... : 8kg/m, 12kg/m, 15kg/m, 18kg/m,22kg/m, 24kg/m, 30kg/m Materail: Q235, 55Q Standard: GB11264-89 Specification: 8kg/m, 12kg/m, 15kg/m, 18kg/m,22kg/m, 24kg/m ... 79.3779.378.33 15.2 18kg/m 40 9080 10 18.06 22kg/m 50.8 93.6693.66 10.72 22 ... .3 24kg/m 51 1079210.9 24.46 30kg ...