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Electrofusion- The favored welding method


The electrofusion welding system is the welding procedure of pipes and fittings of the same diameter, and is executed by fusion of the contact surface through an electrical resistance inserted within the electrofusion fittings.

Today, it is considered the most developed and safe technique for realizing welding of the polyolefin. Due to its versatility, electrofusion can weld together pipes and fittings with various densities and made with various PVDF and PO materials.

Most of the Control Box complies with precise necessities of electrofusion technology for water, gas telecommunications and industrial applications.

Features and advantages regarding electrofusion comprise:

  • Portable design for restricted prices, where access is restricted and working at heights.
  • One device covering complete range of up to 1200 mm.
  •  Detailed product range
  • Barcoding system with on board memory of up to 970 welds and completes traceability.
  • Data transfer by USB.
  • Equipment locally calibrated and serviced.


Welding and spigot fittings in an overlapping format whereby the fittings and pipes are joined together by an electrofusion coupling. The resistance coil incorporated into the electrofusion coupling is heated by an electoral welding unit, which causes the surface of the component and the inner coupling instantly, along with the heating coil to be plasticized. The thermal expansion of the plastic creates the welding pressure so the impact of these two parameters, pressure and heat, result in a homogeneous connection between fitting or pipe and coupling at the end of the welding procedure.

The pipes utilized for transmitting gas and liquid in installation technology are needed to be durable. Metal and plastic transmission lines are utilized extensively in water and gas transmission lines. However, with the invention of polyethylene materials in 1933, thermoplastic materials started replacing these metal and plastic transmission lines. In the contemporary technology, pipes made from polyethylene are utilized extensively in fields like transmission and deployment of natural gas, drinking and potable water networks, waste and sewage systems, agricultural irrigation, temporary water deployment projects, drainage projects, sports ground irrigation, fire fighting system, telecommunication cabling systems, fishery and maritime, hazardous waste transmission, power plants, marinas, cement industry, petrochemical industry and chemical industry.

Installation technology is one of the most vital fields in which PE is utilized. The features making transmission lines made from PE benefits are impermeability, physical life, controlled and simple welding procedure, chemical resistance, wearing, fatigue, seismic resistance, flexibility, durability, simple production, thermal resistance and hydraulic effectiveness. Electrofusion fittings manufactured from PE material are also utilized to join the PE transmission lines.

When the voltage determined by the manufacturer is implemented to the fitting for a time span determined by the manufacturer. PE material in the inner surface melts and fills the gaps. After the cooling period is determined by the manufacturing company, the welding process is then completed.

About The Author:-

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Keywords

Electrofusion fittings , spigot fittings , electrofusion

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