Preparatory work

• Checking the roundness of the pipes and adjusting if necessary
• Clamping the pipe ends axially into the welding slide
• Processing the pipe ends by squaring-off and cleaning them, if necessary
• Checking the plane parallelism and displaced joints and adjusting, if necessary
• Cleaning the heating element
• Checking the temperature of the heating element

• The pipe ends should be axially aligned before clamping in the welding machine

• Cleaning of the bonding surfaces of the pipe end to be welded by mechanically removing soiling, separating layers, oxidation layers etc.

HD-PE-pipes rolled off the bundled coil are often of oval shape; therefore, the pipe ends to be weld-shut are first to be adjusted by adequate redeformation measures.