Janya Extrusions Pvt. Ltd. Manufactures Copper and Zinc Alloy Made Aluminium Brass Tubes. Janya Extrusions Pvt. Ltd. Is an ISO 9001:2000 certified company. The company also manufactures Brass Profile, Brass Rounds, Brass Bar, Copper Bar, Copper Bus Bars, Copper Profile, Copper Rounds, Copper Tubes, Cupro Nickel Tubes, Brass Flats, and Brass Tubes. Copper and Zinc Alloy Made Aluminium Brass Tubes are made of various sizes and lengths. A Copper & zinc alloy in the ratio of 76/24 having 1.8-2.3 % of Aluminum for high resistance and some percentage of Arsenic to help against dezincification form the composition of the brass tubes. Copper and Zinc Alloy Made Aluminium Brass is commonly used for condensers tube and is recommended for use in marine and land power stations where cooling water velocities are high.