T/GDC 12-2026 Polyethylene/polypropylene three wall Compound reinforced pipes for non-pressure underground usage

Scope

This document specifies the terms and definitions, symbols, abbreviations, classification, materials, pipe structure and connection methods, technical requirements, test methods, inspection rules and markings, transportation, and storage for unpressurized PE/PP three-layer wall composite reinforced pipes used in underground applications. This document is applicable to pipes used for long-term drainage and sewage discharge in unpressurized municipal underground applications, external drainage of buildings, and agricultural irrigation, as well as for unpressurized industrial drainage and sewage pipelines. The raw materials, recycled materials, elastic sealing rings, product grading and marking, pipe structure and connection methods, color, appearance, specification dimensions, pipe length, dimensions, physical and mechanical performance requirements, and sealing performance during pipe connection of unpressurized PE/PP three-layer wall composite reinforced pipes are also covered in this document.

Development Information

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