Product material PE-RT II / Al / PE-RT II Surface roughness 7 µm Thermal expansion 0.026 mm/(m·K) Thermal conductivity, pipe 0.43 W/(m·K) Click on an application purpose to search more products For cold and hot potable water For cooling and heating water without antifreeze agent For cooling and heating water with antifreeze agent For service water and process water For treated water For rainwater with a pH value of > 6.0 For seawater For extinguishing water (wet) For extinguishing water (wet/dry, dry) For chemicals and technical liquids For compressed air (oil purity class 0–3) For negative pressure For inert gases (e.g. nitrogen) For technical building systems, industry and shipbuilding Application overview – Geberit Mepla Click on a characteristic to search more products Inherently stable Can be bent by hand Forms a barrier against diffusion Black exterior Pipe end with transparent protection plug DN: 15 d, ø: 20 mm di, ø: 15 mm s: 2.5 mm L: 50 m