Home / Standards / GB/T 4622.1-2003 GB/T 4622.1-2003 Abolished Specification and symbol of spiral wound gaskets 缠绕式垫片 分类 Standard Type GBT ICS 23.040.80 CCS Q24 Status 废止 Issue Date 2003-04-15 Implementation 2003-12-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会