Janya Extrusions Pvt. Ltd. Manufactures Cupro Nickel Tubes for Power Stations. Janya Extrusions Pvt. Ltd. Is an ISO 9001:2000 certified company. Cupro Nickel Tubes for Power Stations has the size range of 3 mm OD to 125mm OD with thickness of 0.5 mm to 20 mm wall. Cupro Nickel Tubes for Power Stations has two varieties, 90/10 Cupro Nickel Tubes and 70/30 Cupro Nickel Tubes. A Copper Nickel Alloy in the ratio of 90/10 that has very high erosion and corrosion resistance. It has very high weld ability, easy for installation and are used for Condensers, Ship building, Refineries etc. A Copper Nickel Alloy in the ratio of 70/30 having small amount of iron and manganese to improve corrosion resistance in high velocity waters. The alloy is relatively insensitive to stress corrosion and has good cold and hot working properties and is readily weld able.