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TOP PIPE HDPE Corrugated Piping Systems provide a great solution to both new and existing infrastructure systems. These pipe are manufactured using a double-wall system and are commonly referred to as DWC pipes. The outer layer of the pipe is corrugated, which is designed to give the pipe enhanced stiffness, absorb external pressure and reduce overall weight of the pipe. The inner layer has a smooth texture, designed to maximise flow efficiency and minimise friction.

HDPE Corrugated Piping has long been the preferred piping choice in Asia, Europe and North America. They are rapidly replacing more primitive systems such as GRP (fibreglass), concrete and clay piping due to their comprehensive advantages, superior performance levels and long service life.

TOP-PIPE HDPE Corrugated Pipes are produced in accordance with the EN 13476 standards and is available in diameters from 225mm up to 600mm.

TOP PIPE produces HDPE Corrugated Pipes with the following specifications available in both plain-end or socket:

OD (mm)

Pipe Series Length (mm)
225 SN4 or SN8 6000
250 SN4 or SN8 6000
300 SN4 or SN8 6000
400 SN4 or SN8 6000
500 SN4 or SN8 6000
600 SN4 or SN8 6000

HDPE Corrugated Pipe Features

The corrugation profile allows for a more lightweight profile when compared to solid-wall pipes. These pipes are also weigh less than 10% of the weight of concrete pipes As a result, the pipes are easier and safer to handle and make field adjustments, which reduces installation cost and time.
The smooth internal surface of the pipes and the high abrasion resistance means the pipes possess optimum hydraulics. Subsequently it is possible to use a pipe 1.3x smaller in TOP-PIPE HDPE Corrugated Pipes in comparison to the same diameter of concrete pipes.
Due to their high impact resistance value, TOP-PIPE HDPE Corrugated Pipes are not borken easily. Therefore, during installation or in case of earth movements/settlements, there is low risk of damage to the pipe. As a result there is minimum service and maintenence cost for the pipeline.
Since HDPE has a high resistance to a number of chemicals, these pipes are not affected by decay, corrosion or the transfer of dangerous chemicals.
Their lightweight nature makes TOP-PIPE HDPE Corrugated pipe suitable for telescopic transport, wherein smaller diameter pipes can be inserted into larger diameter pipes.

HDPE Corrugated Pipe Applications

TOP-PIPE HDPE Corrugated Pipe applications range from serving as a primary medium for gravity flowing materials to protective barriers preventing the deformation and wreckages of vital equipment. Some of the uses for TOP-PIPE HDPE Corrugated Piping Systems include:

Storm, rain and melt-water systems
Mining and Slurry Lines
Gravity Water Mains
Wastewater Drainage
Highway Drainage
Canalisation Projects
Cable Ducts