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法兰和对夹连接钢制衬氟塑料蝶阀
Liner fluoroplatics for flanged and wafer steel butterfly valve
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石化工业用压力释放阀的尺寸确定、选型和安装 第1部分：尺寸的确定和选型
Sizing,selection and installation of pressure relieving valves for petrochemical industries-Part 1:Sizing and selection
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石化工业用钢制压力释放阀
Steel pressure relief valves for petrochemical industries
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低温阀门 技术条件
Cryogenic valve technical specifications
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普通型阀门电动装置技术条件
Technical specifications of basic version electric valve actuators
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隔爆型阀门电动装置技术条件
Technical specifications of explosion-proof version electric valve actuators
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石化工业用压力释放阀的尺寸确定、选型和安装 第2部分：安装
Sizing, selection and installation of pressure relieving valves for petrochemical industries-Part 2 : Installation
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低温介质用紧急切断阀
Cryogenic emergency shutoff valve
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眼镜阀
Glasses valve
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