Home / Standards / GB/T 31929-2015 GB/T 31929-2015 Active Welded stainless steel pipes for ship 船舶用不锈钢焊接钢管 Standard Type GBT ICS 77.140.75 CCS H48 Status 现行 Issue Date 2015-09-11 Implementation 2016-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会