一吋的钢丝绳破断拉力是多少?。破断拉力要根据钢丝绳公称抗拉强度(Mpa)。钢丝绳公称抗拉强度分为1470,1570,1670,1770,1870Mpa,钢丝绳最小破断拉力:1.1470,纤维芯钢丝绳439.00KN,钢芯钢丝绳474.00KN2.1570, 469.00 507.003.1670, 498.00 539.004.1770, 528.00 571.005.1870, 558.00 604.00 钢丝绳最小破断拉力和钢丝绳破断拉力总和:钢丝绳最小破断拉力:Fo=K