... united compressor in major type of hydrogen, propylene, ethylene compressorSuitable for Oxygen, Nitrogen, Hydrogen, Carbon Dioxide, Ammonia, Synthetic Gas, Rich Gas ... -27.7/414M8-68/20structure typeZMDMcompressed mediumOxygenOxygenNitrogenNitrogencooling stylewater coolinglube style for cylinderoil freeoil freeoiloil freeNo. of row3424No. of compressing stages344 4capacity ...