Download or read book HG/T 20632-2009 Translated English of Chinese Standard. (HGT 20632-2009, HG/T20632-2009, HGT20632-2009) written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2017-03-06 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the type, dimension, technical requirements, marking and sign of combined covered serrated gasket for use with steel pipe flanges (Class designated). This standard is applicable to the covered serrated metal gaskets for use with steel pipe flanges whose nominal pressures are from C1assl50 (PN20)-C1ass2500 (PN420) which are specified in HG/T 20615 and HG/T 20623.