glass tempering furnace use fused silica Ceramic roller tube

We mainly produce alumina tubes, rods and various industrial ceramic parts, which are mainly used in thermalcouple temperature,

We are an ISO certified Factory, specializing in production of 

engineering ceramic, industrial ceramics and electric ceramic products. 

Main material include:

Corundum: 95% alumina, 99% alumina, 99.7% alumina

Alumina: 85% alumina

Mullite: 75% alumina

Chemical Ceramic: 40% alumina

Magnesia: 98% magnesia, 99.5% magnesia

Fused silica/Quartz glass heating elements

Our products include:

 high temperature roller tube for furnace and kiln ,

 thermocouple protection tube,

 muti-bore insulation tube, 

 ceramic roller & rod, 

 ceramic crucible and boat,

 wear resistant ceramic tiles and balls.

Custom products are available from us.

With more than 10 years experiences, our ceramic products enjoy a high 

reputation for the high quality, stable performance, longer working life ,both at home and abroad. 

If you are interested,please contact us for more details and attractive price.

Main performance index
Serial number	performance index	Measuring unit	High purity alumina	Alumina	High alumina
1	Al2O3	%	99.7	99.3	85
2	SiO2	%	less than0.1	—	—
3	Density	g/cm3	3.95	3.88	3.2
4	Wter absorption	%	0	0.01	0.2
5	Cld compressive strength	MPa	450	350	200
6	20 degree Celsius leak rates	Torr/L.sec	less than10-11	less than10-11	less than10-11
7	Twisting in high temperature	mm	1700 degree Celsius 0.2 allowance	1600 degree Celsius 0.2  allowance	1400 degree Celsius 0.2 allowance
8	Bonding in high temperature		1700 degree  Celsius non-caked	1600 degree Celsius non-caked	1400 degree Celsius non-caked
9	20—1000 degree Celsius coefficient of	mm.10-6/degree Celsius.m	8.6	8.2	8.2
	thermal expansion
10	Thermal conductivity	W/m.k	25	25	25
11	Electric insulation strength	KV/mm	20	20	15
12	20 degree Celsius direct current	Ohm/cm	1014	1014	1014
	insulating resistance
13	High-temperature	1000 degree Celsius MΩ	≥0.08	≥0.08	≥0.08
	insulation resistance	1300 degree Celsius MΩ	≥0.02	≥0.02	≥0.02
14	Thermal shock resistance		1550 degree  Celsius 6 times not racked	1550 degree Celsius 6  times not cracked	1300 degree Celsius 3 times not cracked
15	Maximum service temperature	degree Celsius	1900	1800

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glass tempering furnace use fused silica Ceramic roller tube