??????????
???????
BZ41??????????????????????????????????????У??÷???????????????????????????????桢????????м???????????????п???????????????????????????????????????????????????????
???????BZ41
?????????DN40~500mm
?????????PN1.0??10.0MPa
????????ZG1Cr189Ti??ZG00Cr18Ni10??ZG1Cr18Ni12MO2Ti??ZG00Cr17Ni14MO2??WCB
?????????GB12234-89
?????????GB12221-89
??????磺??JB/T79-94
???????飺??GB13927
