Home / Standards / GB/T 6723-2008 GB/T 6723-2008 Abolished Cold forming sectional steel - Open sectional steel for general structure - Dimensions, shape, weight and permissible tolerances 通用冷弯开口型钢尺寸、外形、重量及允许偏差 Standard Type GBT ICS 77.140.70 CCS H44 Status 废止 Issue Date 2008-08-05 Implementation 2009-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A