Application
Metal halide ultraviolet sleeve tube for plant grow lamp.

Product Feature
A doped transparent quartz tube, which has a softening point about 50℃lower than conventional transparent quartz tube, absorbs UV-A / B / C, filters out almost all ultraviolet rays, and has a very low level of OH control ( can be less than 2 ppm). And Extend lamp life.
Product Type
PQ 321 ,standard UV block quartz tube
Typical Size (Unit:mm)
OD Range | OD Tolerance | Wall Thickness | WT Tolerance | Out of Round | Siding | Bow |
3<Ф≤10 | ±0.1 | 1~2.0 | ±15% | 2% | 12% | 0.15% |
10<Ф≤20 | ±0.2 | 1~2.5 | ±15% | 1.25% | 12% | 0.15% |
20<Ф≤30 | ±0.25 | 1.5~3.0 | ±15% | 1.25% | 12% | 0.15% |
30<Ф≤40 | ±0.35 | 1.5~4.0 | ±15% | 1.25% | 12% | 0.15% |
40<Ф≤50 | ±0.2 | 2.0~4.0 | ±15% | 1.25% | 12% | 0.15% |
50<Ф≤60 | ±0.5 | 2.5~5.0 | ±15% | 1.25% | 12% | 0.15% |
60<Ф≤80 | ±0.7 | 3.0~5.5 | ±15% | 1.25% | 12% | 0.15% |
80<Ф≤100 | ±0.8 | 3.0~10.0 | ±15% | 1.25% | 12% | 0.15% |
Remark: Customized size is available
Physical & Chemical Properties
1) Mechanical & Thermal Properties
Density (20℃kg/m3) | Thermal Expansion (200-300℃℃-1) | Softening Point(℃) | Annealing Point (℃) | Strain Point (℃) |
2.1*103 | 5.8*10-7 | 1630 | 1180 | 1070 |
2) Impurity Value (Unit: ppm)
Impurity | Na | K | Mg | Li | Ca | Fe | Al | Ti | Cu |
Typical value | 5.0 | 5.0 | 1.0 | 1.0 | 3.0 | 1.5 | 20 | 3.0 | 0.5 |
Remark: The figures above only indicate typical values, excluding doped elements.
3) OH Content (Unit:ppm)
Typical Value without Baking | After baking |
130 | <10,<20 |
4) Optical Properties

Our Main Product

Main Application

Company Advantage
● Doctor-post work station and top quartz inspection lab;
● Self innovated production process and equipment;
● Own of important National patents and core technologies;
● Purity of SiO2 can reach to 99.995-99.999%;
● Applied into lighting, solar, optics, optical fiber, semiconductor and etc;
● Cutting edge of melting technology;
● World famous quartz glass supplier;

CNAS Certified Laboratory


Production Main Facilities



FAQ
Q1. What is your good strength?
A: We are an expert of glass products for both standard and custom designs per drawing.
Q2. How can I get some samples?
A: Free sample when have stock size. And need to charge when custom manufacture for you.
Q3. How can I trust you?
A:We have more than 25 years experience to own good reputation and export to around 100 countries.
Q4. Terms of payment?
A: L/C, D/A, D/P,T/T, Western Union, Money Gram are all ok, but maybe some of these are limited for special countries.A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.
Customers Visiting & Exhibition Moment

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