Home / Standards / GB/T 6478-2015 GB/T 6478-2015 Active Steels for cold heading and cold extruding 冷镦和冷挤压用钢 Standard Type GBT ICS 77.140.10 CCS H44 Status 现行 Issue Date 2015-09-11 Implementation 2016-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A