Drainage pipes and manholes for sewerage installation, stormwater drainage and underground water infrastructure. Choose the right components for reliable drainage and connection of piping systems.
DWTN offers a complete range of concrete pipes with spigot connections. This watertight connection is ensured by a rubber ring that is compressed into the socket during production. All concrete pipes are Benor-approved and bear a CE marking. We also offer our entire range of pipes under NL BSB, making our pipes suitable for both the Belgian and Dutch markets. The pipes are produced using CEM I 52.5 SR3-LA.
Our range of unreinforced, reinforced and fibre-reinforced pipes includes internal diameters from Ø300 to Ø2000 mm. We meet the minimum strength requirement of class R135. Thanks to the integrated seal, which is compressed into the concrete pipe during production, the pipes can be connected watertight very quickly and can even accommodate minor angular deviations. To make your project easier, we also offer a variety of adapter pipes and fittings.
Porous pipes
In addition to standard concrete pipes, DWTN also offers a complete range of porous concrete pipes with spigot connections. All our porous pipes meet strength class 135 and are Benor-approved and bear a CE marking. We also offer our entire range of pipes under NL BSB, making our pipes suitable for both the Belgian and Dutch markets
This type of pipe is primarily used as an infiltration pipe and has a porous structure around its entire circumference. Naturally, it complies with the PTV104 standard. It is also fitted with a machine-compressed spigot seal, allowing for quick and easy installation. Thanks to DWTN porous pipes, water infiltration, storage and transport can be managed effectively while respecting the environment.
It is often wrongly assumed that porous pipes become clogged with silt, preventing them from allowing infiltration after a few years. However, university research has shown that this is not the case and that porous pipes therefore have a long service life.
Moduloval a distinctive shape with unique properties
Thanks to its internal shape, the Moduloval has the same hydraulic properties as a round pipe. It also offers a hydraulic advantage over a rectangular profile. The Moduloval stands out from egg-shaped pipes thanks to its perfectly watertight connection.
Thanks to its external shape, the Moduloval takes up less space. The Moloval can also be installed both horizontally and vertically. This saves on excavation, backfilling and fill material. Its unique properties and joint design make it more attractive than rectangular profiles and egg-shaped pipes. Its original design allows it to perform better when ovalisation occurs.
Coffer elements
Coffer elements are the ideal solution for complex work at shallow depths. Their dimensional stability and complete watertightness make our coffer elements extremely reliable products. Did you know that DWTN coffer elements are multi-purpose? For example, they can be used to install a trench profile, a retaining wall or a passage. Our coffer elements are BENOR and NL BSB-approved. This makes them suitable for both the Belgian and Dutch markets.
DWTN offers an extensive range of coffer elements. They are sealed with a rubber seal bonded to the wedge. Our coffer elements are fitted with four ball-head anchors to make them easy to install on site. The coffer elements are designed for a working load of 100kN/m². Adapter pieces, corner pieces or start/end elements can also be produced to connect to the straight coffer. Would a discharge element or a manhole ladder suit your requirements better? We are always happy to help you with these as well.
Round concrete inspection manholes with spigot connections
DWTN can supply standard round inspection manholes in self-compacting concrete. Concrete pipes are connected using a spigot connection. Gres, plastic and cast iron pipes can also be connected without any problems. Our manholes have an improved flow profile, which prevents siltation and the accumulation of debris in wastewater (DWA) systems. Our range includes round manholes (Ø 800 to Ø2000mm). To build the inspection manhole up to ground level, we offer shaft elements, cover plates and adapter rings.
The inspection manholes are produced using CEM I 52.5 SR3-LA and are BENOR and NL BSB-approved. This makes them suitable for both the Belgian and Dutch markets. The inspection manhole is built up using matching shaft elements and cover plates.
Square manholes/sump pits
DWTN can supply standard inspection manholes in self-compacting concrete. Concrete pipes are connected using spigot connections. Gres, plastic and cast iron pipes can also be connected without any problems. Our standard range of square manholes includes sizes 80x80cm, 100x100cm, 125x125cm and 150x150cm. We can always offer any other size as a custom-made manhole (e.g. 175x175cm, 200x200cm, rectangular manholes, etc.). To build the inspection manhole up to ground level, we offer intermediate sections, cover plates and adapter rings.
The inspection manholes are produced using CEM I 52.5 SR3-LA and are BENOR and NL BSB-approved. This makes them suitable for both the Belgian and Dutch markets.
These manholes are ideal as sump pits, but naturally also as sewerage manholes when the pipes are connected at right angles. The manholes are cast monolithically, and sizes 125×125 and 150×150 can even be made as a single unit up to 3m high. Ideal for use as pump pits.
Discharge elements for bank reinforcement
Tubobel Aqua offers a choice of various discharge structures for creating an overflow in an open reservoir or retention basin. These ready-made precast elements ensure durable and attractive bank reinforcement. If desired, they can be fitted with a non-return valve and galvanised protective grating at the factory.
Depending on the required pipe connection, we offer 5 types of discharge basins for connecting concrete pipes or plastic pipes of various diameters. Each type can, in turn, be produced in 4 different slopes, namely 1:1, 2:3, 1:2 and 1:3. This allows the side wall to follow the slope or embankment.
Depending on the chosen slope, the base plate will also be adjusted accordingly. For the connection, you can choose the concrete pipe's spigot seal, a compressed PVC socket or a generous opening. The latter allows the desired pipe to be cast into the opening on site. Each type is fitted with traditional reinforcement, 4 ball-head anchors and chamfered edges on the visible sides. Furthermore, they feature a perfectly smooth finish. They are manufactured from self-compacting concrete with HSR cement and cast monolithically. Our discharge elements are BENOR and NL BSB-approved. This makes them suitable for both the Belgian and Dutch markets.
Of course, these products can always be manufactured to meet the requirements of the project by our custom-made department.
PE inspection manholes
If you are looking for a reliable solution for managing inspection points in your infrastructure, the PE inspection manhole is also a possible choice. Our PE inspection manholes are designed for use in a variety of industrial and commercial applications. Whether you are a wholesaler, contractor or property developer, a PE manhole offers the durability and flexibility you need for your projects.