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[正版] GB/T 12235-2007石油、石化及相关工业用钢制截止阀和升降式止回中国标准出版社

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[正版]GB/T 12235-2007 石油、石化及相关工业用钢制截止阀和升降式止回阀

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百里才法兰闸阀 DN200个 DN200

法兰闸阀 闸阀铸铁

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百里才法兰闸阀 DN50 个 DN50

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百里才法兰闸阀 DN40 个 DN40

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允诚铸钢截止阀 DN20 PN25 个

1 2 3

1条评价 好评率100%

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全自动水位控制阀浮球阀进水阀开关水塔水箱不锈钢阀控制器4分 6分内装

自动停止 无需用电 自动补满

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智铮朗月法兰电磁阀 DN200 个

1 2 3

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锦荣翔上水栓排水阀DN25 个

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400+条评价 好评率100%

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锦荣翔上水栓排水阀DN25(个)

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