... oven equipment oil cylinderMaterialSteel,20#,45#,Aluminium, bronzeComposeHydraulic body, Hydraulic piston, Hydraulic RodHydraulic clinder typesPiston,plunger,piston, telescopic,SwingoutInside Surface roughnessRa 0 ... as excavators, bulldozers, back hoes, cranes and graders.2.Hydraulic cylinders are used in elevators in buldings. Hydraulic elevators use large compound telescoping ...