... , Blast Furnace, Sinter Plant, Coke Oven Gas, Sulpher Dioxide, Sulpher Trioxide and Natural Gas.Application in Iron & Steel, Oil Refinery, Petro-Chemicals, Fertilizers & Chemicals, Air ... used in mining, construction, machinery, chemical industry, metallurgy, transportation and air separation, instrument control, medicine etc.Parameters of natural gas, oil field gas compressor ...