美利体育登录入口官网:DS/EN ISO 15494:2003 工业用塑料管道系统 聚丁烯(PB)、聚乙烯(PE)和聚丙烯(PP) 组件和系统规范 公制系列
Plastics piping systems for industrial applications - Polybutene (PB), polyethylene (PE) and polypropylene (PP) - Specifications for components and the system - Metric series