... Ram BOP * API dual-ram BOP , BOP Hydraulic ram BOP of wellhead equipment* Bore size: 7-1/16", 9", 11", 13-5/8", etc. * working pressure: 3000psi, 5000psi, 10000psi ... and 15000psi.* Body Styles: single, double, ... be used to replace Shaffer ram BOP, Cameron ram BOP, or Hydril ram BOP.Hydraulic BOP ramadopts hydraulic pressure to close ...