Fire Resistant Door

 Fire Resistant Door
Fire is a disaster being closely connected with our real life and it is figured that valuable lives and assets can be protected against fire if appropriate precautions and countermeasures are fully considered because most of fire accidents happens not by natural disaster, but by carelessness.
UL(Underwriters Laboratories Inc.), the international safety organization, tested and inspected the fire door designed, manufactured and installed by us. As a result of withstanding up to 1052 for 3 hours, our fire resistant doors obtained .

The test exposed to the specimen to a standard fire exposure controlled to achieve specified temperatures throughout a specified time period, followed by the application of a specified standard fore hose stream. These methods are intended to evaluate the ability of a door assembly to remain in an opening during a predetermined test exposure.

Steel fire resistant doors are "rated" by time (in minutes or hours) that a door can withstand exposure to fire test conditions. Hourly ratings include 3 hours, 1-1/2 hours, 1 hour, 3/4 hour and 1/3 hour. Among other things, we achieved a certificate of the maximum rating required of any swing type fire door being three hours without twisting and bending.

The fire resistant door must be designed within a seamless hollow steel structure, complying with ANSI A123.1. Make sure the door's faces or sides have no joing traces; its upper and lower areas adhere to each others; and the inner structure is composed of steel rib reinforced materials. All the doors must be insulated with glass fibers with 3.0 pcf, rock wools and ceracles.

- Storage Room Doors(Collection Protective Doors)
The Storage Room Door is a door installed in collection areas to protect museums, art galleries, pavilions, valuable cultural assets from fires, theft, destruction, and other dangers, offering functions such as fire proof, water proof, air or water tightness, etc.

Cultural properties and exhibits should be protected against damage generated by varians in internal humidity and temperature since they are usually preserved in the storage room at all times with the exception of exhibitiion period. Moreover, it is necessary to control the admission of people from the outside.

It is recommended to design the door frames and bars so that they can resist static and external pressures without losing their functions under 12.5 Psi for sliding doors, applying the 1.0 safety rate, which is obtainable in counting the ultimate strength of used materials.
In addition, make sure that the doors and accessory devices can operate under an ambient temperature ranging from -20 to 50 and that they are not damaged at temperatures within 30~80.