... , it is specialized in HVACR copper tubes, environmental protection copper water tubes and copper fittings.The main products are: LWC, Pancake Coils ... , ACR Straight Tubes, Capillary Tubes, Copper Water Tubes, Copper Fittings, insulated Copper Tubes and Plasic-coated Copper Tubes. Being of the ... that of same specification of plain tube. ASTM copper tubes and pipes big size