GB/T 15558.3-2023燃气用埋地聚乙烯(PE)管道系统第3部分:管件国家标准
英文:Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 3: Fittings GB/T 15558.3-2023介绍: 国家标准《燃气用...
英文:Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 3: Fittings GB/T 15558.3-2023介绍: 国家标准《燃气用...