This product is a kind of double-open floor hinge and is applicable for aluminum door, steel door and toughened glass door. Key parts of the main unit are made of quality low alloy steel after quenching and tempering as well as precise grinding, the internal part 　 is filled with quality hydraulic anti-frozen machine oil, thus assuring  the unit runs smoothly and flexbly under different temperature. Precise pointing close performance make the door smoothly and accurately 　 position at zero no matter which direction the door is open. The max angle of door reaches 116°, the door will automatically and accurately position when it is opened at 90°. Double speed adjustment, the close speed at 116°-25° and 25°-0° for dual stepless speed adjusting, users may set satisfied effect at will. 　Pass 300, 000 times of running test, examined by national quality inspection authority, the product is proven to meet QB/T3884-1999 standard. Built-in relieve value, prevent damaging the main unit and oil leakage caused by shutting the door by strong pressure or wind. Unique design, advanced technology, make you enjoy convenient, practical and outstanding effect when using the product.

Dimension：270*130*53mm. 　

Max Door Leaf Size：850*2000mm. 　

Door Weight ：65-85kg. 　

Max Angle of Door：116°. 　

Door Open Torque: 40N·m,

DoorCloseTorque：20N·m. 　

The Door Close Torque won′t be lower than 20N·m at 5°. 　

Adjustable length is 6mm and width is 5mm in cement box. when calibrating zero position, it can be adjusted at ±2°vertically.