H B t w t f r 截面面积 每米重量 I x cm2 kg/m cm4 HK100a 96 100 5 8 12 21.2 16.7 349 HK100b 100 100 6 10 12 26 20.4 449 HK100c 120 106 12 20 12 53.2 41.8 1142 HK120a 114 120 5 8 12 25.3 19.9 606 HK120b 120 120 6.5 11 12 34 26.7 864 HK120c 140 126 12.5 21 12 66.4 52.1 2017 HK140a 133 140 5.5 8.5 12 31.4 24.7 1033 HK140b 140 140 7 12 12 43 33.7 1509 HK140c 160 146 13 22 12 80.6 63.2 3291 HK160a 152 160 6 9 1