Water Gas Heater Spare Parts Oxygen Free Copper Gas Water Heater Heat Exchanger. Oxygen Free Copper Material: Ensures high thermal conductivity and strong corrosion resistance for efficient heating. High Temperature Tolerance: Oxygen-free copper withstands high temperatures without releasing harmful substances. Customizable Dimensions: Size and weight are fully customizable to meet specific design requirements. Eco-Friendly Design: Safe for water heating with no harmful substances released into the water. Fire and Flame Resistant: Features fire-resistant and flame-retardant properties for enhanced safety. Full Customization Support: Offers full customization, minor customization, and flexible options from samples or designs. ISO9001 Certified Quality: Manufactured under ISO9001:2015 management system with 100% finished product inspection. Fast Delivery Capability: Ensures high precision and fast delivery with a lead time of one month.