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HDPE double-wall corrugated pipe features a smooth interior wall for optimal hydraulic flow characteristics and a corrugated exterior for high ring stiffness and structural integrity. This innovative dual-wall design provides excellent load-bearing capacity while reducing material usage and overall weight. Available in DN110 to DN1200, it is specifically engineered for non-pressure underground drainage, sewer networks, and highway sub-drainage applications. Compliant with GB/T 19472.1-2004 standard, the pipe offers superior impact resistance, chemical stability, and a service life exceeding 50 years in buried installations.
