T/SCSX 0301-2022 Group standard for FRPO composite reinforced hollow woven pipes for underground drainage

Scope

Main technical content: When underground drainage pipes are used, they are subject to certain external pressure loads and are deeply buried underground, affected by geological and soil environmental factors. Therefore, the key requirements for pipe design are to achieve low-carbon environmental protection while ensuring ring stiffness, ring flexibility, impact performance, anti-aging performance, and corrosion resistance. FRPO composite reinforced hollow-wound pipes, as a product with unique production processes, are made by blending and modifying polyolefins with high-molecular materials such as polypropylene, nano-materials, and impact modifiers, and then extruding them into rectangular pipes through winding molding. The inner and outer walls of the pipes are smooth and flat. On the inner wall of the pipe, a modified polyolefin abrasion-resistant material is added to enhance the pipe's abrasion resistance and corrosion resistance, prolonging its service life. The outer wall is reinforced with a secondary polypropylene composite winding, greatly improving the pipe's compression, bending, tensile strength, internal pressure resistance, and winding joint strength. This standard specifies the terms and definitions, symbols, materials, pipe classification and marking, structural types and connection methods, requirements, test methods, inspection rules and marking, transportation and storage for FRPO composite reinforced hollow-wound pipes (hereinafter referred to as pipes). This standard applies to hollow-wound pipes with modified polypropylene extrusion molding for the inner wall and modified polyolefin abrasion-resistant material for the inner wall, and secondary polypropylene composite winding for the outer wall. The pipes specified in this standard are suitable for long-term conveying media with temperatures below 45°C in non-pressurized or low-pressure (0.4MPa) underground urban drainage, industrial drainage, and agricultural drainage projects.

Development Information

Related Standards