SFZ18-35 manual single ram BOP: mainly used for middle test drilling, production, test and new oil well perforating the underground operations, to prevent well kick or blowout, to ensure safe operation, with reasonable design, compact, light weight small size, easy operation and maintenance. The main technical parameters: Model: SFZ18-35 maximum working pressure: 35MPa flange outer diameter: φ480mm pad ring number: BX156 Dimensions: 1185 × 480 × 510mm Quality: 503Kg SFZ18-21 manual single ram BOP: mainly used to prevent the job well kick or blowout midway test drilling, oil, oil testing and downhole perforating new wells to ensure job security, reasonable design, compact, light weight, small size, easy operation and maintenance, welcomed by users. The main technical parameters: Model: SFZ18-21 maximum working pressure: 21MPa flange outer diameter: φ380mm pad ring number: R45 Dimensions: 1050 × 380 × 395mm Quality: 260Kg