• Lianyungang Shengfan Quartz Product Co., Ltd
    The Quartz Tube has very high quality, looking forward further cooperation
  • Lianyungang Shengfan Quartz Product Co., Ltd
    The products are fully suitable for our school's lab.
  • Lianyungang Shengfan Quartz Product Co., Ltd
    satisfied with the products,and delivery in time.
Contact Person : Sharon Zhao
Phone Number : +8615161325985
Whatsapp : +8615161325985

Clear Surface Quartz Tube Vacuum Flange 80% Large UV Transmittance

Place of Origin China
Brand Name shengfan
Certification ISO9001
Model Number QF-1
Minimum Order Quantity 10
Price Negotiable
Packaging Details plastic bubble/ polystyrene foam sheet/ carton/ wooden pallet
Delivery Time 7-15 work days
Payment Terms L/C, T/T
Supply Ability 10,000 pieces/ month

Contact me for free samples and coupons.

Whatsapp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

Product Details
Product Name Quartz Tube Flange Material Sio2
Size Customized Light Transmittance >92%
Density 2.2g/cm3 Hardness Morse 6.5
Working Temperature 1100℃ Electrical Resistivity 7x107 Ohm Cm (350°C)
High Light

quartz tube heating element


vertical tube flange

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Product Description

Product description:

Fused clear silica quartz glass flange is made of high purity quartz sand with excellent thermal shock stability and high transmittance.

It is widely used in electric light/ laser/ lenses/optical instrument/high temperature window.

The deep processing would be done according to client's requirements, like neat cutting, punching,finish milling, fire polish, welding, bending, sealing, polished and so on. We have rich experience in quartz flange welding to make sure the welding products dimensions.

Over the years,the company constantly introduce high-precision processing equipment,like CNC / Laser equipment / glass milling and grinding machine to insure the accuracy of the products.


Product selling point:

① High Temperature Resistance:

The hardening point temperature of quartz glass is about 1730℃, and it can be used for a long time at 1100℃, with the temperature up to 1450℃.

② corrosion resistance:
Except for hydrofluoric acid, quartz glass does not react with other acid substances. Its acid resistance is 30 times that of ceramics and 150 times that of stainless steel, especially its chemical stability at low temperature, which cannot be compared with other engineering materials.

③ Good Thermal Stability:
Quartz glass has a small thermal shrinkage coefficient and can withstand drastic temperature changes. Quartz glass can be heated to 1100℃ or so without bursting when it is put into normal temperature water.

④Good pervious to light:
Quartz glass has good transmittance in the spectral band from violet inner line to red inner line, the visible light transmittance is more than 93%, and the transmittance in ultraviolet spectrum is more than 80%.

⑤Good electrical insulation:
Quartz glass resistance value commensurate with ordinary glass ten thousand times, is a good electrical insulation material, even at low temperature has good electrical properties.


Shengfan Quartz plate characteristic
SIO2 99.9%
Density 2.2(g/cm³)
Degree of hardness moh’ scale 6.6
Melting point 1732℃
Working temperature 1100℃
Max temperature can reach in a short time 1450℃
Visible light transmittance Above 93%
UV spectral region transmittance 80%
Annealing point 1180℃
Softening point 1630℃
Strain point 1100℃


  JGS1(ZS-1) JGS2(ZS-2) JGS3(HS)
Spectral characteristics 180-2500nm 200-2500nm 260-3500nm
The average transmittance 90% 85% 85%
Bubble class 0 2 2
Birefringence 1-2 1-2 1-2
Grain structure 1 2 2
Fringe 1-2 2 2
Uniformity 1-2 2 2
Fluorescence 1 2 2
Radiation Performance Does not change clolor Sight discoloration Change color


Clear Surface Quartz Tube Vacuum Flange 80% Large UV Transmittance 0

Clear Surface Quartz Tube Vacuum Flange 80% Large UV Transmittance 1

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Company profile:

Lianyungang Shengfan Quartz Product Factory is a professional manufacture specialized in research and development of quartz plate,quartz tube,quartz flange,quartz ring,cuvette and quartz instrument. The company is located in China Crystal Capital - Donghai City, Jiangsu Prov., China. 70 km far from Lianyungang port, convenient transportation.Covering an area of 1000 square meters,we now have over 30 employees,an annual sales figure exceeding USD 5.2 million.

With the philosophy of Technology Orientation, Quality First,Integrity and Responsibility,Sustainable Operation, the company dedicates to establish an international enterprise with standard and sustainable operation capability.

Clear Surface Quartz Tube Vacuum Flange 80% Large UV Transmittance 4