Pipes are heat resistant. Resist low temperatures well. High corrosion resistance. Has a low transparency. The gray color prevents the exposure of light into the pipes and therefore serves as a barrier to bacterial growth.Pipe material: polypropylene glass fiber reinforcedMaterial: FiberglassPurpose: hot water supplyWorking pressure, bar: 25Wall thickness, mm: 4,2: 25Operating temperature, С: 95