55KW~185KW Oil-injected screw type explosion-proof air compressor (outlet air oil content not over 3ppm, for ... coal mine use) Typical Features of RICH oil-injected explosion-proof screw air compressorSafety & ReliabilityFull consideration in power phase dislocation,phase ... :600mm,900mm,1200mm optional.Agents Wanted!!! 55~185kW Oil-injected explosion-proof screw air compressor