door floor spring, floor hinge 1) 500,000 times open/close tests. 2)Capacity weight100- 150kg. 3)for double swing door door floor spring, mab floor hinge, spring closer, door closer, ground hinge,ground spingiron body+SS304 cover, the cover can be PSS & SSS.can match MAB, DORMA&NEW STAR pivot.very popular design in middle-east market.very good spring&oil.500,000 starting times guaranty.suitable for double swing door Width of 800-1000mm and door weight of 100-120kg.The door can be opened to Max.135 degreees and closing effect is valis 80 or 90 degree with double section adjustment.