... Application:well drilling Material:forged steel/cast steel API single/ double ram blowout preventerStandard:API 6AApplication:well drillingMaterial:forged ... in onshore and offshore drilling.Ram BOP, such as single ram BOP, double ram BOP, triple ram BOP, ... piston with hydraulic force.Compared with products of other structures, the product has the following characteristics: 1- The combined type hinge ...