These standards are recommended by the Hollow Metal Manufacturers Association as representing the long accepted usual preferences of both architects and users under normal conditions of use. Under some circumstances these standard locations are inadvisable for certain items based on accessibility codes. For example, a lower position for the deadlock is possible, when intended usage by small children or handicapped persons necessitates require positioning the user handled items in other than these recommended standard locations.

Among the many benefits of custom hollow metal is the virtually unlimited choice of hardware that can be used. The architect is free to select those items which will provide the operational features, aesthetics, and quality desired, such as the use of electrical hardware, pivots or anchor hinges, concealed closers, concealed vertical rod devices, separate deadlocks, preassembled locks, and other architectural hardware.

The stainless steel hinge is a metal connector that is seen on the door every day so that the door can be mounted on the door frame and can be freely rotated. The hinges can be seen in any place with a door, but it is often overlooked and used without a professional choice.

Fire door can meet the requirements of fire stability, integrity and heat insulation in a certain period of time.

The building inspection services help identify critical fire, life safety and security building improvements needed to achieve code compliance with the ultimate goal of achieving fire, life safety and security of the building.

Fire rated door refers to the door that can meet the requirements of fire stability, integrity and thermal insulation in a certain period of time, together with the frame. Fire door is one of the measures for building fire prevention separation. They are usually used on fire walls, stairwell entrances or pipe wells, requiring smoke and fire isolation.
Fire doors not only have the function of ordinary doors, but also have the function of preventing the spread of fire and smoke. They can prevent the spread of fire in a certain time and ensure the evacuation of people.

Stainless steel is short for stainless acid-resistant steel. Weak corrosive media such as air, steam, water or the steel with rust resistance is called stainless steel.
Each stainless steel has good properties in its specific application fields. The key to success is first to clarify the usage, and then to determine the correct steel grade.

As we all know, fire rated hardware is the heart of a fire rated door. The normal open and close of the door is inseparable from the tacit cooperation of each fire rated hardware accessory. If a fire rated door is not used with a complete door system, it cannot pay a role as a door.

Fire rated doors can meet fire resistance stability, integrity and insulation for a certain period of time. It is a fireproof partition with certain fire resistance, such as in fire compartments, evacuation stairwells, and vertical shafts.
In addition to the function of ordinary doors, fire doors have the function of preventing the spread of fire and the spread of smoke, which can prevent the spread of fire for a certain period of time and ensure the evacuation of personnel.

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 hinges. There are many types of door hinges, such as fire rated door hinges, metal door hinges, European door hinges, etc. In general, the hinge is composed of a pair of metal leaves, the distance between hinge and door can be adjusted when installing .One of the characteristics of door hinge is that it can be used according to the space and the opening angle of the door, so that various doors have corresponding extension. Different doors need to pay attention to their size when using hinges.