grey quartz glass tube 
1, 1000 long time work
2, high purity
3, Resistance 1100 degree
4, no bubble no airline
5, ISO 9001-2000

Advantage of the quartz glass tube:
1. High temperature resistant, 1100 degree.
2. Corrosion-resistant
3. Good thermal stability
4. Good transparency for light
5. Good electrical insulation




Quartz tube with grey color, it can stop visible light for heating lamp,so it very suit for make heating tube for heating.

If you are interested,please feel free to contact us!