ISO 22621-5:2010 最大操作电压小于并且包括2 MPa(20 bar)的燃料气体供应用塑料管道系统.聚酰胺(PA).第5部分:系统适用性
Plastics piping systems for the supply of gaseous fuels for maximum operating pressures up to and including 2 MPa (20 bar) - Polyamide (PA) - Part 5: Fitness for purpose of the system