Home / Standards / GB/T 3094-2012 GB/T 3094-2012 Active Cold drawn shaped steel tubes 冷拔异型钢管 Standard Type GBT ICS 77.140.75 CCS H48 Status 现行 Issue Date 2012-05-11 Implementation 2013-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会