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Oxygen-barrier PE-RT pipe contains an EVOH barrier layer designed to limit oxygen permeation into a closed-loop heating system. The barrier requirement should be checked carefully in underfloor heating projects that cont

Set the PPR welding machine to 260 ±10 °C. Heating, joining and cooling times change with pipe outside diameter; the SPK chart below covers sizes from 20 to 110 mm. Important: These settings are for PPR/PP-R socket fusio

The linear thermal expansion coefficient of standard PPR pipe is approximately 0.15 mm/m·°C. SPK's current technical table uses 0.035 mm/m·°C for glass-fibre reinforced PPR and 0.030 mm/m·°C for aluminium-foil reinforced

PPR pipe operating conditions are determined by evaluating temperature, pressure and intended service life together. The DIN 8077 table below uses a safety factor of 1.5 to compare PPR pipe series across different temper

This guide lists PPR pipe sizes for 20, 25, 32, 40, 50, 63, 75, 90 and 110 mm outside diameters. Use the DIN 8077 tables to compare wall thickness and manufacturing tolerances for SDR 11, SDR 7.4 and SDR 6 pipe series. H