At present, China's paint testing standards are: synthetic emulsion exterior wall coating - GB / T9755-1995; synthetic emulsion interior wall coating - GB / T9756-1995; GB / T18582-2001
For exterior wall architectural coatings, people are more concerned about the aging resistance of the coatings. Because the exterior wall coatings are exposed to the atmosphere, they are subject to severe environmental tests and need to have good aging resistance. The national standard test adopts the method of artificial accelerated aging of xenon lamps. To detect. This method simulates the loss of paint due to changes in the weather environment. The current standard is: 200 hours for qualified products; 250 hours for first-class products. For interior wall architectural coatings, people are most concerned about the scrub resistance of paints. The national standard also adopts the method of artificial accelerated detection. At present, the requirements of China's national standard are ≥300 times.
In addition, the test indicators include the state in the container, workability, film appearance, drying time, alkali resistance, freeze-thaw resistance, and coating temperature resistance and crack elongation.
It should be said that the domestic testing standards are very low, which is much lower than the standards of foreign developed countries. For example, the aging resistance is generally required to be more than 500 hours in foreign countries.
GB18582-2001 (limited amount of harmful substances in interior wall paint)
1. The content of volatile organic compounds (VOC) in the product should be less than 200g/L;
2. During the production process, no compound containing heavy metals should be artificially added. The total content should be less than 90mg/kg (in terms of lead);
3. The polymer of formaldehyde and its formaldehyde should not be artificially added during the production process. The content should be less than 100mg/kg.
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Floor Spring range has been specifically designed to meet most situations where pivoted single or double action doors require positive and consistent operation. Innovation design enables flexibility over a wide range of applications. Designed and manufactured to world class standards ensures the highest possible quality, efficient and reliable performance.
Specification
1. Material: Iron
2. Body Material: Casting iron
3. Cover Material: SUS201/SUS304
4. Suitable for glass door weight: 90-180kg
5. Suitable for glass thickness: 8-12mm
6. Open Angle:90°
7. Certification: CE
8. Must be tempered glass
Floor Spring
Floor Spring,Automatic Floor Spring,Durable Floor Spring,Indoor Floor Spring
Jiangyi Industrial Co., Ltd , https://www.cnjyhardware.com