直径部件编号规格分钟断裂强度每 100′约重1/2SZ5063637商业18,360439/16SZ5663637商业21,760545/8SZ6263637商业28,260673/4SZ7563637商业39,960967/8SZ8763637商业53,7301311SZ1063637商业69,5701701-1/8SZ1163637商业82,1102161-1-4SZ1263637商业100,640266