These are used for water supply networks with a nominal pressure of 10 bar (calculated for a temperature of 20°C), installed underground. Manufactured by mechanical processing on machines for PE100 electrofusion couplings, with the electrofusion fitting resistance embedded in the material, corresponding to SDR 17 (ISO S8) dimensions, in accordance with EN 12201-3:2011+A1:2012 and EN 1555-3:2010+A1:2012. The electrofusion couplings include a reinforcement system with active pipe clamping. The active clamping system is ensured by the pipe-in-pipe manufacturing technology. This eliminates the need for auxiliary devices for installation. Welding voltage: 40 V. Connectors: 4 mm. Welding indicators with limited displacement. Welding must be performed by authorized welders using appropriate equipment and adhering to the welding procedure.