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?????????DN20-DN300mm
?????????ANSI150??300??600LB JIS10??16??20??30??40K PN1.6??2.5??4.0??6.4MPa
??????????????FF??RF??RJ??LG
?????????ANSI B16.5??JIS B2201 JB/T79.1 PN1.6MPa,JB/T79.2
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?????GB12224-89
??????????PN16??桢PN40??PN63??PN100?????
?? ???WCB??WCC??WC6??304??316??304L??316L
????????????-20?桫+200?棩 ???????-60?桫-196?棩 ??????-40?桫450?棩
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