美利体育登录入口官网:EN ISO 11363-1:2010 气瓶.气瓶与瓶阀连接用17E和25E锥螺纹.第1部分:规范[代替:CEN EN 629-1,CEN EN ISO 11116-1]
Gas cylinders - 17E and 25E taper threads for connection of valves to gas cylinders - Part 1: Specifications (Incorporating corrigenda April 2011 and January 2012)