... 6A Application:well drilling Material:forged steel/cast steel API single/ double ram blowout preventerStandard:API 6AApplication:well drillingMaterial:forged steel/cast ... in onshore and offshore drilling.Ram BOP, such as single ram BOP, double ram BOP, triple ram BOP,quadplex Ram BOP, are ... )3) Fitting(union, manifold,elbows).4)Bop(Annular/ram) API single/double ram blowout preventer