... variation : +/- 0.032. Furnace composition1) Magnetic belt type feeder2) Weight device3) Front degreasing & washing tank4) Dephosphating ... conveyor system, roller transmission, heat preservation material, heating elements, furnace fan circulating device, gas cracking control device ... mesh belt drivingdevice, material of hot insulation, heating apparatus, circulating fan apparatus,discharging rack, and ...