阀门标准 BS EN 13959-2004 Anti-pollution check valves – —N 6 to —N 250 inclusive Family E, type A, B, C, and —.pdf [db:摘要]
阀门标准 BS EN 13953-2003 Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG).pdf [db:摘要]
阀门标准 BS EN 13942-2009 Petroleum and Natural Gas Industries – Pipeline Transportation Systems – Pipeline V.pdf [db:摘要]
