Coefficient of Expansion(20°C~350°C) | 5.5*10-7/°C |
Softening Point( viscosity) | 1750°C |
Annealing Point | 1215°C |
Deformation Temperature(long time heat retaining) | 1120°C |
Thermal Conductivity(W/m°C,20°C) | 1.4 |
Specific Heat(J/kg,20°C) | 670 |
Material | Silicon Dioxide (Natural Quartz ) |
Surface | No Air Bubble ,no process |
PPM grade | Controlled 10/20/100 PPM |
Thickness | 0.5 MM-100 MM |
Application | 1.Windows |
Qingdao Vatti Glass Co.,Ltd is a highly professional manufacturer and supplier of glass and glass products,main dealing with tempered glass, insulated glass, laminated glass, solar glass, ceramic glass, borosilicate glass,quartz glass,fireproof glass, borosilicate glass pyrex / borosilicate pyrex gauge glass/ heat resistant borosilicate glass / high pressure boiler sight glass / high purity quartz glass /quartz crystal glass/quartz glass sheet quartz glass disc/quartz glass uv light/quartz optical glass windows/round quartz glass disc .
We have independent import and export rights, the thickness tolerance can reach the national standards. Owing to strict management, super quality and good service, our glass has got good reputation from the home market and also has been exported to many foreign countries, such as Germany, Italy, England, America, Africa, Asia countries and so on.
We are committed to providing better and better products and services,and we have been working hard for it!