Supplies high-purity nitrogen, hydrogen and nitrogen-hydrogen mixed gas for the iron & steel industry, to be used in the bright annealing process of stainless steel, high carbon steel and general strip steel. The furnace types are: continuous annealing furnace and bell-type annealing furnace. Gas purity requirements: nitrogen purity is usually 99.9995%, hydrogen purity is usually 99.999%, while the mixture ratios are: H2 ratio is 5%-50%, N2 ratio is 50%-95%.
