Home / Standards / GB/T 707-1988 GB/T 707-1988 Abolished Hot-rolled channel steel--Dimensions,shape,weight and tolerances 热轧槽钢尺寸、外形、重量及允许偏差 Standard Type GBT ICS 77.140.70 CCS H44 Status 废止 Issue Date 1988-09-05 Implementation 1989-07-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A