云顶集团

???????Q641F/H/Y 
?????????DN15~300mm 
?????????PN1.6~6.4Mpa 
????????-28??~300?? 
????????WCB??ZG1Cr18Ni9Ti??ZG1Cr18Ni12Mo2Ti 
????????????????????????????? 
?????????GB12237-89??API608??API 6D??JPI 7S-48??BS5351??DIN3357 
??????磺JB/T74??90(JB74??90)??GB9112??9131??HGJ44??76??SH3406??ANSI B16.5??JIS B2212??2214??NF E29-211??DIN2543 
???????GB12221-89??ANSI B16.10??JIS B2002??NF E29-305??DIN3202?? 
?????????飺JB/T 9092??API 598