GB/T 15558.2-2023燃气用埋地聚乙烯(PE)管道系统第2部分:管材国家标准
英文:Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 2: Pipes GB/T 15558.2-2023介绍: 国家标准《燃气用埋地聚...
英文:Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 2: Pipes GB/T 15558.2-2023介绍: 国家标准《燃气用埋地聚...