Aluminum alloy door and window material identification method
1. Check whether the profile thickness of aluminum alloy door and window material is in line with the model. If the profile cannot reach the wall thickness, it cannot be used.
2. Check whether the aluminum alloy door and window material (6 meters long) has obvious twisting and twisting. If the twist is so severe that it is difficult to recover, it cannot be used anymore.
3. Check whether the surface of the profile is flat; whether there is white spots, black spots; whether there are cracks, burrs, peeling; whether there are obvious scratches, bumps and so on.
4. The same aluminum alloy door and window material must not have shades of different shades; put a few pieces together, and the color difference should not be used.
5. The surface of the aluminum alloy door and window material is smoothed with a smooth hard object, leaving a white mark. If it can be wiped off by hand, the oxide film is not scratched off; if it cannot be wiped off by hand, it means that the oxide film has been scraped off and the quality of the material is problematic.
Company Name: Ninghai Longxiang Aluminum Co., Ltd. Address: No.2, Zhongshan East Road, Shuangshan Village, Ningbo, Ningbo, Zhejiang, China (315600)
Tel: 0574-65177738-
Contact person: Mr. Yuan Enterprise Website: http://longxiang.alu.cn