直径部件编号规格分钟断裂强度每 100′约重7/16SZ4362506商业15,90035.61/2SZ5062506商业19,30045.89/16SZ5662506商业24,300595/8SZ6262506商业29,80071.53/4SZ7562506商业42,00092.27/8SZ8762506商业58,0001431SZ1062506商业80,0001871-1/8SZ1162506商业90,4402401-1-4SZ1262506商业110,000290