Electro Fusion Welding

Introduction

T J Hayes and Son specialise in Electro fusion Welding

Using the very latest equipment T J Hayes & Son provides a UK nationwide specialist contracting service in Electro fusion jointing of polyethylene (PE) pipe

Process

Electro fusion welding is the name given to resistive implant welding of thermoplastic pipes. This comprises of one of two main techniques used for the joining of polyethylene water pipes, this being one of the most reliable methods of joining plastic pipe that may be used under considerable pressures.

The electro fusion welding process involves the use of a moulded socket fitting containing an electrical resistive heating coil. The prepared pipe ends are inserted into the sockets and clamped. An electric current is then passed through the coil for a pre-set time. Heating of the surrounding polymer and heat transfer to the pipe wall takes place. Cold zones at the ends of the fitting contain the melt in the central section, allowing a high melt pressure to develop and the formation of a homogeneous joint.

Example of Poly pipe electro fusion:

Poly Pipe Electro Fusion example

T J Hayes and Son Ltd provide Electro Fusion from 63mmØ up to 800mmØ if requested larger, diameter is required.

Electro Fusion Jointing

All the Benefits of Polyethylene:

		Long life (50 year design life - life expectancy in excess of 100 years)
		Ease of installation
		Minimum maintenance requirements
		Flexible and lightweight with a tolerance to ground movement
		Completely resistant to corrosion
		A welded pipeline system that is fully load bearing, without any need for anchor blocks

Butt Fusion

Butt-fusion jointing is a thermofusion process which involving the simultaneous heating of the ends of two components which are to be joined until a melt state is attained on each contact surface. The two surfaces are then brought together under controlled pressure for a specific cooling time and homogeneous fusion is formed upon cooling. The resultant joint is resistant to end thrust and has comparable performance under pressure to the pipe.

These checks are traceable with data analysed and confirmed at the end of each day supported with a report if requested to our clients, either printed out or data transferred via CD \ DVD \ USB or email. ( Note all security measures are taken and data is encrypted whilst in transfer).

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