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铸钢，青铜，铸铁和合金阀门。
Cast Steel, Bronze, Iron and Alloy Valves.
youdao
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合金铸铁阀门配置编织tfe填料和合成纤维垫圈。
Alloy Iron Valves are furnished with TFE Braided packing and Synthetic Fibre gaskets.
youdao
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合金铸铁阀门配置编织tfe填料和合成纤维垫圈。
Alloy Iron Valves are furnished with TFE Braided packing and Synthetic Fibre gaskets.
youdao