As a leading hardware manufacturer, we specialize in a comprehensive range of door hardware products, certified to meet global quality and safety standards. Our portfolio includes door hinges, door locks, smart locks, door closers, panic exit devices, concealed hinges, handles, lock cylinders, glass

As a door hardware company, D&D understands the importance of safety when it comes to protecting your property and loved ones. That is why we are proud to offer UL fire bars as a reliable solution for fire-rated doors. In this article, we will introduce you to UL certification, fire-rated doors, and

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Some items of building hardware are essential to ensure that the fire-resisting door stays closed in its frame in a fire emergency.

The surface vertical rod exit device mounts to the surface of the door. A top and a bottom rod extend the full height of the door and are attached to latch-bolt assemblies. The top latch-bolt assembly engages a strike that can be either surface-applied or mortised into the soffit of the frame. The bottom latch-bolt assembly can latch into a surface-applied or mortise strike in the floor. A latch-track threshold can also serve as a strike to secure the bottom latch-bolt assembly. Similar to rim exit devices, the operating trim extends through the door thickness and engages the lock case of the exit device. The clearance between the door bottom and the finished floor is an important dimension that needs to be addressed. Depending on the design of the latch-bolt assembly and the strike, the doors may have to be ordered with a non-standard undercut to ensure the latch-bolt can properly engage the strike.

Fire door is one of the measures for building fire separation. It plays an important role in preventing the spread and spread of smoke and fire and reducing the loss.Some items of building hardware are essential to ensure that the fire resisting door stays closed in its frame in a fire emergency.

In order to provide an effective barrier to a fully developed fire, a door has to remain closed within the frame. In the case of single action doors, this role might be undertaken by a latch. In certain cases there is a need for a lock to be fitted to a fire-resisting door. This might be on a duct door which is normally kept locked with only occasional access to service equipment, or other fire-resisting doors which for security reasons are locked for periods of time.

Due to tooling costs and similar considerations, variations of hinge sizes and fixing methods are not easily accommodated on a steel door. Steel door manufacturers generally provide their own steel hinges, which otherwise comply with these requirements, as part of the fire-resisting steel door-set and these are covered by evidence of performance.

To ensure the quality of fire doors, the selection of hardware accessories is also an important link. Since fire doors are special for fire protection, their accessories must of course also be special for fire protection, so the selection of fire door hardware accessories must be strict. Reasonable installation, proper management, and use in place are directly related to the fire protection effect of the fire door.

When used in a fire-resisting door assembly, the door leaf should be hung on single-axis hinges in accordance with local and national regulations. Hinges fitted to fire-resisting doors should be able to achieve the intended fire rating; also the hinge should be able to allow the door closing device, when fitted to a fire-resisting door assembly, to close the door leaf reliably from any angle to which it has been opened, overcoming the resistance of a latch or any seals when fitted.

The fire door hinge is the center of the fire door suspension system. It is responsible for opening and closing the door for daily use. It can withstand the flame temperature in the event of a fire, ensure the functionality of the fire door, and protect people from using the fire door to escape. The fireproof hinge not only plays an extremely important role in the door suspension system but also ensures the normal opening and closing of the door. At the same time, it also plays a very important role in protecting life. For example, the fire-rated door hinge for fire-rated doors.

The necessity of panic exit device The scene of the fire is unpredictable. First, people inhale a large amount of smoke and cause fatigue and even loss of consciousness. If it is an ordinary handle lock or ball lock for an escape door, let alone pulling down or turning the handle to push the door ou

Fire rated door refers to the door that can meet the requirements of fire resistance stability, integrity and heat insulation within a certain period of time. It is mainly used in the openings of firewalls, stairwell entrances, evacuation walkways, pipeline wellheads, etc. Fire rated doors are usually used for people. When a fire occurs, it can prevent the spread of fire and the diffusion of smoke within a certain period of time, ensure the safe evacuation of personnel, and play a role of sealing when the positive pressure air supply system is working. To ensure the quality of fire doors, the selection of hardware accessories is also an important link. Since fire doors are special for fire protection, of course, their accessories must also be special for fire protection, so the selection of fire door hardware accessories must be strict. Reasonable installation, proper management, and whether it is in place are directly related to the fire protection effect of the fire rated door.

Fire rated hardware is the heart of a fire rated door. The hinge has an extremely important role in the door suspension system to ensure the normal opening and closing of the door. At the same time, hinges also play an important role in life, such as hinges used on fire doors. What happens if the fire door hinges does not use on fire door? Be the hinge necessary for fire protection? Below we analyze from two points, whether the hinge needs fire protection.