used together. This standard applies to HG/T 20615 and HG/T 20623 steel pipe flanges, gaskets, and fasteners.

HG/T 20635-2009 Referenced Document

• HG/T 20615 Steel pipe flanges(Class designated)
• HG/T 20623 Large diameter steel pipe flanges(Class designated)
• HG/T 20627 Non-metallic flat gaskets for use with steel pipe flanges(Class designated)
• HG/T 20628 PTFE envelope gaskets for use with steel pipe flanges(Class designated)
• HG/T 20630 Metal jacketed gaskets for use with steel pipe flanges(Class designated)
• HG/T 20631 Spiral wound gaskets for use with steel pipe flanges(Class designated)
• HG/T 20632 Covered serrated metal gaskets for use with steel pipe flanges(Class designated)
• HG/T 20633 Metallic ring joint gaskets for use with steel pipe flanges(Class designated)
• HG/T 20634 Bolting for use with steel pipe flanges(Class designated)

HG/T 20635-2009 history

• 2009 HG/T 20635-2009 Specification for selection of steel pipe flanges,gaskets and bolting(Class designated)
• 1997 HG 20635-1997 Steel pipe flanges, gaskets, fasteners optional regulations (American system)

HG/T 20635-2009 Specification for selection of steel pipe flanges,gaskets and bolting(Class designated) has been changed from HG 20635-1997 Steel pipe flanges, gaskets, fasteners optional regulations (American system).

HG/T 20635-2009 Specification for selection of steel pipe flanges,gaskets and bolting(Class designated) has been changed from HG 20635-1997 Steel pipe flanges, gaskets, fasteners optional regulations (American system).