??????Y??????
???????
J565Y??????Y????????????????????????????????????????????????????????????????????????????????Y??????С?????????????????????????45???.
???????J565Y
?????????DN10~32mm
?????????,???,????
????????<425??
???????????????
????????A105, F11, F22, 20CrMoV, 15Cr1MoV
??????:???E101, JB/T3595, DL/T531
??????: E101, JB/T2766, GB/T15188.1
????????: E101, JB/T3595
???????: GB12224, JB/T3595, ASME B16.25
