European profile lock cylinders are the most popular type on the market. They usually have the same shape but differ in material, size, brand and especially in the type of key and locking mechanism. Lock cylinders offer security features such as anti-picking, anti-drilling, anti-shattering and anti-

D&D offer a wide range of quality finish solutions to meet the needs of different architectural styles and environments. D&D pride ourselves on being able to offer a wide variety and style of door hardware products to meet different architectural needs and functional requirements.

Conventional hinges are available in different heights, widths and weights that will satisfy most doors and frames. Failure to evaluate and select the appropriate hinge size can lead to early door or hinge failure. These door and frame factors influence hinge selection:Door and frame materialFrequen

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,

Door hinge is the most common door accessory device, which connects the door frame to the door leaf and allows rotation between the two. The hinge can bear the weight of the door without causing the door to sag, and can make the door to rotate freely for a long time under the lowest frictional resis

It is important that the door that you choose has the UL Listed Door Hinge, as this will make it much safer for you, your family, and those who visit you. One of the most common mistakes is using cheap ball bearing hinges for interior doorways. Although these types of door hinges will work fine, they can easily break if something happens to them, such as a large impact.

In commercial buildings, human life and safety is always the most important issue and in emergency situations, such as fire incidents, easy and quick exits can save lives. Panic bars are the main hardware item to provide people with a quick and easy exit in an emergency situation.In this article we

Modern door chain locks add security in a similar way to a bolt. However, they allow a door to be opened to approximately 150 mm and still keep it securely fastened. The occupant can check a caller’s identity before fully opening the door.A ‘door guard’ provides very good security and is more robust

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

The scene of a fire is unpredictable. For a start, people inhale large amounts of smoke, causing fatigue and even unconsciousness. In the case of ordinary escape doors with handle locks or ball locks, it is obviously more difficult to pull down or turn the handle to push the door out. If the smoke i

The exit device is available in two design styles.1.The contemporary touch bar (touch bar) type:The touch bar type usually is a one-piece assembly consisting of a rectangular body extending from the lock stile to the hinge stile. Part of the body protrudes beyond the unit as a touch bar (touch pad/c

The hinge is one of the most active components of a door unit in combination with door locks, exit devices and door closers. Generally speaking, if the right hanging device is not selected, the door will not function properly. How do we determine the proper type of hinge?There are several pieces of

Fire has always been a hidden danger in our lives, which is why many public places and homes are now equipped with stainless steel fire doors. This way, in the event of a fire, our lives can be better protected. Here we take a look at the features of metal fire doors and a guide to choosing fire doo

Door hardware refers to hardware that is widely used in wooden doors, glass doors, metal doors, etc., including door closers, floor springs, door hinges, door bolts,door locks, door stops, etc. Among them, door control hardware is a daily metal product that is extremely important for people's daily

Public buildings like most industrial and commercial premises are required to meet the conflicting need for both safety and security. Regulations relating to escape from buildings and general safety have made it desirable that doors at exits in public buildings, places of public entertainment, shops

The stainless steel hinge is a kind of metal connecting piece, which makes the door to be installed on the door frame, so that the door can rotate freely. The hinge can be seen on any door, but it is often overlooked and used without professional selection. The following is the functional descriptio

Correctly handing an opening or an item of hardware is one of the most important skills you need to acquire when you work in the door and hardware industry. Many items of hardware have to be handed correctly when ordered from the manufacturer. For example, some models of mortise locks, door closers