DetailsMain features include precision temperature control,Website:http://www.springmachinechina.com, energy saving, and less pollution. It take about 5-120 minutes from the temperature of 50-500℃ (adjustable)to complete heat treatment of the work pieces(e.g spring, chain, standard metal pieces, hardware pieces)which are put into the entrance of the furnace on the stainless steel belt.The furnaces ...