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1. Design
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API602, ANSI B16.34, BS5352, GB/T12224, GB/T12228, GB/T12234
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2. Socket Welding End
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ANSI B1.20.1(NPT), GB/T7306-87(RC)
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ANSI B16.5, JB/T82.1″82.4-49
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6. Face to Face of Flaned Valves
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Bolted Bonnet(BB)/Welded Bonnet(WB)
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API598, GB/T13927, JB/T9092
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A105, LF2, F5, F11, F22, F304, F316, F304L,etc. and Monel, Alloy20
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