Home / Standards / GB 707-65 GB 707-65 Hot-rolled channel steel—Dimensions, shape, weight and tolerances—Replacement 热轧槽钢尺寸、外形、重量及允许偏差 代替 Standard Type GB ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A