Plastic steel windows: plastic steel windows devoloped in recent years after wood window, steel window, and aluminum window. Being the fourth generation of new windows and doors, they have advantages such as saving energy and steel, anti-corrosion, sound insulation, good leakproofness, flexible open, easy to clean, decorativeness. Different from normal plastic products, they have polyvinyl chloride (PVC) blends with chlorinated polyethylene and resin as the main body, plus with a certain percentage of additives, processed by extrusion into profiles. And then be made into window frames by cutting, drilling, welding and other methods, fitted with metal accessories and other products. In order to increase the rigidity of the profile, the inner cavity of the plastic profiles is filled steel liner (stiffener), which increases the bending function, that is why called plastic-steel windows. Since it not only has the characteristics of plastic products, and the physical and chemical properties, anti-aging capability has greatly improved. It not only has the basic functions of windows, its decoration can also be comparable with aluminum doors and windows, and has thermal insulation properties, so that the room is more comfortable, quieter, and more modern. Also it has acid-resistance, alkali-resistance, corrosion-resistance, dust-proof, fire-retardant self-extinguishing, high strength, deformation, color harmony and other advantages. The device don’t need anti-corrosion paint, and its durability, its air tightness, water tightness are 2-5 times of similar doors and windows. According to calculation by experts, in northern China where 15% of residential buildings using steel doors and windows, we can save 140,000 tons of coal, 130 million degrees electricity,and 65,000 tons of steel.
