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通用阀门 标志
General purpose industral valves—Marking
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蒸汽疏水阀 分类
Automatic steam traps.Classification
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通用阀门 铜合金铸件技术条件
General purpose industrial valves--Specification of copper alloy castings
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小便冲洗阀
Urinal valves
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城镇给水用铁制阀门通用技术要求
General specifications of ductile iron valves for water supply
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石油化工阀门检验与管理规程
Specification for valves inspection and management in petrochemical industry
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进出口阀门检验规程 通用要求
Rules for the inspection of valve for import and export-General requirements
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