Engineering multi-stage hydraulic cylinder Multi stage hydraulic ram Two stage hydraulic cylinder 3-stage hydraulic cylinder 5 stage hydraulic cylinderMulti-stage telescopic hydraulic cylinder for trucks The multi stage hydraulic cylinder could be single acting or double acting.Piston rodmaterial is chrome plated 45# steel or 40Gr.TubeMaterial is steel 20# - 45#. Surface treatment can be made as per customer's request. Multi stage hydraulic cylinders can be used for engineering and mining dump trucks.Advantage 1.Custom design,Website:http://www.thshydraulic.com, all the components are standard parts, easy for future maintaince. 2.High quality parts, bearing, seals. 3.15 years large hydraulic cylinder experience, some of our engineers had worked in this field for 10 years. 4.Competitive price, fast delivery. ISO9001: 2008 quality certificate.