Product material CrTi steel 1.4520 (EN 10088) Surface roughness 1.5 µm Thermal expansion 0.0104 mm/(m·K) Thermal conductivity, pipe 20 W/(m·K) Specific thermal capacity 430 J/(kg·K) Click on a characteristic to search more products Not admissible for drinking water installations Silicone-free (LABS-free) Valid for system: Geberit Mapress Therm DN: 40 d, ø: 42 mm di, ø: 39 mm s: 1.5 mm L: 6 m