1.compressor part/air compressor part 2. Made by Continuous Cast Iron Tube 3.High ... Iron--High P Cast Iron--High Ni Cast Iron...III. Specification: ---Cross-Section:Round,Rectangle,Elliptic,Hexagonal ---OD:60-320mm,Thickness ... ,such as railway vehicle, oil machine,engineering machine,auto parts,compressor, hydraulic and pneumatics,chemical pump, machine tool,metallurgical equipment etc ...