Calvert Group is primarily a supplier of pipes and ancillary equipment to the oil, gas and water industries. The Group has access to any range of quality pipes from HDPE to Iron Ductile, Epoxy to nickel plated and more. It provides ancillary equipment of pumps, valves, storage tanks (above and below ground) etc and has the capabilty of installation and maintenance. It also provides oil purification services and machines.