... : manual or shear 2. Range of ram type:sealing,shear, kava 3. model:SFZ12- ... and in the process of perforating new wells sealed cable.•BOP type :Ram-type BOP,manual single-ramBOP ... ,Tubular annular BOP and manual , hydraulic double-ram BOP.•Strictly in accordance with API 6A 6D 16A ... and production•Specification:drift diameter: 140mmrated working pressure: 21Mparange of ram size:2 7/8" , 3 1/2" , ...