Home / Standards / GB/T 28883-2012 GB/T 28883-2012 Active Composite seamless steel tubes for pressure 承压用复合无缝钢管 Standard Type GBT ICS 77.140.75 CCS H48 Status 现行 Issue Date 2012-11-05 Implementation 2013-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A