... in onshore and offshore drilling.Ram BOP, such as single ram BOP, double ram BOP, triple ram BOP,quadplex Ram BOP, are mainly hydraulic operated ... and can be used to replace Shaffer ram BOP, Cameron ram BOP, or Hydril ram BOP. Ram BOP is mainly composed of housing, side ... hydro-cylinder, cylinder cap, piston, piston rod, lock shaft, sealing parts, ram, etc. Oil well's sealing or opening is achieved by ...