???????????????
???????
5??PTFE???????????????????????????ò?????????????á?????????
???????X363F
?????????NPS1/2"~56"
?????Χ??Class150~2500Lb
????????-29?桫+429??
????????HT250??WCB??A126CI??A216WCB??A352LCB?? CF8??CF8M??CF3??CF3M
???????????????綯?????????
???????API 599/API 6D
???????ANSI B 16.10??DIN 3202
??????磺ANSI B16.5??ANSI B 16.11??ANSI 16.25
??????飺API598