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The engine piston should bear the considerable mechanical pressure.As the engine performance is enhanced in the recent years,the working environment of piston has been become very harsh,e.g.heat load(the speed of increasing power should excess 50KW under the circumstance of 2600°C instantaneous temperature in the combustion chamber)and average ignite perssure have been raised much.We meet the need of "lighter piston,lower oil-consumption and enough rigidity & intensity caused by high running-up and longer piston path. Material Characteristics Eutectic Aluminum Alloy ZL109 AC8A KS127 MAHLE24 AL108 SAE334 Over Eutectic Aluminum Alloy AISi18 AISi21 AC9B Surface Treatment Hard Anode Oxidization Tin-faced Surface Oxidized Spraying Graphite Product Type Inserted Abrasion-resistant Ring Inserted Anti-expansion Steel Piston Cast Internal Cooling Oil Circuit Porcelain Composited Material Porcelain Composited Material Non-conventional Pinhole