GB/T 4622.1-2009 Translated English of Chinese Standard. (GBT 4622.1-2009, GB/T4622.1-2009, GBT4622.1-2009): Classification for spiral wound gasketshttps://www.chinesestandard.net, 30. apr. 2016 - 8 sider This part of GB/T 4622 specifies the types, codes, marks and symbols of spiral wound gaskets. This part is applicable to spiral wound gaskets for pipe flanges. |