... inner and outer surface GaoQingJie super light uniform Pancake Coiled copper tube is one of our main products, which is especially used for ... Coils, ACR Straight Tubes, Capillary Tubes, Copper Water Tubes, Copper Fittings, insulated Copper Tubes and Plasic-coated Copper Tubes. Being of the top-class ... .015 to 0.0406021040>0.04050210-0.015 ~ 0.040 copper coil