door closer, floor spring

详情

D***-A/B door closer Powder coating, preveting rust, Precisely sealed, preventing oil leakage. High quality die-casting aluminum alloy, body protection with three-layer paint. Two hydraulic press valves controling two-stage speed automatically, **0 degree fully hydraulic control. Color choice D**4 floor spring ***** design, righ/left-hand side to open in single or both sides； 2.Low temperature frostbite hydraulic oil make the door freely at the different temperature； 3.*0 degree auto-orientation, Max **5 degree, Non-hold machine available； ***** be adjusted right or left, forward or backward, down or up; 5. *****0 cycles;