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Flange gate valve
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Valve materials: QT450、WCB、A105、LCB、LF2、WC6、F11、WC9、F22、ZG1Cr5Mo、F5、ZG20CrMoV、ZG15Cr1Mo1V、12Cr1MoV、C12A、F91、F92、CF8、F304、CF8M、F316、CF3、F304LCF3M、F316L、CF8C、F347、F304H、 F316H、F321H、4A、F51、5A、F53、Inconel、Monel
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