- Contact Person : Ms. Liang Sally
- Company Name : Chongqing Haichen Instrument Co., Ltd.
- Tel : 86-023-68261638
- Fax : 86-023-68263202
- Address : Chongqing,Chongqing,No. 5, -1/F, 7 Building, No. 44, Longfeng Third Village, Beibei District
- Country/Region : China
- Zip : 400700
Advanced Industrial Alumina Ceramic Tubes
Related Product Searches:Advanced Industrial Alumina Ceramic Tubes,High Quality,ceramic tubes, corundum ceramic tube
1.Advanced Ceramic Tube for Furnace2.thermocouple protective tube3.high temperature resistant4.two ends open
5.high purity 99.7%
Specifications
It is key material of making thermocouple,widely used in every field of industry and science.
Furnace tube
OD(mm) | 25~30 | 31~40 | 41~50 | 51~60 | 61~70 | 71~80 | 81~90 | 91~100 |
ID(mm) | 19~23 | 24~32 | 33~40 | 41~50 | 51~60 | 61~70 | 71~80 | 81~90 |
L(mm) | 200~1600 | |||||||
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 thermal expansion | mm.10-6/degree Celsius.m | 8.6 | 8.2 | 8.2 |
10 | Thermal conductivity | W/m.k | 25 | 25 | 25 |
11 | Electric insulation strength | KV/mm | 20 | 20 | 15 |
12 | 20 degree Celsius direct current insulating resistance | Ohm/cm | 1014 | 1014 | 1014 |
13 | High-temperature insulation resistance | 1000 degree Celsius MΩ | ≥0.08 | ≥0.08 | ≥0.08 |
1300 degree Celsius MΩ | ≥0.02 | ≥0.02 | ≥0.02 | ||
14 | Thermal shock resistance | 1550 degree Celsius 6 times not cracked | 1550 degree Celsius 6 times not cracked | 1300 degree Celsius 3 times not cracked | |
15 | Maximum service temperature | degree Celsius | 1900 | 1800 | 1400 |
Our company website
http://cqhaichen.en.alibaba.com/index.html
Order guidelines:
1. Model
2. Graduation mark
3. Installation fixed
4. Protecting tube diameter and materials
5. Precision grades
6. Using temperature
7. Length or insert depth
For example:Armoured thermocouple,K Type,I level,Fixed thread,Protection tube GH3030,length 450mm,Insert depth300mm,
WRNK-231,K,L=450*300,IL,Protection tube GH3030.
company website:http://cqhaichen.en.alibaba.com/
Advanced Industrial Alumina Ceramic Tubes