... , Water, General Plumbing, Heat Exchangers,Oil. Copper Tubes: Copper Pancake Coil, Copper Straight Pipe, Copper Capillary tube, Copper LWC Coil.1. Copper Pancake Coil: Outside Diameter: 3/16 ... -3.18mmTemper: Hard, SoftPackage: Carton Box4. Copper LWC Coil: Plain Copper LWC Coil and Inner-Grooved Copper LWC Coil a. Copper LWC Coil:outside diamete: 4mm-22.23mmWeight: 100 ...