high quality transparent quartz glass tubes with customized dimension
The transparent quartz glass tubes for light source and vacuum instruments produced by our company are widely used in the other industry ,technical fields ,where properties of high temperature proof ,thermal stability ,high chemical stability ,high dielectric are needed .
We have production lines for the following 5 products :
A.Electric-heated continuously melting quartz glass tubes;
B.Vacuum pressure quartz glass tubes;
C.Two steps gas melting and electric-melting quartz glass tubes ;
D. Two steps electric-melting quartz tubes;
According to sizes ,outward appearance ,chemical purity and hydroxyl content ( ministry standard JC/T598-1995) products are divided into:High-class (Class A),first class ( Class B) ,and qualified products ( Class C) .
| Class | Class A | Class B | Class C |
| Al,Fe,Ca,Mg,Ti in total | <50 | <70 | <100 |
| (OH)-1 Content | <= 3 | <=5 | <=10 |
Transparent quartz tube general dimension and tolerance (mm)
| Dimension | OD | Wall | Length | Max siding | Max ovality | Max bow |
| 3~15 | +/-0.50 | +/-0.15 | +/-1.00 | 0.09 | 0.20 | 3‰ |
| 15～50 | +/-0.80 | +/-0.20 | +/-1.00 | 0.10 | 0.20 | 3‰ |
| 50～80 | +/-1.25 | +/-0.30 | +/-1.00 | 0.15 | 0.25 | 3‰ |
| 80～120 | +/-1.60 | +/-0.40 | +/-1.50 | 0.16 | 0.25 | 3‰ |
| 120～180 | +/-2.00 | +/-0.50 | +/-2.00 | 0.50 | 0.30 | 5‰ |
| 180～240 | +/-2.00 | +/-0.70 | +/-2.00 | 0.60 | 2.00 | 5‰ |
| 240～300 | +/-2.50 | +/-0.80 | +/-2.00 | 0.70 | 2.50 | 5‰ |
| >300 | +/-3.00 | +/-1.0 | +/-2.00 | 0.80 | 3.00 | 5‰ |
More severe tolerance can be supplied ,contact sales@mdlmaterials.com to know more details .
