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Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (~3 × 10−6 K−1 at 20 °C), making them resistant to thermal shock, more so than any other common glass. Such glass is less subject to thermal stress and is commonly used for the construction of reagent bottles. Borosilicate glass is sold under such trade names as Borcam, Borosil, DURAN, Suprax, Simax, BSA 60, BSC 51 (By NIPRO), Heatex, Endural, Schott, Refmex, Kimble, and some (but not all) items sold under the trade name Pyrex.





| Property | Typical Values | Property | Typical Values |
| Silicon content | More than 80% | Transmittance | 92% |
| Annealing temperature | 560 ℃ | Elastic modulus | 76KNmm - 2 |
| Softening temperature | 820 ℃ | strain point | 516℃ |
| Refractive index | 1.47 | Density | 2.23gcm |
| Specific heat | 0.9jg - 1K - 1 | Thermal conductivity | 1.2Wm - 1K |



Mid. Order: 15 Tons more quatities, more cheaper FOB Price: US $ 8.5-8.65/Carton
Mid. Order: 15 Tons more quatities, more cheaper FOB Price: US $ 8.5-8.65/Carton
Mid. Order: 15 Tons more quatities, more cheaper FOB Price: US $ 8.5-8.65/Carton



Mid. Order: 15 Tons more quatities, more cheaper FOB Price: US $ 8.5-8.65/Carton
Mid. Order: 15 Tons more quatities, more cheaper FOB Price: US $ 8.5-8.65/Carton
Mid. Order: 15 Tons more quatities, more cheaper FOB Price: US $ 8.5-8.65/Carton



Semi-Automatic PET Bottle Blowing Machine Bottle Making Machine Bottle Moulding Machine.
Semi-Automatic PET Bottle Blowing Machine Bottle Making Machine Bottle Moulding Machine.
Semi-Automatic PET Bottle Blowing Machine Bottle Making Machine Bottle Moulding Machine.




The quartz material will be stuck on the board and be absorbed by electromagnet on the workbench. In order to cut the material, the workbench rises slowly by electromotor and the blade revolves high-speed and repeated. According to the requirement of the customer, the machine can cut the whole material into 1-1000mm wafer. The advantage of this step is stable size and low defective percentage.
The surface of the material can be processed into plane, vertical plane, inclined plane and different kinds of groove or formed surface by the rotary milling cutter of the machine. It also can be made into spiral groove, cam and the complex thread and spline shaft.


The parallel misalignment of the product can reach 0.01millimeters after cutting. The main reason to get accurate product is that the computer can control this machine.
The quartz product’s edge or shape will be changed smooth and rounded. Because of this, it is not easy to broke and damage with eternal force for the quartz piece or other quartz product.


different kinds of lapping machines is chosen by producing different sizes, shapes, and accuracies products. In fact, it is not worry about the resistance of the grinding to damage the product. The reason is that the resistance is too small and it grides two sides evenly. The benefit of this step is high production efficiency.
The traditional manual grinding is took by the high accuracy quartz component from the customer. The technician of our factory own excellent workmanship and skillful technique. They can control the accuracy deviation under 0.07mm.


Workers is polishing the quartz material with polishing wheels. Polishing wheels are composed of canvases, felts and leather. The quartz piece is clamped by metal disks with polishing agent. The quartz piece become dazzling light after the speed of 20m/s..
The high quality is reputation guaranteed of our factory. There is a set of scientific and rigorous quality control system in our factory no matter the raw material, semi-finish product and finished product. The final purpose is to satisfy the requirement of the customer.


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