Maideli supplys various quartz products such as quartz sheet ,quartz tube ,quartz crucible ,etc…
The products in our company are produced from two kinds of production : electric melting and electric -arc production . Company provides both the ordinary pure products ( SiO2 >99.5% ) and the high pure products (SiO2≥99.99%) .No transparence is because of the large numer of bubbles with sizes 0.003-0.3mm in the glass ,and the small bubbles result in rays scattering .Within the bubbles there are 60% CO ;10% CO2; 8% and 22% N2 . Bubbles are good for the glass in heat isolation , thermal stability , infra-red absorption and radiation .
Opaque silica glass is widely used in the fields of metallurgy ,chemical industry ,building material , semiconductor , fluorescent powder of color TV , optical glass ,infra-red radiation elemtents and national defence (Such as the purifying nuclear silica glass reactor ).
Our company produces following opaque silica glass products :
A. Opaque silica glass container ;
B. Opaque silica glass plates;
C. Opaque silica glass linings ,bell jar and reactor ;
D. Opaque silica glass tubes;
E. Opaque silica glass bricks ;
F. Opaque silica glass trays .
Sizes and tolerance of opaque silica straight tubes :
| Outside dia | Outside dia tolerance | Wall thickness | Wall thickness tolerance | Wall thickness tolerance at the same section | Max length |
| 75-99 | ±1.0 | 2.5-10 | ±1.0 | 1.0 | 3500 |
| 100-149 | ±1.5 | 5-25 | ±1.0 | 1.0 | 1500 |
| 150-149 | ±2.0 | 5-25 | ±2.0 | 2.0 | 1500 |
| 200-249 | ±2.5 | 10-25 | ±3.0 | 3.0 | 1300 |
| 250-299 | ±3.0 | 10-25 | ±3.0 | 3.0 | 1000 |
| 300-349 | ±3.0 | 10-25 | ±3.0 | 3.0 | 1000 |
| 350-399 | ±3.5 | 25-50 | ±4.0 | 4.0 | 1000 |
| 400-424 | ±3.5 | 25-50 | ±4.0 | 4.0 | 800 |
| 425-459 | ±4.0 | 25-50 | ±5.0 | 5.0 | 800 |
| 460-500 | ±5.0 | 25-50 | ±5.0 | 5.0 | 800 |
Size and tolerance of opaque silica glass cone tubes :
(H) Height and the tolerance | Outside dia and the tolerance | (S) Wall thickness and the tolerance | |
Big end | Small end | ||
500±5.0 | 300±3.0 | 270±3.0 | 20±5.0 |
610±5.0 | 370±3.0 | 270±3.0 | 20±5.0 |
660±5.0 | 380±3.0 | 270±3.0 | 20±5.0 |
Size and tolerance of opaque silica glass brick
Length | Width | Thickness | Tolerance | Length | Width | Thickness | Tolerance | |
200 | 150-200 | 250-300 | ±5.0 | 700 | 150-200 | 250-300 | ±5.0 | |
300 | 150-200 | 250-300 | ±5.0 | 800 | 150-200 | 250-300 | ±5.0 | |
400 | 150-200 | 250-300 | ±5.0 | 900 | 150-200 | 250-300 | ±5.0 | |
500 | 150-200 | 250-300 | ±5.0 | 1000 | 150-200 | 250-300 | ±5.0 | |
600 | 150-200 | 250-300 | ±5.0 |
