Fire & Security Door with High Performance
The Fire and anti-theft door of Zhongwo Company has excellent anti-theft performance and super Fire performance. Because of its solid structure and simple shape, it is widely used in high-rise residential buildings. The door frame which is made of high quality galvanized steel strip is rolled forming at one tiem thtough the special production line. Besides, the door frame is also equipped with inlayed Fire expansion strips and installed with Fire seals.By closing there is no impact sound to hear.And thirdly the crossbeam and mullion are welded in 45 degree. The door fan made of high quality cold rolled galvanized steel plate is bent accurately through bending machine, inside of which it is filled with green environment friendly perlite plates which are key to its Fire funktion,and charackters of heat insulation and sound insulation. As to the surface treatment man introduces the process technology without welding spots, thus flat appearance.
