SDS Weholite Systems For Jointing

Weholite HDPE Pipeline Jointing Systems

There are several different methods available for joining Weholite pipework and panels, the most efficient of which is selected for each specific application*. This ensures that the pipeline or panelled structure remains durable and effective despite the potential for poor ground conditions where there is the risk of excessive movement.
_{*Please contact SDS for advice on the most suitable system to fulfil your requirements.}

The primary techniques typically involve one of the following:

• Heat Extrusion Jointing
  • Carried out by SDS installation teams, this process provides an economical and fast method of delivering a continuous long length of pipeline, test-proven to be the industry’s strongest and most reliable method for joining structured wall pipes of diameters up to 3.5 metres. Pipe sections are welded together using a substantial amount of Weholite material; consequently, the tensile strength of the weld is even stronger than the yield stress of the profile, ensuring that any two sections of pipe, that are welded together, behave as one homogeneous pipeline. The welding conforms to/is in accordance with DIN DVS 2207 “Welding Thermoplastics – Extrusion Welding of Pipes, Piping Parts and Panels”.
• Standard and Extra-wide Couplings
  • Weholite standard couplings are 300mm wide which allows for greater tolerance in the cutting of the ends of the pipe as well as providing for the movement of pipes due to settlement or thermal effects. Extra-wide couplings are used principally for connecting pipes with a diameter of between 400 and 1800mm.
• Lateral Connections
  • The WRc-approved, Universal Adaptor (UA) Saddle can be used in conjunction with an extra-wide coupling as an easy-to-fit product for connecting 160mm laterals into Weholite post-installation.’
• High Performance Couplings
  • High performance couplings are popular with Water Companies, civil engineers and building contractors as they allow generous pipe angulation, expansion and contraction. They have been used on Weholite in sizes up to 3.3 metres in external diameter.
• Weholite Flat Bands
  • Manufactured from HDPE and with a design life as long as Weholite, these flexible bands are used for location purposes.