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GB/T599-1996船用外螺纹青铜泄放旋塞阀
GB/T599-1996船用外螺纹青铜泄放旋塞阀 Marine bronze male thread draw-of...
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GB/T598-1980船用外螺纹青铜填料旋塞阀
GB/T598-1980船用外螺纹青铜填料旋塞阀 Marine bronze male thread packed ...
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船用法兰青铜填料直通型旋塞阀
GB/T593-1993船用法兰青铜填料旋塞阀 Marine bronze flanged packed cocks ...
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船用铸钢吸入通海阀
GB/T2029-1980船用铸钢吸入通海阀 Marine cast steel suction sea valves ...
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船用法兰铸铁填料直通型旋塞阀
GB/T593-1993船用法兰铸铁填料旋塞阀 Marine cast Iron flanged packed coc...
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船用法兰铸铁填料三通旋塞阀
GB/T593-1993船用法兰铸铁填料旋塞阀 Marine cast Iron flanged packed coc...
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船用法兰青铜填料三通旋塞阀
GB/T593-1993船用法兰青铜填料旋塞阀 Marine bronze flanged packed cocks ...
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船用青铜吸入通海阀
GB/T2030-1980船用青铜吸入通海阀 Marine bronze suction sea valves 性能...
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