HG/T 20612-2009
Metallic ring joint gaskets for use with steel pipe flanges(PN designated) (English Version)

Standard No.

HG/T 20612-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

Professional Standard - Chemical Industry

Latest

HG/T 20612-2009

Replace

HG 20612-1997

Scope

This standard specifies the type, size, technical requirements and marking of metal annular gaskets for steel pipe flanges (PN series). This standard applies to metal annular gaskets for steel pipe flanges with nominal pressures PN63~PN160 specified in HG/T 20592.

HG/T 20612-2009 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 20592 Steel pipe flanges(PN designated)
• HG/T 20614 Specication for selection of steel pipe flanges,gaskets and bolting(PN designated)
• JB 4726 Carbon and low-alloy steel forgings for pressure vessels
• JB 4728 Stainless steel forgings for pressure vessels

HG/T 20612-2009 history

• 2009 HG/T 20612-2009 Metallic ring joint gaskets for use with steel pipe flanges(PN designated)
• 1997 HG 20612-1997 Metal ring gaskets for steel pipe flanges (European system)

HG/T 20612-2009 Metallic ring joint gaskets for use with steel pipe flanges(PN designated) has been changed from HG 20612-1997 Metal ring gaskets for steel pipe flanges (European system).

HG/T 20612-2009 Metallic ring joint gaskets for use with steel pipe flanges(PN designated) has been changed from HG 20612-1997 Metal ring gaskets for steel pipe flanges (European system).