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零件名称part name
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精铸球墨铸铁 casting ductile seat
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碳钢carbon steel
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不锈钢 stainless steel
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QT
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C
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P
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R
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PT
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PL
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阀体、阀盖
Body、cover
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QT400
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WCB
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CF8
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CF8M
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Cf3
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CF3M
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球体sphere
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QT400
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WCB
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CF8
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CF8M
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CF3M
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内衬材料阀座Lining material seat
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FEP(F46)、PTFE（F4)、PFA(可溶性聚四氯乙烯）po（聚烯径）PE(超高分子量聚乙烯）
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填料压盖Packing gland
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WCB
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WCB
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Cf8
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CF8M
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Cf3
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CF3
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