?綯???????????
???????
???????????????????÷??????????????????????????ANSI CLass1500-3500???????????-29??570???????????????????????????????·????ж??????????????????????????????????????????У????????????????綯???
???????Z961Y
?????????NPS2"~22"
?????????Class1500~3500Lb
????????????????????????綯
????????????????????
???????????ASME B16.34 E101
??????????ASME B16.34 E101
?????????磺JB/T 3595-93??ASME B16.25
??????????ASME B16.34 E101
???????????API598 E101
??????????31011402021123??
??????????31011402021123??
