Rocla has supplied customised HDPE Lined Pipes for a water treatment plant in Meyerton. The project, which was completed in partnership with Civil Element Nkateko Group, was supplied with 1000 x 2500mm HDPE lined pipes manufactured to the client’s required specifications.
“The advantages of Rocla’s HDPE lined pipes is that they offer both the benefits of a conventional concrete pipe as well as a plastic pipe. The pipe is a rigid pipe that loses no shape under load and is inert to acid attack. The pipe joints deliver a degree of flexibility making them well suited for the water treatment plant project”’ said Sifiso Manqele, Rocla Sales Manager for Gauteng.
HDPE lined precast pipes do not rust, rot, corrode or leak, and are the preferred solution to transport water, chemicals, and sewage. Their resistance to acids, bases, salts, dissolved solids and brine enables the HDPE lined pipe to offer lifespans of up to 100 years under normal conditions. This longevity makes the HDPE lined piping a very cost efficient and reliable solution for critical sectors of infrastructural maintenance.
Rocla concrete HDPE lined pipes have been selected for sewer and waste water projects throughout South Africa and were supplied recently to the Driftsands Collective Sewer Augmentation in Nelson Mandela Bay in order to increase its capacity.
Some of the benefits of the Rocla HDPE lined pipes include a surface that is smoother than concrete, and therefore a pipe with a smaller internal diameter can be used - alternatively, the same diameter can be used at a flatter gradient.
An HDPE capping strip is welded over the joint of the pipes after installation. The capping strip is generally 200mm wide and the same thickness as the lining used in the pipe. One 100mm long section of lining at the invert or at 60° either side of the pipe invert should not be welded so that any ground water that may gradually accumulate over time in the space behind the lining is relieved.
“It is one of Rocla’s strengths, that it has the flexibility and adaptability to design and manufacture to meet customer needs, as evidenced by the project contractor specifying Rocla bespoke HDPE lined pipes for this project in Meyerton. Quite a feather in our cap “concluded Manqele.
Rocla is a member of the Concrete Manufacturers Association of South Africa.
