When choosing hollow glass, we should pay attention to the following aspects.

One, look at the sign to check the certificate

Construction (safety) insulating glass is a piece of glass made of insulating glass, which is made of 3C certified safety glass (tempered glass or laminated glass). In 2006, construction (safety) insulating glass was included in the mandatory certification product of safety glass. Since the implementation of self certification, many manufacturing enterprises have obtained 3C certificates through product certification. The enterprise should print or paste the 3C logo on the body of the product on sale, or add the 3C logo to the smallest outer packing and the accompanying document (such as the certificate of qualification). When choosing a product, first check whether there is a 3C sign, and see if the production enterprise through the network, according to the enterprise information, factory number, or product certification certificate, has passed the mandatory product certification (with 3C certificate and valid), the model specification of the product is in the scope of the enterprise's ability to pass the compulsory certification. Within, the certificate status is valid.

Two. Look at the appearance quality

Look at the appearance quality of the product. There should be no obstruction to the perspective, stains and sealant splashing. The sealant or adhesive strip should be evenly and continuously coated and firmly adhered to the surface of the glass. No air passage or bubble should appear. The width and depth of sealant should not be less than GB/T11944-2002 standard.

Three, send samples to qualified testing institutions for testing, confirm the quality of products.

The key raw materials and production processes of insulating glass products are more. The quality of raw materials and the control level of production processes affect the final quality of products. Moreover, the key performance of insulating glass can not be identified from the appearance of the product. Only by testing and testing can we confirm it. Therefore, it is suggested that when selecting hollow glass, especially large batches, it is necessary to send samples to third party inspection organizations for inspection and screening.

Four. The confirmation of energy saving performance of hollow glass

When the curtain wall glass and building doors and windows are designed, the visible light transmittance, shading coefficient, heat transfer coefficient, dew point and other performance parameters of the hollow glass are required. In order to improve the energy saving effect of insulating glass, people choose different types of coated glass and stained glass to synthesize insulating glass. The raw glass and the structure of insulating glass are different, and the energy saving performance of the products is different. Therefore, before choosing the insulating glass, we must first send the glass to the qualified third party inspection organization for testing and confirmation, so as to ensure the performance of the selected products conforms to the energy saving design requirements or the performance requirements of the energy-saving building window. When choosing high permeability Low-E insulating glass, the coating surface is placed inside the inner side of the spacer, so it is difficult to be identified and detected. Therefore, the products provided by the hollow glass suppliers must be sampled and examined.

Five. Transport, storage and use of hollow glass 
Hollow glass is usually packed in wooden cases or assembled frames. The glass is separated by plastic or paper. The glass is filled with soft materials between the glass and the package to prevent the glass scratching. Insulating glass should be placed vertically in a dry room, and external force should be avoided when handling and using. When cleaning glass, be careful not to scratch or scratch the surface of glass.