The best welding techniques forreliable and safe networks

Bestoplast has a welding workshop that allows us to make the connections of special HDPE parts that cannot be obtained directly by injection in one piece. Two welding techniques are available to our customers to ensure the reliability and safety of the networks: butt welding and electro-welding with electro-weldable sleeves.

Butt welding

Butt welding is a technique for joining thermoplastics by melting the ends of two tubular elements by means of a hot plate. The assembly is carried out by performing the following operations :

Melting of the planed ends of polyethylene tubes or shaped parts by application to a heating element.
Contact welding of the molten ends after removal of the heating element.
Cooling of the completed assembly.

Butt welding requires two conditions :

The pipes must have the samediameter and the same thickness

WELDING MACHINE

The butt-welding machine shall comply with the standard
ISO 12176-1

Requires a 220 V / 380 V AC power source.
Automatically controls the welding cycle.
Allows a maximum level of traceability.

Range of machines
Type of machine	Welded diameters
Machine DN 250	∅ 250 au ∅ 90
Machine DN 315	∅ 315 au ∅ 125
Machine DN 500	∅ 500 au ∅ 250
Machine DN 630	∅ 630 au ∅ 315

Electro welding

The PE connector is equipped with an electrical winding integrated during manufacture. The voltage is applied to the terminals of the fitting, the dissipation of the electrical power by Joule effect causes a fusion of the surfaces of the two parts to be joined. An intimate mixture between the HDPE of two pipes and the fitting ensures cohesion and perfect sealing between the fitting and the pipe.

WELDING MACHINE

Requires a 220 V AC power source.
Automatically controls the welding cycle.
Allows a maximum level of traceability.

Reference standard	Range of welded diameters (mm)	Operating temperature (°C)
ISO 12176-2	du 20 au 630	-10 à +45