T/GDC 330-2025 modified high-density polyethylene (HDPE-M) double-wall corrugated pipes for underground use
T/GDC 330-2025 Modified High Density Polyethylene (HDPE-M) Double Wall Corrugated Pipe for Buried Use
Basic Information
Scope
Scope: This document specifies the terms and definitions, symbols, abbreviations, materials, product classification, marking, structure, connection methods, technical requirements, test methods, inspection rules, and marking for buried modified high-density polyethylene (HDPE-M) double-wall corrugated pipes. This document is applicable to the production, manufacturing, and inspection of buried modified high-density polyethylene (HDPE-M) double-wall corrugated pipes used in drainage and sewage projects with a long-term working temperature of 45°C or lower. Main technical content: Terms and definitions, symbols, abbreviations, materials, product classification, marking, structure, connection methods, technical requirements, test methods, inspection rules, marking, transportation, and storage for buried modified high-density polyethylene (HDPE-M) double-wall corrugated pipes.