The furnace body reinforcement material: 1, 20 I-beam 2.6 tons of 12000 yuan 2, channel 20 8 tons 38400 yuan 3, 15000 yuan 4 δ 63 tons of steel, 1 tons of steel 5 4800 yuan 5, the side door of 4 pieces of 8000 yuan 6, hanging door together 2 pieces of 6000 yuan: 84200 yuan