Home / Standards / GB/T 37613-2019 GB/T 37613-2019 Active Embedded channel steel 预埋槽道型钢 Standard Type GBT ICS 77.140.70 CCS H44 Status 现行 Issue Date 2019-06-04 Implementation 2020-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A