Product Details

Pyrex glass tube flat bottom

Product Description

Physical properties
SiO2 :	99.99%
Density :	2.2(g/cm3)
Degree of hardness mosh' scale :	6.6
Coefficient of expansion 25--300℃ ℃-1 ( ×10-6 )	0.58
Melting point:	1732°C
Working temperature :	Under 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

Dimension Tolerance(mm)
Designation	OD	WT	Max. Siding	Max. Ovality	Max. Bow
1-3mm	±0.05	±0.05	0.05	0.05	1‰
3-10mm	±0.1	±0.1	0.1	0.15	2‰
10-20mm	±0.2	±0.1	0.1	0.2	2‰
20-30	±0.2	±0.15	0.15	0.2	2‰
30-40	±0.4	±0.15	0.2	0.2	2‰
40-50	±0.5	±0.2	0.25	0.25	2‰
50-65	±0.6	±0.2	0.35	0.25	2.5‰
65-85	±0.8	±0.3	0.45	0.3	2.5‰
85-100	±1	±0.3	0.5	0.5	2.5‰
100-150	±1.5	±0.4	0.5	0.8	3‰
150-200	±2	±0.6	0.6	1	4‰
200-300	±3	±0.8	0.7	2	5‰

Spectral Transmission at 1.0mm Thickness
nm	220	255	280	315	350	380	590	780
%	89	91	93	93	93	93	93.2	93.4

Chemical Composition, unit: PPM
K+Na	Ca	Fe	Al	Mg	Ti	Ba	Li	Cu
<10	<3	<1.5	<20	<1.0	<3.0	<0.2	<1.0	<0.5

Application of standard clear quartz tube: halogen lamp, mercury lamp, single end lamp,automobile lamp,stage lamp, The thermoelectric boiler, The photocopier lamp, Water treatment lamp casing,quartz ware and pipe.

Application of Ultraviolet quartz tube : Single-ended metal halide lamp,automobile metal halide lamp,G12 metal halide lamp, anti-explosion metal halide lamp, High power stage light and so on.

Application of free ozone quartz tube : Kill germs free ozone light,the material of hospital ,family,and public place Ultraviolet kill germs,and water treatment.

Application of quartz rod : Linear light source products, light guide stick, light pipe, Fiber Lighting, Quartz fiber manufacturing,semiconductor silicon wafer, hollow half round.

Application of film coated quartz heater tube: Instant Hot water heater, Alkaline water purifier, Electrothermal heater, Oven heating, Aquarium heater,Screen Printing, Drying, Sealing, Food Warming, Plastic Forming, Laminating.

Application of quartz plate: military industrial complex, machinery, metallurgy, printing and dyeing, optical instruments, high temperature sight glasses, firehole industries such as high temperature and other industries, electric light source equipment, Labortory instrument, chemical apparatus.

Production Flow

General process of quartz tube :End closing-Cutting-Fire polished-Cleaning-Dring-Annealing-Cooling down-Inspecting-Packing