In European Standard:Spring hinge, whether single or double action, embody a spring for the storage of energy but do not have a system for controlling and regulating the closing function. They provide their lowest closing power at, or near, the door closed position and, therefore, on latched doors,
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Single action spring hinge:A spring hinge has a spring in its “knuckle”, which is larger than usual. The spring is linked to one flap at the top and the other flap at the bottom. Therefore, when the door opens, the spring is wound up, as the two flaps rotate apart. When the door is released, the sp
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Door hinges, one of the hardware accessories, are used to connect or rotate the device so that the door can be freely opened and closed by means of hinges. In general, the hinge is composed of a pair of metal blades, and the height of the hinge plate can be adjusted up and down and left and right du
READ MORE American mortise locks are the best choice for commercial buildings. The quality and functions of the doors and locks will have a major impact on the safety of the building. In order to choose the appropriate American mortise lock, we need to figure out the answers to the following questions: how to
READ MORE Door coordinators are used to control the closing sequence of a pair of doors when both leaves are furnished with latching hardware and one leaf latches into the other. Typically, the doors will have a vertical rod exit device or automatic flush bolts installed on the inactive one, preassembled lock
READ MORE In modern home decoration, there are usually some inconspicuous parts, which are generally overlooked by us, while play a critical role. And everyone will not begin to pay attention to them until there are problems, however it is too late. For example, indoor door locks are in contact with us every
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