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HDPE double wall corrugated pipe
HDPE density polyethylene double wall corrugated pipe is a new type of light-weighed pipes, with smooth inner surface, ladder-shaped corrugated surface and an empty layer between double surfaces. With its unique wall structure design, such pipe has advantages of strong ring stiffness, light weight, high pressure resistance, good toughness, anticorrosion, anti-abrasion, convenient and low cost installation and long service life,etc.It is widely used in municipal transforming projects.constructions,agricultural and industrial drainage, agricultural water-saving irrigation, wastewater processing industry,etc.and is the best substitute of traditional concrete pipes, cast iron pipes and other material pipes.
According to different ring stiffness grades,HDPE double wall corrugated pipe falls into S1(ring stiffness≥4KN/m2)and S2(ring stiffness≥8KN/m2).Generally speaking, S1 will be selected when it’s buried with dynamic load or in 0.7~5m underground or while S2 selected when it’s buried without dynamic load or too shallow and too deep. Specifications are as below (nominal inner diameter):200mm, 225mm, 300mm, 400mm, 500mm, 600mm, 700mm ,800mm and 1000mm.
Advantages:Non-toxic: no heavy metal additives, would not be covered with dirt or contaminated by bacteriumCorrosion Resistant: resist chemical matters or electron chemical corrosionLower Installation Costs: light weight and ease of installation can reduce installation costs by as much as 50% over metal piping systemHigher Flow Capacity: smooth interior walls result in lower pressure loss and higher volume than metal pipeLongevity: more than 50 years under proper useRecycled and Environment-friendlyPhysical properties
Items | Index | Testing result | |
Ring stiffness KN/m^2 | S1 | ≥4 | 4.6 |
S2 | ≥8 | 8.9 | |
Impact resisitance | TIR≤10% | 1.3% | |
Ring flexibility | no fracture and delamination | Conformed | |
Oven test | no and drying crack | Conformed | |
Creep rate,% | ≤2 | 0.46% | |
HDPE double wall corrugated pipe