Home / Standards / GB/T 35451.2-2018 GB/T 35451.2-2018 Active Polypropylene(PP) structure-wall piping systems for underground drainage and sewerage—Part 2: Polypropylene spirally enwound structure-wall pipes 埋地排水排污用聚丙烯(PP)结构壁管道系统 第2部分：聚丙烯缠绕结构壁管材 Standard Type GBT ICS 83.140.30 CCS G33 Status 现行 Issue Date 2018-12-28 Implementation 2019-07-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A