... room temperature, which is convenient, stable and economical Oxygen Making Machine Specification Model NoBGPOCapacity2~240Nm3/hPurity93±3%Initial ... . Ferrous metallurgy: For electric furnace steel making ,blast furnace iron making,cupola oxygen blasting and heating and cutting, etc2. ... can be obtained by equipping extra purifying device for removing bacteria, dust and odor. Oxygen making machine