美利体育登录入口官网:LST EN ISO 16486-1:2020 用于供应气体燃料的塑料管道系统 具有熔接和机械连接的未增塑聚酰胺(PA-U)管道系统 第1部分:总则(ISO 16486-1:2020)
Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing - Part 1: General (ISO 16486-1:2020)