1. KFC door profiles Thickness: aluminum sliding doors, 70 series, 90 series of two kinds. Used as enclosed balcony aluminum sliding windows should be not less than 70 series. 2. KFC door profiles strength: tensile strength should reach 157 Newtons per square millimeter, the yield strength to reach 108 newtons per square millimeter. When you purchase, can be hand moderately curved profiles, let go after the state should be able to recover. 3. KFC door profiles color: aluminum profiles with a color should be consistent, such as color obviously, that should not buy. 4. KFC door profiles flatness: aluminum profile surface inspection, should not sag or bulge. 5. KFC door profiles Gloss: aluminum windows and doors opening to avoid the purchase of surface bubbles (white dots) and ash (black spots), as well as cracks, burrs, from the obvious defects of the skin, such as profiles. 6. KFC door profiles oxidation degree: the oxide film thickness should reach 10 microns. When you purchase can be drawn in the profile surface light to see if it is aluminum oxide film surface trough Corner connection KFC rose emergency opening doors, connections using high-frequency TIG welding of aluminum, making the structure more solid connection, impact, not easily deformed, longer service life. Door seal grooves increase KFC doors, installation of doors seam sealing tops, which play a wind, dust, noise KFC door profiles, better sealing effect. Glass with tempered glass, higher strength, more secure. Installation of door closers and rolling bearing type hinge, so that the doors can open automatically with ease and without any noise and collisions. This door clean lines and smooth, stylish and elegant, eye-catching atmosphere, is the replacement of choice for modern commercial doors. KFC door accessories | Qu Fuyao Door Industry | Zhengzhou KFC door by Linqu Fuyao metallwarenfabrik. Linqu Fuyao Metal Products (www.lqfymy.com) (www.lqfymy.com) Shandong Weifang, door and window hardware leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In Qu Fuyao door industry leadership with the staff warmly welcome all inquiries negotiations to create Qu Fuyao door industry a better future.