Tempered glass/Reinforced glass is a safety glass. Tempered glass is actually a type of prestressed glass. In order to increase the strength of the glass, chemical or physical methods are usually used to form compressive stress on the surface of the glass. When the glass is subjected to external force, the surface stress is first offset, thereby improving the bearing capacity and enhancing the resistance of the glass itself. Wind pressure, cold and heat, impact and so on. Glass has become the new darling of the home improvement building materials market due to its crystal clear and wind-transparent characteristics. Laminated glass and tempered glass have entered the homes with more solid and safe features. When buying glass building materials, you should pay attention to the following points to avoid buying inferior and fake tempered insulated glass.
1, by light spot
Wear polarized sunglasses to look at the glass. The surface of the tempered glass should show colored streaks. Normal glass is not. Look at the glass with the naked eye under the light. There will be blue spots on the tempered glass.
2, look at the mark inspection certificate
Since the safety glass product certification was carried out in 2003, most of the construction tempering/laminated glass manufacturers in the country have passed the product certification. The company must screen or paste the CCC mark on the product body for sale, or on its smallest outer packaging. The CCC mark is added to the attached documents (such as the certificate of conformity).
When purchasing a product, first check whether there is a CCC mark, and check whether the manufacturer of the product has passed the compulsory product certification (with CCC certificate and valid) according to the company information, factory number or product certification certificate number, etc. Whether the model specification is within the scope of the company’s ability to pass the compulsory certification, and whether the status of the certificate is within the validity period.
3, touch the surface to find the arc
The flatness of the tempered glass will be worse than that of ordinary glass, and the surface of the tempered glass will be touched by hand to have a feeling of unevenness. Observing the longer side of the tempered glass, there will be a certain degree of curvature. Plane tempered glass products in GB15763.2-2005 standard requirements bow bending should not exceed 0.3%, the wave bending should not exceed 0.2%, the two larger tempered glass close together, the curvature will be more obvious.
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