Gongtao company mainly produce alumina tubes, rods and various industrial ceramic parts, which are mainly used in thermalcouple temperature, liquid steel continous temperature, various industrial furnace(containig vacuum furnace, carburizing furnace, wire furnace, atmosphere furnace etc), especially widely used in petrochemical, spinning, electric, instrumentation, mechanical workout, military project etc industry.
Sillimatin 60 Type C 530, Alsint 99.7 Type C 799 and Pythagoras Type C 610, all complying with DIN VDE 0335.
The main applications are in the area of thermal processes. Protection tubes, insulators, radiant tubes, support tubes for electric heaters, beams, profiles, incineration aids and special fabrications.
The Impervious Materials are:
Alsint(Re-crystallised Alumina) is rated to 1700oC
Pythagoras(Aluminous Porcelain) is rated to 1400oC
The Porous Material is:
Sillimantin 60 and is rated at 1350oC
Sillimantin has better thermal shock resistance and is used mainly in furnace tubes, however can be used as an outer protection sheath if thermal shock is critical.
Our items are various and exported to many countries. Welcome to contact us!
Dimension | Outer dia. mm | Inner dia.mm | Length mm | Remark |
| Item |
| Thermocouple protection tube | 7-120 | 1-110 | 10-2000 |
If you need others,we can
customize for you. |
| Insulated tube | Single hole | 2-120 | 1-110 | 10-2000 |
| (inner core) | Double holes | 1-10 | 0.4-2 | 10-2000 |
| Four holes | 2-10 | 0.5-2 | 10-2000 |
Property of material:
| Material | 85 Al2o3 | 90 Al2o3 | 95 Al2o3 | 99 Al2o3 |
| Al2o3 | 85% | 90% | 93% | 99.30% |
| Fe2o3 | ≤ 1.0 | ≤ 0.5 | ≤ 0.5 | ≤ 0.3 |
| Desnsity: g / cm3 | 3.4 | 3.5 | 3.6 | 3.85 |
| Vickers Hardness | ≥ 8.6 | ≥ 8.8 | 9 | 9 |
| Water Absorption:% | ≤ 0.2 | ≤ 0.1 | ≤ 0.085 | ≤ 0.01 |
| Refractoriness:°C | 1580 °C | 1600 °C | 1650 °C | 1800°C |
| Flexural Strength:Mpa | 180 | 200 | 240 | 280 |
Wear Rate( at room temperature,
erosion, 100 grinding)% | ≤ 3 | ≤ 2.5 | ≤ 1 | ≤ 0.5 |
| Feature | Application | Main usage |
| 1.Great mechanical strength |
Electric appliance industry
Automotive industry |
1.Heat treatment furnace
and toughened furnace |
| 2.High softening temperature |
| 3.Good resistance to thermal impact |
| 4.Small thermal expansion coefficient |
Mechanical industry
Engineer industry |
2.Inner liner tube and heating
tube in electric furnace |
| 5.Good chill and abrupt heat properties |
| 6. Resistance to acid and alkali corrosion |
Shanghai Gongtao Ceramics Co., Ltd. is one of the most leading and advanced ceramic material companies in China, integrating the design, manufacture and marketing of high-tech ceramics. Brand name "SHANGTAO" was formed more than 20 years ago. We specialize in Alumina products, Zirconia products, Magnesia products, Silicone Nitride products and Alumina Nitride products. We have developed advanced skills and technologies. Our products are widely used in electricity, information, power, automobile and other fields.
Range of Industrial Ceramics: alumina ceramics, zirconia ceramics, titanium oxide ceramics, silicone carbide ceramics, silicon oxide ceramics, special ceramics, high-frequency ceramics, mullite ceramics, general ceramics, refractory ceramics, electronic ceramics, textile ceramics, high purity alumina crucible, electrical ceramics, etc.
SHANGTAO strictly complies with ISO9001 quality management system. Our products are widely used in aerospace, mining machinery, lift, power, paper making, laboratory, nonferrous metal processing, electronics processing, textile machinery and other industries, SHANGTAO provides wholesale and retail services.
We have the largest stocks in Shanghai, professional manufacturing experience, most complete industrial ceramics, rock bottom price, best service, speedy delivery.
Welcome to contact us for cooperation! Also welcome to visit us!
