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产品名称: External threads dire ctly pile mouth
详细介绍:
code number:JL6028
Specification:1/4"  3/8"  1/2" 5/8" 7/8" 11/8 "
                     13/8" 15/8"  21/8" 25/8"  31/8"              
 Standard:英标 EN1254         美标ANSIB16.22
                        Bs864           ASME B16.22