Tubes made of transparent quartz glass

We offer quartz tubes of different diameters and thicknesses made of various types of quartz glass. Typically are available pipes made of the following types of quartz glass (see the properties of the JGS type quartz glass described here):

JGS-2 (UV optical quartz glass). It is an optical quartz glass made by oxyhydrogen flame melting and is suggested for applications in the wavelength range of 220-2500 nm !
Ozone free quartz. It is clear quartz tube doped with Ti. Has a strong ability to prevent dense UV radiation but release no ozone. Ozone-free quartz tubing is clear, with cut surface slight purple. The product blocks wavelength < 220 nm, while transmit over 70% in 253.7 nm. Good for all kinds of germcidal lamps.
UV stop quartz tubes. It is the best materials to prevent UV with best transparent performance. This cerium-added quartz tube can effectively prevent all radiation of UV-B and UV-C ultraviolet and most radiation of UV-A ultraviolet. It can be used to make quartz halogen lamp , gas discharge lamp and other UV lamp-house, which will effectively protect human and object from hurt of ultraviolet and maintain the best efficiency of light transmission.

Typical pipe length is 1240 mm, but usually we deliver it cropped according to customer requirements.

Ozone free quartz tubes - additional information

Chemical composition (ppm by weight, analysis via direct spectrometer reading)

Al	Fe	K	Na	Li	Ca	Mg	Cu	Mn	Pb	B	Cr	OH
25	1.5	2.5	2.5	0.6	2.3	0.5	0.1	0.5	0.01	0.2	0.1	<10

Dimensional tolerance

Range of OD	WT	Siding	Out of Round	Bow/1220mm
5.0 mm ± 0.08	1.0 ± 0.06	10%	1.5 %	2.5 %
12.0 mm ± 0.10	1.0 ± 0.10	10%	1.5 %	2.5 %
15.0 mm ± 0.12	1.0 ± 0.12	15%	1.5 %	2.5 %
17.0 mm ± 0.15	1.0 ± 0.15	15%	1.5 %	2.5 %
18.5 mm ± 0.15	1.0 ± 0.15	15%	1.5 %	2.5 %
19.0 mm ± 0.20	1.0 ± 0.15	15%	1.5 %	2.5 %
25.0 mm ± 0.30	1.0 ± 0.20	15%	1.5 %	2.5 %

OD - outer diameter

WT - wall thickness

Physical properties

Property	Unit	Value
Density (at 20 °C)	kg/m3 *10³	2.2
Ceofficient of expansion (in range 25-300 °C)	1/°C *10^-6	0.56
Softening point	°C	1630
Annealing point	°C	1180
Strain point	°C	1070
Youngs modulus	Pa * 10⁵	7.3

Spectral transmission at 1.0 mm thickness

Wavelength	[nm]	185	<220	230-280	550	590	780
Transmittance	%	0	0	≥85	≥90	≥92	≥92

UV stop quartz tubes - additional information

Chemical composition (ppm by weight, analysis via direct spectrometer reading)

Cr	Ge	Fe	Mg	Ti	Ca	Al	Na	Li	K	OH
<0.5	<0.4	1.5	0.5	2.5	2.3	2.5	2.5	0.36	2.5	1-50

Dimensional tolerance

Range of OD	OD	WT	Siding	Out of Round	Bow/1220mm
<= 6 mm	± 2,0 %	± 10 %	12%	2.0 %	2.5 mm
6 - 15 mm	± 1,25 %	± 8 %	10%	1.5 %	2.5 mm
15 - 20 mm	± 1,25 %	± 10 %	15%	1.5 %	2.5 mm
20 - 25 mm	± 1,25 %	± 10 %	15%	1.5 %	3.0 mm
25 - 30 mm	± 1,35 %	± 12 %	15%	1.5 %	3.0 mm

OD - outer diameter

WT - wall thickness

Physical properties

Property	Unit	Value
Density (at 20 °C)	kg/m3 *10³	2.2
Ceofficient of expansion (in range 25-300 °C)	1/°C *10^-6	0.58
Softening point	°C	1620
Annealing point	°C	1160
Strain point	°C	1060
Youngs modulus	Pa * 10⁵	7.3

Spectral transmission at 1.0 mm thickness

Wavelength	[nm]	<220	230-280	290-330	315	350	380	590	780
Transmittance	%	0	<19	0	15	88	92	93	93

While every attempt has been made to verify the source of the information, no responsibility is accepted for accuracy of data.

Technical glass

Tubes made of transparent quartz glass

Chemical composition (ppm by weight, analysis via direct spectrometer reading)

Dimensional tolerance

Physical properties

Spectral transmission at 1.0 mm thickness

Chemical composition (ppm by weight, analysis via direct spectrometer reading)

Dimensional tolerance

Physical properties

Spectral transmission at 1.0 mm thickness

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