Technotherma India [Pvt] Ltd. Manufactures Strand Annealing Furnace. Technotherma India [Pvt] Ltd. Supplies wide range of heat treatment furnaces, industrial furnaces, and annealing furnaces. The Strand Annealing Furnace is electrically heated tubular furnace used for annealing of ferrous and non ferrous tubes, wires and strips and many such other applications.