Home / Standards / GB/T 6725-2017 GB/T 6725-2017 Active General requirements of cold forming steel sections 冷弯型钢通用技术要求 Standard Type GBT ICS 77.140.70 CCS H44 Status 现行 Issue Date 2017-05-31 Implementation 2017-12-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会