GB/T 15558.1-2023燃气用埋地聚乙烯(PE)管道系统第1部分:总则国家标准
英文:Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 1:General GB/T 15558.1-2023介绍: 国家标准《燃气用埋地...
英文:Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 1:General GB/T 15558.1-2023介绍: 国家标准《燃气用埋地...