Home / Standards / GB/T 33975-2017 GB/T 33975-2017 Active Hot-rolled spring steel wire rod for high-speed railway fastener 高速铁路扣件用弹簧钢热轧盘条 Standard Type GBT ICS 77.140.60 CCS H44 Status 现行 Issue Date 2017-07-12 Implementation 2018-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A