... crankshaft, rotary drum, main shaft of machine tool, guide rail, vertical shaft, etc.Spray materials in use: zinc, aluminum, copper, ... , Babbitt alloy, etc.Notes: auxiliary equipment should be equipped.Air compressor: the one with discharge capacity of 0.9M3/min can ... spray gun. If sand blasting is taken into consideration, air compressor with discharge capacity more than 3M3/min should be used ...