"The production process of aluminum alloy doors is relatively simple, many small manufacturers can produce, but the quality is mainly in the production process is fine." Aluminum alloy door experts, the level of welding technology reflects the quality of aluminum alloy doors. High-quality aluminum alloy doors, fine processing, welding, especially some stitching parts are very flat. Inferior aluminum alloy doors and windows, blindly choose aluminum profiles and specifications, processing rough and shoddy, door frame corners and other positions can not be flattened, and sometimes even larger gaps.
When purchasing, consumers should pay special attention to check for welding defects, such as open welding and leakage welding. Also check whether the door leaf and the door frame are closed, whether the gap is uniform, and whether the opening is flexible.
Reminder: After the customer checks the welding process of the aluminum alloy door, it is necessary to carefully check whether the paint surface of the product is bright and the texture is clear. Note that the paint surface cannot have obvious scratches, bubbles and other defects.