Offshore workover rigs are used for workover operations on offshore production platforms. They mainly have diesel engines, DC, AC, electromechanical composite and other driving methods. The models include HXJ90, HXJ110, HXJ90, HXJ135, HXJ160, HXJ180, HXJ225, etc. Different driving types can be configured according to users' needs. The types of derricks include K-type, tower type structure, and base type mainly consisting of a row frame structure, equipped with hydraulic disc brakes and pneumatic disc brakes.