ISO 5752
用于法兰管道系统的金属阀门——面对面尺寸和中心到面尺寸
Metal valves for use in flanged pipe systems — Face-to-face and centre-to-face dimensions
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Metal valves for use in flanged pipe systems — Face-to-face and centre-to-face dimensions
Stopvalves for domestic water supply – Two-way valves – Oblique bonnet type PN 10; Y-type valve
Flanges for pipes, valves and fittings