Home / Standards / GB/T 3422-2008 GB/T 3422-2008 Active Cast-iron pressure pipe made by continuous casting process 连续铸铁管 Standard Type GBT ICS 77.140.75 CCS H48 Status 现行 Issue Date 2008-09-11 Implementation 2009-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会