Brass wire annealing furnace consist of number of seamless pipe of required grade of steel. The pipes are arranged horizontally at a defined pitch. Each wire uses 1 pipe. The pipe longitudinally the pipe runs in three zones pre-heating, heating & soaking . Pipes are heated through top & bottom heaters designed at 800 to 1000 degree C . The cracked ammonia gas is supplied in each pipe to get scale free annealing of running wires. Wires are cooled in air-cooling zone before spooling.