Self-closing gate hinges of the 90° series for welding – for gate systems with a larger opening range and a stop at the upper angle (90°–180°). Hydraulic closing with adjustable closing speed, automatic operation from approx. 85° to 0°; Type 108 additionally features a final surge. Available in designs SM, 57, and 108. For welding; protect the welded brackets from corrosion afterward.