WELTECH Vision Trading provides our best service for site welding as per customer’s requirement.
Butt Fusion is a welding process used to join two different pieces of a thermoplastic. Butt Fusion welding also known as heat welding or simply fusion. This technique involves heating two planed surfaces of thermoplastic material (typically polyethylene) against a heated surface. After a specified amount of time, the heating plate is removed and the two pieces are pressed together and allowed to cool under pressure, forming the desired bond. When done properly, the two pieces become indistinguishable from each other
Another method used is referred to as electrofusion. Electrofusion is a method of joining HDPE and other plas-
tic pipes with special fittings that have built-in resistive wire which is used to weld the joint together. The pipes to be joined are trimmed, cleaned, inserted into the electrofusion fitting (with a temporary clamp if required) and a voltage is applied using a device called an electrofusion processor. The processor controls how much voltage is applied, and for how long, depending on the fitting in use. As current is applied to the resistive wire, the coils heat up and melt the inside of the fitting and the outside of the pipe wall which weld together producing a very strong homogeneous joint. The assembly is then left to cool for a specified time.
WELTECH Vision Trading also provides service for HDPE drainage and PPR welding at site. HDPE Drainage pipe cannot be joint using solvent cement. However welding of HDPE gives excellent results. There are two methods of welding that is hot plate welding and electro welding using fittings with integral heating elements