T/GDC 237-2025 Ultra-high molecular weight multilayer compounded polyolefin composite pipe

Scope

Scope: This document specifies the terms and definitions, symbols, classification and marking, structure and materials, specifications, requirements, test methods, inspection rules, marking, transportation and storage of ultra-high molecular multilayer anti-pressure polyolefin composite pipes (hereinafter referred to as composite pipes). This document's Type A composite pipes are suitable for urban water supply, building water supply, fire water supply, and the transportation of special fluids (industrial wastewater, corrosive gases, slurry, solid powders, coal mine water supply, coal mine gas, etc.), as well as the transportation of oil, natural gas, and oil and gas wastewater. Urban gas can also be used as a reference. This document's Type B composite pipes are suitable for urban water supply and drainage, the transportation of fluids such as hot water and heating water below 40°C, and industrial pipes can also be selected. They can be used overhead. This document's Type C composite pipes are suitable for the transportation of fluids with high wear rates in mining and chemical industries. This document's Type D composite pipes are suitable for the transportation of high-pressure fluids in the oil and chemical industries. Main technical content: Terms and definitions, symbols, classification and marking, structure and materials, specifications, requirements, test methods, inspection rules, marking, transportation and storage of ultra-high molecular multilayer anti-pressure polyolefin composite pipes (hereinafter referred to as composite pipes).

Development Information

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