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10CrMO910??304??304L??316??316L??321??P11??P22??P91??T91??

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?????????GB/T8162-2008?????????????GB/T8163-2008?????????ˉ??GB3087-2008???????ˉ??GB5310-1995????????ù?GB6479-2000??????????GB9948-2006????ξ????????GB3639-2008????????????????GB5213-85?????ò?????GB/T14975-2002???????ò?????GB/T14976-2002???????GB/T3091-2008??GB/T9711-2008???????????ASTM???±??????DIN??????????JIS??????????д?????????????????????????????????????????????????????????????????????????????????顣

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??????????1/2??-28??,21.3-711.2mm?????SCH30??SCH40??STD??XS??SCH80??SCH160??XXS etc. ?????????????б??????????????????????????????????????????