Welcome to Naylor Denlok
For a company with its origins in clay drainage pipes and over 100 years of experience in the manufacture of clay drainage pipes and fittings, it is natural that Naylor Drainage Limited is at the forefront of product development and innovation.
With worldwide operational activities, Naylor Drainage has become the world's leading international supplier of specialist pipes for trenchless technology and many prestigious projects have been supplied both in the company's domestic (UK) market as well as many continents overseas.
Reputation for product reliability and customer service is part of the Naylor tradition.
The company's trenchless technology product - Denlok® - is a specially developed vitrified clay pipe system to meet the requirements of pipe installation by trenchless construction methods which include:-
- Microtunnelling
- Guided Auger Boring
- Pipe Bursting
- Pipe Eating
- Slip Lining
The Naylor approach to its development of products for the trenchless construction industry has resulted in new manufacturing equipment and production techniques. These progressive steps have led to reductions in specialist product costs and these savings have been passed onto the customer to enable the use of a first-class product at affordable prices.
Clay Pipe Technology
Denlok® is covered by and fully certified to EN295, the European standard for vitrifed clay pipes and fittings and pipe joints for drains and sewers.
Major advantages of Denlok® Vitrified Clay Jacking Pipes are:
- High-axial strength for jacking force assurance.
- High crushing strength for load bearing capabilities.
- Smooth wall surface with very minimal frictional resistance.
- Accurately machined pipe ends for easy load transference of jacking force.
- EPDM elastomer sealing components and particle board thrust rings factory fitted. Particle board components tested as best material for load transference.
- Wide range of diameters available.
- Worldwide international project-supply references.
- International Technical and Commercial Support.
Trenchless Technology
Until recently, city administrators and planners believed that the use of construction techniques involving surface trenching was the only option for the construction and repair of utility services. It was assumed that existing services were in good condition unless there was evidence to the contrary. In reality, gradual deterioration went unnoticed and failures occurred without warning, in many cases requiring an urgent response.
Over the last 25 years, it became apparent that little was known about existing utility services. Installation drawings, where they existed, gave little information on pipe capacity or materials used. Furthermore, the condition of the pipe linings was unknown, leakage and infiltration were unmeasured and related health issues were often not addressed.
The Need for Trenchless Technology
Water and sewerage infrastructures have represented a significant asset investment on the part of most municipal organisations and water authorities for well over 100 years. The distribution networks for utility services have been located underground in pipes that are laid, repaired or replaced by trenching from the surfce. In cities and urban areas, these distribtuion networks are located underneath roads. This often makes access difficult, particularly in areas congested with traffic and buildings.
When pipeline infrastructures are not well maintained then inefficiencies arise. For example, in water distribution systems, leakages occur and water shortages are possible. However, in sewerage systems, cracked and damaged pipes can cause wastewater seepage, leading to contamination of groundwater. These problems often give rise to related health and environmental impacts.
The oldest underground utility services are usually found close to the surface. Services installed later are most often found below or interwoven with the initial installations. Construction and repair carried out from the surface inevitably disrupts traffic, business and other services. This disruption has a negative impace on the local environment in terms of air quality, noise and other pollution, as well as on local vegetation and buildings. This in turn diminishes the quality of life for local residents.
Trenchless technologies, which minimise the requirements for surface excavation, can significantly reduce the environmental impacts of underground utility service installation, maintenance and repair. By minimising surface disruption, traffic congestion is significantly reduced.
Latest News
New Product Literature from Naylor Denlok
To get your copy of our new Denlok Product Brochure e-mail us on sales@naylor.co.uk
Naylor Denlok Recent Projects
DN800 Denlok has been supplied into Singapore from our associated company CanClay USA.
Other Naylor Denlok News
Naylor Denlok will be on display at No-Dig Brisbane in October
Did you know our Newsletter can be downloaded from the Naylor Industries Home Page? Check it out!