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CN109139944A
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A kind of novel movable flap of shut-off valve
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CN109434686A
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A kind of auxiliary mould for the positive and negative flat surface grinding of valve seat
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CN109140043A
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Active sealed valve seat
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CN109182668A
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A kind of valve seat annealing device
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CN109163106A
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A kind of check-valves with detachable movable valve seat
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CN109093423A
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A kind of hydraulic type multiple size valve seat turning clamp
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CN109175864A
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A kind of hard alloy Automation of Welding tooling of valve seat
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CN109723907A
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A kind of valve seat with diversion trench
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CN109185476A
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Corrosion-resistant oilhole valve seat
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CN109185475A
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Split type detachable valve seat
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CN109139990A
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A kind of axial flow type check valve compound seal valve seat construction
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CN109158819A
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A kind of valve seat apparatus for welding and positioning
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CN109139939A
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A kind of valve seat self-regulated section structure of flat gate valve
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CN109483479A
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A kind of brake gate door valve seat extracting tool
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