These are used for the construction of natural gas networks, as well as for potable water supply systems, made from high-density polyethylene pipes with SDR 11 wall thickness, in accordance with EN 12201-3:2011+A1:2012 and EN 1555-3:2010+A1:2012. Manufactured by injection molding from PE100, with the electrofusion fitting resistance embedded in the material, with dimensions corresponding to SDR 11 (ISO S8), in accordance with EN 12201-3:2011+A1:2012 and EN 1555-3:2010+A1:2012. Welding voltage: 40 V. 4 mm connectors. Welding indicators with limited displacement. Integrated pipe clamping system. Welding must be performed by authorized welders using appropriate equipment and following the specified welding procedure.