Wire on Tube Condenser. It is made of copper coated Tube and steel wire coated with cathodal electrophoresis , it has good corrosive resistance (while testing at sealed box with steam of saltwater for 1000 hours, free of rust),meets the requirement of the ROHS by testing by SGS. Ideas for the cooling system of refrigerator, freezer water dispenser, wine cooler, etc. Copper coated tube diameter(mm):4.76, 6.35 Steel wire diameter(mm) : 1.3-1.5 The max sizes can be produced:2*1.2m Layers:1-5