Mavharuvhu etambo ekuboorera anomisa mvura kuti isayerera ichikwira pamusoro petambo yekuboorera kazhinji kana chibooreso chikaba chichibva chadzika pasi.LANDRILL inogona kupa premium quality Full opening safety valve(FOSV), Kelly valve, Inside blowout preventer(IBOP), Drop-in check valve. , Float valve.