This document specifies the terms and definitions, symbols and abbreviations, materials, markings and classifications, pipe structure and connection methods, technical requirements, and test methods for large-diameter high molecular weight high-density polyethylene (HMWHDPE) hollow plastic steel composite winding structural wall drainage pipes , testing rules, marking, transportation and storage. This document is applicable to large-diameter high molecular weight high-density polyethylene (HMWHDPE) hollow plastic steel composite winding structure wall drainage pipes (hereinafter referred to as "pipes") for buried urban domestic drainage, industrial drainage and farmland drainage with a long-term transmission medium temperature below 45°C. ).
T/YNSX 007-2022 history
2022T/YNSX 007-2022 Large diameter high molecular weight high density polyethylene (HMWHDPE) hollow plastic steel composite winding structural wall drainage pipe