China Two ends open transparent tube glass quartz cylinder quartz glass tube

Product Description
Quartz glass tube


Outer Diameter
1.50-450mm
Material 
high purity >99.95%(SiO2) 
Wall Thickness
0.30-20mm
Length
10-4500mm
Shape
Straight, C, U,Round,Pear,spiral,domed, closed
Softening Point
1680℃
Annealing Point
1210℃
Strain Point
1120℃
Density
2.2g/cm3
Hardness
5.5-6.50Mohs'
Design Tensile Strength
4.80x 107 N/m^2
Design Compressive Strength
1.10x 109 N/m^2
Cofficient Of Thermal
Expansion(20-320℃)
5.70x 10-7cm/cm.℃
Thermal Conductivity(20℃)
1.40W/m.℃
Specific Heat(20℃)
670J/Kg.℃
Electrical Resistivity(350℃)
7x 107ohm.cm
Dielectric Constant
3.75
Dielectric Strength
5x107V/m
Product Paramenters



SiO2
99.997%
Density
2.2 g/cm3
Degree of hardness moh' scale
6.6 Pa
Melting point
1732°C
Working temperature
1100°C
Max temperature can reach in a short time
1450°C
Acid tolerance
30 times than Ceramics,150 times than stainless steel
Visible light transmittance
above 93%
UV spectral region transmittance
80%
Resistance value
10000 times than ordinary glass
Annealing point
1180°C
Softening point
1630°C
Strain point
1100°C

Details Images


Usage


Widely used in semiconductor, lighting and electric heating industries.
Factory
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FAQ
Q:Can You Provied Free Sample?
a:We provide existing samples for free freight collect for customized samples,we charge fee accord to the cost,after place order,we will return sample fee.
2.Q:How to get in touch with us?
a:TradeMananger on-line-chatting
b:Open one of our products' link and leave a message there,then you should find the contact details.You any questions will be repiled within 24 hours.
3.Q:What is your qty of MOQ?
a:Generally speaking,there is no limit for the minumum order quantity, the minimum order quantity is subject to the demand of our esteemed clients.More bigger quantity,the price is also more cheaper.
4.How to control the quality?
a:Yes,Each products will be inspect by QC department before shipping.
5. What is your terms of payment?
a: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.