products: LWC, Pancake Coils, ACR Straight Tubes, Capillary Tubes, Copper Water Tubes, Copper Fittings, insulated Copper tubes. Weight: 100-250kgDimensions: OD 5-15 ... away from oxygen. 3)with steel strip fastening the tubes from top in order to make it not collapse. ... the most advance technology in copper process, Rolling-Casting. Inner-grooved Copper Tube is of high cleanliness and super brightness of ...