liuxilin1215 发表于 2014-1-1 08:04:54

IEC 60534-3-1976

IEC 60534-3-1976 Industrial-process control valves. Part 3 : Dimensions. Section One: Face-to-face dimensions for flanged, two-way, globe-type control valves


admin 发表于 2014-1-2 18:36:41

谢谢您的分享，金币已奖励！
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