HDPE Drainage Pipe

Product Overview

Baishunxing Pipe Industry HDPE Drainage Pipes are non-pressure pipes manufactured from high-density polyethylene resin through extrusion processes. Depending on the structure, they are commonly categorized into double-wall corrugated pipes, hollow-wall winding pipes, and solid-wall drainage pipes. Primarily used for gravity-flow (non-pressure) drainage and sewage systems, they offer exceptional chemical resistance and structural stability.

Key Features

Superior Hydraulic Performance:The mirror-smooth inner wall has an extremely low friction coefficient (Manning’s n≈0.009n≈0.009). Compared to concrete pipes, it provides a higher flow rate for the same diameter and is resistant to scaling or clogging.

Excellent Chemical Resistance:As polyethylene is a non-polar material, it resists erosion from domestic sewage, acidic/alkaline industrial wastewater, and soil chemicals. It will not rust, rot, or corrode.

Outstanding Flexibility:Classified as a flexible pipe, it features excellent elongation at break. It can follow the terrain's curvature and effectively adapt to uneven ground settlement and seismic activity, preventing pipe fracture.

Low-Temp & Impact Resistance:The embrittlement temperature is extremely low (−70∘C−70 ∘ C), allowing it to maintain good impact resistance and prevent brittle cracking during construction in cold climates.

Major Advantages

The lightweight design (only 1/8 the weight of concrete pipes) eliminates the need for heavy lifting equipment and allows manual handling. Fast installation significantly reduces construction cycles and labor costs.

Zero-Leakage Connection:Typically joined by rubber ring sockets or heat fusion welding. The excellent sealing prevents sewage leakage from contaminating groundwater and prevents external water infiltration from affecting treatment efficiency.

Extra Long Maintenance-Free Life:Under normal buried conditions, the service life exceeds 50 years. Its wear resistance is several times that of steel pipes, greatly reducing the frequency of maintenance and replacement.

Eco-Friendly:HDPE is an eco-friendly material that is non-toxic and odorless, and it is 100% recyclable, aligning with sustainable development goals.

Typical Applications

Municipal Sewage & Stormwater:Rainwater and sewage collection and discharge systems under urban main roads.

Industrial Wastewater Treatment:Discharge of corrosive wastewater from chemical, power, and pharmaceutical plants.

Agricultural & Forestry Drainage:Farmland drainage, low-pressure irrigation, and forestry drainage projects.

Road & Large Site Drainage:Drainage for highways, railways, golf courses, and large building foundations.

Mine Ventilation & Drainage:Efficient mine ventilation and transport of sand-containing slurries.