Bi-metal saw banding uses M42/M51 high-speed Cobalt steel as teeth part and special spring steel as the blade body. They are not combined through high-speed electron beam, but firstly heat treat respectively, then weld them together through high-energy, so that the saw would be more wearable, more red hardness and better fatigue resistance than that of the general technology. 1, Ground mass is great, special spring steel and M42/M51 high-speed Cobalt steel; 2, The two parts of the blade body and the teeths are heat treated respectively; 3, The unfinished teeths are cylinder-shaped, And Welded to the blade body through high-energy; 4, Longer life, lower price. 5, Width can be 54mm, 67mm, 80mm, 100mm, 120mm; Forward angle can meet customers, 0íp , 3íp , 5íp , any others. Carton packing, wooden packing