... temperature, which is convenient, stable and economical Oxygen Making Machine Specification Model NoBGPOCapacity2~240Nm3/hPurity93±3%Initial Pressure0 ... uses zeolite molecular sieve as sorbent, produces oxygen by making use of the PSA principle. Under certain pressure, ... 1. Ferrous metallurgy: For electric furnace steel making ,blast furnace iron making,cupola oxygen blasting and heating and cutting, ...