This document specifies the terms and definitions, symbols and abbreviations, materials, pipe marking and classification, pipe structure and connection methods, requirements, test methods, inspection rules, and signs of high molecular weight high-density polyethylene (HMWHDPE) hollow structural wall composite pipes , transportation and storage. This document is applicable to high molecular weight high-density polyethylene (HMWHDPE) hollow structural wall composite pipes (hereinafter referred to as "pipes") used for buried urban domestic drainage, industrial drainage, farmland drainage and other pipes with a long-term transport medium temperature below 45°C.
T/YNSX 003-2022 history
2022T/YNSX 003-2022 High molecular weight high density polyethylene (HMWHDPE) hollow structural wall composite pipe