T/GDC 19-2025 Double-high-rib reinforced polyethylene (HDPE) winding pipes for underground usage
T/GDC 19-2025 Double-high-rib reinforced polyethylene (HDPE) winding pipes for underground usage
Basic Information
Scope
This document specifies the terms and definitions, symbols, abbreviations, raw materials, pipe grading and marking, pipe structure types and connection methods, technical requirements, test methods, inspection rules and markings, transportation and storage for double-high reinforcement polyethylene (HDPE) wrapped pipes used in underground applications. The pipes specified in this document are suitable for underground water supply, sewage, irrigation, and other projects with a working pressure of less than or equal to 1.6 MPa and a transmission medium temperature below 45°C. Raw materials, pipe grading and marking, pipe structure types, connection methods, technical requirements, color, appearance, length, physical and mechanical properties, and system applicability.