?????????
???????
J41W?????????????????????PN1.6-42.0MPa(CL150-CL2500)?????????-46??550?????????????????????????????????????????·????ж??????·?????
???????J41W
?????????DN15??400mm
?????????PN1.6~16.0MPa
??????????200?桫??350??
???????????????????????????????Щ????????
??????????????ɡ??????綯
?????????GB12235
???????GB12221
??????磺GB9113 JB79
???-????GB9131
????-???飺GB/T13927 JB/T9092
