The hardware used carbon steel (S355J2G3 or 16Mn) ,the surface roughness Ra0.8, the processing precision IT03.piston and rod. we can produce different hardware ,such as piston and rod .we used carbon steel (S355J2G3 ,ASMT1040 or 16Mn) ,the surface roughness Ra0.8, the processing precision IT03. the piston will be apply hydraulic and pneumatic. Hardware