Oilfield Multi‑Stage Hydraulic Cylinder for Rig Moving and Heavy Load Jacking The product covers many field such as petroleum and gas, railway, coal mine, construction and engineering mechanical etc. and used for outdoor, marine and polar under severe ambient. Especially in the field of petroleum and gas,we have manufactured a mass of lifting cylinder for drilling rig and workover rig, multistage lifting cylinders for chassis, damping cylinder, sliding cylinder, hydraulic