... control,furnace temperature’s evenness is good. 4,High in automation,simple in operation. 5,Can be set by PID programme, ... safe and reliable.Trolley-type annealing furnace is widely used in chemical industry, petroleum, foods, metallurgy, mechanism, light industry, electric ... steel, tool steel, car bridge, gear box of diesel engine, mining machinery, bridge wall of loader,etc.We can design the products ...