The following are some methods to distinguish whether it is broken bridge aluminium:

1. Check the material of the insulation strip

      The key of broken bridge aluminium lies in the insulation strip. High-quality insulation strips are generally made of nylon material (PA66), which has excellent weather resistance and stability. Burn it with a lighter. The one that is not easy to ignite is usually nylon material; while the one that is easy to burn may be PVC material, then it is not real broken bridge aluminium.

      For example, if black smoke and a pungent smell come out from the insulation strip during burning, it is most likely not a high-quality insulation strip of broken bridge aluminium.

2. Observe the profile structure

      The profile of broken bridge aluminium has an obvious broken bridge structure, that is, it is disconnected by the insulation strip to form two parts, inside and outside. It can be confirmed by observing the cross-section of the door and window.

      For instance, if the aluminium material is seen to be completely and tightly separated by the insulation strip, it is more likely to be broken bridge aluminium.

3. Measure the wall thickness of the aluminium material

      National standards stipulate that the wall thickness of the aluminium material for broken bridge aluminium doors and windows should not be less than 1.4 mm. Measure with professional measuring tools. If it meets the standard, it is more likely to be broken bridge aluminium.

      For example, if it is found that the wall thickness is too thin during measurement, it is most likely not a qualified broken bridge aluminium product.

4. Check the quality of the hardware

      Real broken bridge aluminium doors and windows are often equipped with well-known brands and high-quality hardware accessories, with fine workmanship and smooth opening and closing.

      Like some well-known hardware brands such as Kinlong and Guoqiang, if there is a clear brand logo and a good texture on the hardware accessories, it is helpful to judge it as broken bridge aluminium.

5. Understand the price range

      Due to the high cost of materials and craftsmanship, the price of broken bridge aluminium doors and windows is usually not too low. If the price is significantly lower than the average market level, there may be problems.

      However, it should be noted that price is not the only criterion for judgment, and other aspects need to be considered comprehensively.

6. Consult professionals

      You can consult experienced door and window installation masters, designers or experts in related industries and ask them to make a judgment through on-site inspection.

7. Inspect the performance of the door and window

      Broken bridge aluminium doors and windows perform excellently in terms of sound insulation, heat insulation, air tightness and water tightness. You can feel the sound insulation effect after closing the door and window on the spot, and touch it with your hand to feel the temperature isolation.

      For example, if you close the door and window in a noisy environment and obviously feel the sound weakened, it indicates that its sound insulation performance is good and it is more likely to be broken bridge aluminium.

Through the comprehensive application of the above multiple methods, it can be more accurately distinguished whether it is broken bridge aluminium.