HG 20633-1997（编制说明）
Metal ring gaskets for steel pipe flanges (American system) (English Version)

Standard No.

HG 20633-1997（编制说明）

Language

Chinese, Available in English version

Published By

Professional Standard - Chemical Industry

Status

Be replaced 2009-07

Replace By

HG/T 20633-2009

Latest

HG/T 20633-2009