... :well drilling 3.Material:forged steel/cast steel API double Pipe rams bop Standard:API 6AApplication:well drillingMaterial:forged steel/cast steel Ram ... onshore and offshore drilling.Ram BOP, such as single ram BOP, double ram BOP, triple ram BOP,quadplex Ram BOP, are mainly hydraulic operated or ... valve, chock valve, etc)3) Fitting(union, manifold,elbows).4)Bop(Annular/ram) API double Pipe rams bop