Home / Standards / GB/T 715-1989 GB/T 715-1989 Abolished Hot-rolled round carbon steel bars for standard parts 标准件用碳素钢热轧圆钢 Standard Type GBT ICS 77.140.70 CCS H44 Status 废止 Issue Date 1989-03-31 Implementation 1990-01-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A