HDPE Butt Welding is a welding process used to join two different pieces of a thermoplastic.
This process involves heating both pieces simultaneously and pressing them together. The two pieces then cool together and form a permanent bond. When done properly, the two pieces become indistinguishable from each other. This process is commonly used in plastic pressure pipe systems to join a pipe and fitting together.
The current SABS specification, SANS 4427, covers 3 different material grades (PE 63, PE 80 and PE 100). These three material grades have different properties which enables them to be classified with minimum required strengths (MRS) of 6.3 MPa, 8.0 MPa and 10.0 MPa respectively.
HDPE has good chemical and abrasion resistance and are extensively used in chemical, waste and slurry applications.