This document specifies the terms and definitions, symbols and abbreviations, materials, pipe marking and classification, pipe structure and connection methods, technical requirements, test methods, and inspection rules for high molecular weight high-density polyethylene (HMWHDPE) hollow winding structural wall composite pipes. , marking, transportation and storage. This document is applicable to high molecular weight high density polyethylene (HMWHDPE) hollow winding 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 40°C.
T/YNSX 3-2020 history
2020T/YNSX 3-2020 High molecular weight high density polyethylene (HMWHDPE) hollow winding structure wall composite pipe