It is very convinient for packing and transportation. it has all the advantages of Plain copper tubes Detailed Description1)Outer Diameter: 6. ... efficiency, easy welding, and corrosion resistance.Applications: connective fittings of air conditioning units, refrigerators, freezers, water heaters, andiron fireplae grates.W.T ... 19.05√√√√√√√√≥22.22√√√√√√Length: 15m , 30m, 40m Pancake Coil Copper Pipe