... 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 ... industry. →Head office in Shanghai ,2 plants in Yancheng, Jiangsu→2011 sales over 200 million→Over 200 employees→Design and research ...