NF M50-001-1-2009 燃气设施.用于工业和非工业安装的作业压力大于0.5 bar 的燃气安装管道工程.第1部分:设计、材料、建筑和检验测试的详细功能需求
Gas Infrastructure - Gas installation pipework with an operating pressure greater than 0,5 bar for industrial installations and greater than 5 bar for industrial and non-industrial installations - Part 1 : detailed functional requirements for design, mate