Home / Standards / GB/T 6728-2002 GB/T 6728-2002 Abolished Cold formed steel hollow sections for general structure--Dimensions,shapes,weight and permissible deviations 结构用冷弯空心型钢 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 2002-07-15 Implementation 2002-12-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A