ISO 14531-3:2006
塑料管道和配件.气体燃料运输用交联聚乙烯管道系统.米制系列.规范.第3部分:机械连接用配件(包括PE-X/金属转换)
Plastics pipes and fittings - Crosslinked polyethylene (PE-X) pipe systems for the conveyance of gaseous fuels - Metric series - Specifications - Part 3: Fittings for mechanical jointing (including PE-X/metal transitions)