product features：
The cylinder block is made of high-quality cast iron. Two regulating valves can easily adjust the opening and closing speed. Built in safety valve to prevent ground spring damage or oil leakage caused by closing the door under external strong pressure or strong wind. With door stop function, the maximum applicable door width is 1400mm and the door weight is less than 450kg. With double cylinder design, the door opening force is lighter, the door closing speed is more stable, the oil circuit is double guaranteed, and the service life is longer. 90 ° or 105 ° can be positioned, and the maximum opening angle of the door is 180 °. Indoor and outdoor, both left and right doors are applicable to realize two-way opening. Industrial applications that meet high requirements. Low temperature antifreeze hydraulic oil is adopted, and the ambient temperature can reach - 30 ° ~ + 50 °.
