UNI EN ISO 15494:2021 工业用塑料管道系统 聚丁烯(PB)、聚乙烯(PE)、耐高温聚乙烯(PE-RT)、交联聚乙烯(PE-X)、聚丙烯(PP) 部件规格的米制系列
Plastics piping systems for industrial applications - Polybutene (PB), polyethylene (PE), polyethylene of raised temperature resistance (PE-RT), crosslinked polyethylene (PE-X), polypropylene (PP) - Metric series for specifications for components and the