There are 6 main points to be paid attention to:
1, Before installation, check the matching of the door hinge leaves with the door or window frame.
2. Check if it is matching of the height, width and thickness of the hinges and the hinges channel.
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3, It should be checked whether the screws and fasteners connected to the hinge and the fasteners are matched.
4, The connection way of hinge should match with the material of frame, such as hinge used for wooden door, welded to one side of steel frame and fixed with wooden screw on one side connected with wooden door.
5, when the two leaves of the hinge are not symmetrical, we should identify which page should be connected to the frame, which door hinge leaves should be connected with the door or window frame, and the side connected to the three segment of the hinge should be fixed with the frame, and the side connected to the two segment of the shaft should be fixed with the frame.
6, Installation, should guarantee the same one hinge on the axis in the same vertical line, so as to avoid the door / window bounce.
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