Plastic steel (UPVC) Doors

The advantages of plastic steel are good sound insulation, heat insulation, fire resistance, air tightness, water tightness, corrosion resistance, heat preservation and so on. The shortage is that is is the PVC plastic profile , the surface will turn yellow and the shape of the window will change after a long time, the service life will be 20-30 years.

The cost performance of the plastic steel is the main reason of its hot selling. Plastic steel doors and windows are using polyvinyl chloride (often called PVC) resin as the main raw material, plus a certain proportion of stabilizers, coloring agents, filling agents, ultraviolet absorbent, and so on, through extrusion molding material, and then through cutting, welding or snails to make doors and windows frame fans, fitted with sealant strips, hair Bar, hardware and so on, at the same time to enhance the rigidity of the profile, more than a certain length of the section of the cavity need to fill steel lining (reinforcement), thus this kind of doors and windows shall be called plastic steel doors and windows. Therefore, the price of the plastic steel window is a little more expensive than the other types of plastic steel windows. In addition, the process of making the plastic steel doors and windows has its own process, and the construction scheme of the plastic steel window is also quite different from that of the other.

The plastic steel doors and windows without steel liner are only considered as plastic doors and windows. The real plastic steel windows are lined with steel.The anti wind pressure performance of the plastic steel doors and windows mainly depends on the specifications of the reinforced steel lining in the cavity. The larger the section size of the lining steel, the greater the thickness, then the greater the moment of inertia, the better the anti wind pressure performance. The steel lining cavity is larger and can be loaded with larger steel lining. Under the same thickness of steel lining, the moment of inertia is relatively large, so it has relatively better wind resistance performance. Excellent wind resistance makes it suitable to use in high-rise buildings, and is not easy to be damaged and deformed.

The industry standard "non plasticized PVC plastic window" JG/T140-2005 (door standard is JGT180-2005), third pages sixth section 6.2.1 of the regulation is "the minimum wall thickness of reinforced steel should not be less than 1.5mm". Our company mostly adopts wall thickness =1.5mm for windows, wall thickness =2.0mm for doors, lining steel surface is treated with cold galvanizing.