Hewai 10-63mm PE-Rt EVOH Pipe Oxygen Barrier Water/Plastic Pipe for Underfloor Heating. 50-Year Warranty: Comprehensive warranty coverage for 50 years under normal conditions. Oxygen Barrier Technology: EVOH layer prevents oxygen ingress, protecting pipes from corrosion and microbes. High Daily Capacity: Advanced production lines capable of producing 300,000 meters per day. Premium Raw Materials: Sourced from top suppliers like Dowlex, Mitsui, SK, LG, and Lyondellbasell. Full System Guarantee: In-house production of PEX, multilayer pipes, and fittings ensures complete system integrity. Strict Quality Control: Constant online monitoring and on-site lab testing ensure only the best pipes leave. OEM Service Available: Source factory providing flexible OEM services for custom requirements. Versatile Applications: Suitable for floor heating, water supply, gas, air conditioning, and solar systems.