直径部件编号规格分钟断裂强度每 100′约重5/32GC156777商业1,7503.363/16GC188777商业2,8005.821/4GC250777商业4,0009.235/16GC313777商业6,00013.063/8GC375777商业10,00021.461/2GC500777商业16,00034.43