Aluminum windows and doors sliding sash advantages: simple, beautiful, big pieces of window glass block big vision, lighting rate, Cabo convenient, flexible, safe and reliable, long life, turned in a plane, take up less space, easy to install screens. Currently used most is sliding sash. Aluminum windows and doors sliding windows Disadvantages: two windows can not be opened up only half open, airy relatively worse; sometimes also somewhat less tightness. Sliding Window: left and right, up and down sliding two kinds. Sash windows have not occupy the advantages of aluminum doors feature interior space, the appearance of beautiful, affordable, sealing better. High-grade rails, gently push, open and flexible. Coupled with chunks of glass, not only to increase the indoor lighting, but also improve the overall appearance of the building. Force sash good state, not damaged, but the ventilation area subject to certain restrictions. Aspects of quality aluminum windows and doors can from raw materials (aluminum) selection, aluminum surface treatment and internal processing quality, the price of aluminum doors and windows, etc. to make roughly judge. First, look at the price. In general, high-quality aluminum windows and doors aluminum doors due to the characteristics of high production costs, the price to be higher than the low-grade aluminum windows and doors around 30%. Some have only 0.6-0.8 mm wall thickness made of aluminum alloy doors and windows, tensile strength and yield strength significantly below the relevant national standards, the use of very safe. In addition, the processing of aluminum windows and doors are more self-employed, they do not know the structural characteristics and properties of aluminum windows and doors. In order to reduce the cost of cutting corners aluminum door styles, shoddy, larger product hazards, generally should not be used. The best selection of regular aluminum windows and doors manufacturer of the product. A special point: the national standard profile thickness is 1.4mm, if the vendor is selected 1.2mm or 1.0mm wall thickness even thinner material, then aluminum doors, are of substandard products, please you choose Note that when you purchase. Second, look at the material in the material selected materials have six main areas can refer to: ⒈ Thickness: aluminum sliding doors and windows, 70 series, 90 series of two kinds, residential interior aluminum sliding doors with 70 series can be. Common aluminum sliding windows, 55 series, 60 series, 70 series, 90 series of four. Selection should be based on the size of the window opening and local pressure value may be used as enclosed balcony aluminum sliding windows should not be less than 70 series. ⒉ strength: Tensile strength should reach 157 newtons per square millimeter, the yield strength to reach 108 newtons per square millimeter. When you purchase, moderately curved profiles, let go should be able to recover shape. ⒊ Chroma: aluminum alloy with a color should be the same as the color clear, that not buy. ⒋ flatness: Check the surface of aluminum profiles, there should be no sag or bulge. ⒌ Gloss: aluminum windows and doors opening to avoid bubbles optional surface (white dots) and ash (black dots), cracks, burrs, etc. from the obvious defects of the skin sections. ⒍ oxidation degree: the oxide film thickness should reach 10 microns. When you purchase scratching the surface of what in the profile to see if it can wipe the surface of the oxide film. Gorgeous windows and doors, aluminum doors [function], provided by the gorgeous windows and doors aluminum doors. Search for "Shijiazhuang sun room, bridge aluminum doors and windows, shower room, glass partition" reliable supplier network operators choose to have the whole alliance certification: Shijiazhuang gorgeous Door (www.sjzygf.com), trustworthiness and reliability, now "Business League Support" page click on the live chat with us now!