Welcome to Weholite

Asset International Limited is the world’s leading manufacturer of Weholite large diameter pipes. As Uponor Infra’s UK and Irish licensee for the global leading Weholite HDPE Structured Wall Pipe and Weholite Modular brands, Asset International Limited provides creative, innovative and best-value designs for use in the water management industry.

Weholite products are used extensively throughout this industry, both in the UK and internationally. Industry sectors include flood defences, housing, sewerage, biogas, drainage, marine solutions, venting, ecological heating and cooling and engineered SUDS.

Click on the links below – these are our five major product areas and will give you the information you need to know to understand how Weholite can be used for your project. If you scroll down you will see examples of some of the projects we have been involved in around the world.

This site will tell you all you need to know about commissioning your own bespoke solution for your project. Take your time looking around, and if you have any enquiries please contact us.

Latest News


Take a tour of the Weholite factory at our headquarters in South Wales where all of our bespoke water management solutions are manufactured.

Our projects around the globe

Weholite Modular in Cambridge

We worked with Cambridge Water Recycling Centre and produced the largest Weholite Modular tank ever built.
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Renewables in Leicester

The University of Leicester and Weholite worked together on a £42million renewables project.
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The Petron Bataan Refinery project

This cooling water intake project in the Philippines used Weholite for its super-sized intake structure.
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Weholite and Barratt Homes

Asset has worked with Barratt Homes to supply a drainage solution approved by Yorkshire Water.
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Pendennis shipyard

Pendennis shipyard builds super yachts, and they required ventilation pipes for a new extension.
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Weholite in Herne Bay

Here’s an example of a water drainage solution for a housing development in Kent.
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21 Days magazine

Issue #3

Check out the latest edition of our in-house magazine, 21 Days.

Each issue we feature a wide array of prestigious national and international projects that Weholite has been involved with.

Issue 3 explores the reasons behind winter flooding across the UK, showcases some of our landmark and award winning projects, and fills you in on all of the latest company news, from our latest appointments to some exciting award wins and charity work.

Download the issue