• Alumina Corundum Square Tube
  • Alumina Corundum Square Tube
  • Alumina Corundum Square Tube
  • Alumina Corundum Square Tube

Alumina Corundum Square Tube

  • YUNXING
  • China Jinzhou
  • 5-30 Days
  • 5,000-10,000/month(Looking for distributors)
1. High-purity alumina content 99.3% -99.5%, other alumina ceramics 92% -99%. 2. The color of high purity alumina product is milky white, and other products are pink or white. The higher the purity, the more transparent the color. 3. Alumina is a refractory material, the higher the purity, the better the refractory effect 4. After high-purity alumina ceramics are fired and cooled in a 1800-degree high-temperature kiln, the products are not easy to break when they encounter high temperatures. Other ceramics are fired at 1500 ℃ ~ 1800 ℃.

Alumina Corundum Square Tube


My factory looking for distributors




Advantages of Alumina Corundum Square Tube

1.Alumina Corundum Square Tube have a high density, greatly reducing the secondary oxidation of molten steel during the pouring process and reducing the entry of inclusions into the casting model.

2.Alumina Corundum Square Tube has high fire resistance (>1680 * C), corrosion resistance.

3.Good chemical stability, no chemical reaction with the molten metal (iron or steel) of the casting at high temperatures.

4.High thermal strength and good thermoplastic properties can effectively prevent sand flushing and sand inclusion in castings, reducing sand hole defects in castings.

5.The thermal expansion coefficient of Alumina Corundum Square Tube is low and has almost no effect on the shrinkage of the casting.

6.The surface of Alumina Corundum Square Tube is delicate and smooth.



Application of Alumina Corundum Square Tube

1. Metallurgical industry: In the metallurgical industry, Alumina Corundum Square Tube  play a crucial role in high demand applications such as molten metal treatment and high-temperature furnace lining.

2. Chemical processing: Our Alumina Corundum Square Tube  have been proven to be an ideal choice for applications involving corrosive chemicals, acids, and other hazardous substances.

3. Energy and power generation: Whether used in power plants, furnaces, or thermocouple protection tubes, our Alumina Corundum Square Tube  can maximize energy efficiency and ensure reliable performance.

4. Semiconductors and Electronics: Our Alumina Corundum Square Tube  have excellent electrical insulation performance and high density, making them an ideal choice for components, ensuring efficient signal transmission, heat dissipation, and electrical interference prevention.


Alumina Ceramic



We only make high purity alumina ceramics

1. High-purity alumina content 99.3% -99.5%, other alumina ceramics 92% -99%.

2. The color of high purity alumina product is milky white, and other products are pink or white. The higher the purity, the more transparent the color.

3. Alumina is a refractory material, the higher the purity, the better the refractory effect.

4. After high-purity alumina ceramics are fired and cooled in a 1800-degree high-temperature kiln, the products are not easy to break when they encounter high temperatures. Other ceramics are fired at 1500 ℃ ~ 1800 ℃.

5. The volume density of high-purity alumina> 3.92 g / cm3 has a smooth surface and is not easily corroded by chemicals. The bulk density of other ceramics is> 3.70 g / cm3 ~> 3.85 g / cm3.

6. High purity alumina has good hardness and good wear resistance.

7. High purity alumina products have a longer service life.


Alumina Tube(open both ends)(slip casting)  Specification Table:

Number

 SPEC: OD x IDLENG TH MMNumberSPEC: OD x IDLENG TH MM
INCHMM INCHMM
10.197x0.1185x3≤800321.126x0.88628.6x22.5≤1800
20.236x0.1576x4≤1300331.181x0.82730x21
30.250x0.1256.4x3.2341.181x0.90630x23
40.250x0.1576.4x4351.260x0.98432x25
50.250x0.1886.4x4.8361.375x1.12534.9x28.6
60.276x0.1577x4371.378x1.06335x27
70.276x0.1977x5381.496x1.18138x30
80.315x0.1978x5391.575x1.18140x30
90.354x0.2369x6≤1600401.654x1.33942x34
100.375x0.2509.6x6.4411.750x1.50044.5x38.1
110.394x0.23610x6421.811x1.49646x38
120.394x0.27610x7431.875x1.62547.6x41.3
130.433x0.27611x7441.969x1.57550x40
140.472x0.23612x6452.000x1.75050.8x44.5
150.472x0.31512x8462.250x2.00057.2x50.8
160.472x0.35512x9472.283x1.89058x48
170.500x0.25012.7x6.4482.362x1.9660x50
180.500x0.37512.7x9.5492.500x2.25063.5x57.2
190.551x0.39414x10502.559x2.16565x55
200.591x0.39415x10≤1800512.750x2.50069.9x63.5
210.630x0.47216x12522.756x2.36270x60
220.669x0.47217x12532.956x2.56175x65
230.688x0.43717.5x11.1543.000x2.75076x70
240.750x0.51219.1x13553.150x2.67580x68
250.787x0.59120x15563.500x3.12588.9x79.4≤1600
260.866x0.63022x16573.543x3.15090x80
270.866x0.66922x17583.937x3.543100x90
280.945x0.70924x18594.000x3.650101.6x93
291.000x0.75025.4x19.1604.331x3.937110x100≤1500
301.063x0.66927x17614.500x4.125114.3x105
311.063x0.78727x20624.724x4.331120x110


 Insulation tube (extrusion)  Specification Table

            Number               1 Bore tube SPEC: OD x ID         Length MM
                    INCH               MM
1
0.031x0.0110.8x0.3










≤18500

20.039x0.0191x0.5
30.059x0.0241.5x0.6
4
0.079x0.039
2x1
5
0.100x0.0502.5x1.3
60.118x0.0593x1.5
70.118x0.0793x2
80.125x0.0633.2x1.6
90.157x0.0794x2
10
0.197x0.1185x3
110.236x0.1186x3
120.236x0.1576x4
13
0.250x0.1256.4x3.2
140.250x0.1576.4x4
150.250x0.1886.4x4.8
160.276x0.1977x5
17
0.315x0.1978x5
180.354x0.2369x6
19
0.374x0.2509.5x6.35
200.394x0.23610x6
21
0.433x0.27611x7
220.472x0.31512x8


Alumina ceramic performance index  (Notice of Correct in Leakeage Rate)

NO.

Property

Unit

Alumina

1

Al2O3

%

>99.3

2

SiO2

%

3

Density

g/cm3

3.88

4

Water absorption

%

0.01

5

Compressive strength

MPa

2300

6

20℃ leakage rates

TorrL/sec

>10-11=1.33322×10-12Pam3/sec

7

Twisting in high temperature

mm

0.2 allowed in 1600℃

8

Bonding in high temperature


not bonded in 1600℃

9

20—1000℃ coefficient of thermal expansion

mm.10-6/℃.m

8.2

10

Thermal conductivity

W/m.k

25

11

Electric insulation strength

KV/mm

20

12

20℃direct current

insulation resistance

Ohm/cm

1014

13

High-temperature

insulation resistance

1000℃ MΩ

≥0.08

1300℃ MΩ

≥0.02

14

Thermal shock resistance


4 times not cracked in 1550℃

15

Maximum working temperature

1800

16

Hardness

Mohs

9

17

Flexural strength

Mpa

350


Composition table

NAMECONTENT(%)
Al2O399.3-99.5(99.7)
SiO20.3-0.5
CaO+MgO0.2-0.3
K2O+Na2O0.2-0.35
Fe2O3<0.1
OTHER<0.05


Our factory

Jinzhou Yunxing Industrial Ceramics Co., Ltd. was established in 2000, mainly producing various types of tubular ceramic products and various industrial parts with alumina content above 99.3%. The factory covers an area of 4000 square meters.

The company's main products are: alumina ceramic tubes, alumina ceramic crucibles, alumina ceramic rods, alumina ceramic boats, alumina ceramic plates, alumina ceramic parts, etc.

The company currently has 3 1800 ° C high-temperature furnaces and 2 1400 ° C low-temperature kilns independently designed and manufactured. The molding process is mainly based on grouting molding, and has other molding process equipment such as extrusion and hot die casting.

The company has 105 employees, including one senior ceramic engineer, three engineers, six overseas sales staff, and four professional after-sales staff.


Alumina Corundum Square Tube



FAQ

Q1. Material: Alumina ceramic
Q2. Payment Term: PayPal; T/T; 
Q3. Shipment: by sea, by air, by courier, by post, etc.

Q4. Can alumina ceramic furnace tubes be reused after use?

Yes, alumina ceramic furnace tubes can be reused after use, provided they are undamaged and free from contamination. Proper cleaning and inspection are necessary to ensure their suitability for subsequent applications.

Q5. Can alumina ceramic furnace tubes withstand rapid temperature changes?

Alumina ceramic furnace tubes exhibit good thermal shock resistance, allowing them to withstand rapid temperature changes without cracking or breaking. However, it's essential to choose a tube with suitable thermal shock resistance for specific application requirements.

Q6. How long do alumina ceramic furnace tubes typically last?

The lifespan of alumina ceramic furnace tubes can vary depending on factors such as application conditions, operating temperatures, and maintenance practices. With proper care and usage, these tubes can last several years, providing reliable performance.


Alumina



Certificate

Alumina Ceramic Alumina Corundum Square Tube



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