D.C. Metal Corporation offers Copper Tubes for Solar Applications. D.C. Metal Corporation is an ISO 9001:2000 registered organisation that supplies copper tubes, copper wires, copper strips, copper bars and copper lugs. The Copper Tubes are used for solar water heating systems are produced from seamless drawn copper tubes in half hard temper and a variety of outer diameter and wall thickness combinations. These tubes are supplied in straight length, cut to the specific sizes to avoid wastage.