Stainless steel wire annealing machine 
Using liquid ammonia, ammonia decomposing of hydrogen and nitrogen gas,then the mixture cleansed gas comes into protecting gas and go through the high temperature tube 310S.The stainless steel wires are put into the tueb 310S and annealed,become bright and unfading.Temperature controlled by TID thermostat with AT and a contactless switch, so that the temperature control accurately, easy to vision.