1.Hydraulic cylinders can be used for tractors,Website:http://www.thshydraulic.com, harvesters, tractor loaders and other agriculture machineries.These cylinders have single stage and multi stage.Following are materials, customer could provide us drawing, sample or main parameters, then our engineer team can design it for you.Material :Piston: high quality nodular iron or 45# steelTube: 20# - 45# ...