1. The small workover rig adopts heavy-duty classII chassis, with good mobility and wildness. The auxiliary equipment such as mast, winch, transmission box, driller’s box and hydraulic winch are installed on the frame, which is compact in structure and light in weight.
2. The main brake adopts band brake or hydraulic disc brake, the mast adopts single or double sets of mast-shaped forward tilting derrick with front opening, the hydraulic cylinder lifts and retracts, and is equipped with windbreak tension rope and anti-overturn tension rope.
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