1. Made of over 99% alumina.
2. It has high temperature resistance and chemical resistance.
3. It has excellent mechanical strength.
4. Excellent electrical insulation performance.
5. Accept customized sizes.
6. Large stock and fast delivery.
High alumina ceramic tubes (with Al ₂ O3 content ≥ 48%) have become the preferred refractory material due to their excellent high-temperature stability. Its fire resistance can reach over 1700 ℃, far higher than traditional clay bricks, especially suitable for extreme high temperature environments such as steel smelting blast furnaces and glass melting furnaces. The corundum phase and mullite crystal structure formed inside the material endow it with excellent thermal shock resistance, which can maintain structural integrity even under rapid cooling and heating conditions, avoiding peeling or cracking caused by thermal stress. In addition, the chemical inertness of high alumina ceramic tubes can effectively resist the erosion of acidic or weakly alkaline slag, significantly extending the service life of kilns.
Diversified Application Scenarios
1. In the field of metallurgy, high alumina ceramic lining bricks are widely used in key parts such as blast furnace furnaces and converter liners. Their high mechanical strength can withstand metal melt erosion and mechanical vibration;
2. In the glass industry, high alumina ceramics are used as refractory linings for melting furnaces, and their low thermal expansion coefficient ensures the stable formation of high-temperature glass liquids;
3. In equipment such as cement rotary kilns, the wear resistance of high alumina ceramics significantly reduces losses caused by material friction.
4. The application of high alumina ceramics in corrosion-resistant scenarios such as garbage incinerators and chemical reactors is also rapidly expanding.
Size,Performance index
Alumina Tube(open both ends)(slip casting) Specification Table:
Number
SPEC: OD x ID
LENG TH MM
Number
SPEC: OD x ID
LENG TH MM
INCH
MM
INCH
MM
1
0.197x0.118
5x3
≤800
32
1.126x0.886
28.6x22.5
≤1800
2
0.236x0.157
6x4
≤1300
33
1.181x0.827
30x21
3
0.250x0.125
6.4x3.2
34
1.181x0.906
30x23
4
0.250x0.157
6.4x4
35
1.260x0.984
32x25
5
0.250x0.188
6.4x4.8
36
1.375x1.125
34.9x28.6
6
0.276x0.157
7x4
37
1.378x1.063
35x27
7
0.276x0.197
7x5
38
1.496x1.181
38x30
8
0.315x0.197
8x5
39
1.575x1.181
40x30
9
0.354x0.236
9x6
≤1600
40
1.654x1.339
42x34
10
0.375x0.250
9.6x6.4
41
1.750x1.500
44.5x38.1
11
0.394x0.236
10x6
42
1.811x1.496
46x38
12
0.394x0.276
10x7
43
1.875x1.625
47.6x41.3
13
0.433x0.276
11x7
44
1.969x1.575
50x40
14
0.472x0.236
12x6
45
2.000x1.750
50.8x44.5
15
0.472x0.315
12x8
46
2.250x2.000
57.2x50.8
16
0.472x0.355
12x9
47
2.283x1.890
58x48
17
0.500x0.250
12.7x6.4
48
2.362x1.96
60x50
18
0.500x0.375
12.7x9.5
49
2.500x2.250
63.5x57.2
19
0.551x0.394
14x10
50
2.559x2.165
65x55
20
0.591x0.394
15x10
≤1800
51
2.750x2.500
69.9x63.5
21
0.630x0.472
16x12
52
2.756x2.362
70x60
22
0.669x0.472
17x12
53
2.956x2.561
75x65
23
0.688x0.437
17.5x11.1
54
3.000x2.750
76x70
24
0.750x0.512
19.1x13
55
3.150x2.675
80x68
25
0.787x0.591
20x15
56
3.500x3.125
88.9x79.4
≤1600
26
0.866x0.630
22x16
57
3.543x3.150
90x80
27
0.866x0.669
22x17
58
3.937x3.543
100x90
28
0.945x0.709
24x18
59
4.000x3.650
101.6x93
29
1.000x0.750
25.4x19.1
60
4.331x3.937
110x100
≤1500
30
1.063x0.669
27x17
61
4.500x4.125
114.3x105
31
1.063x0.787
27x20
62
4.724x4.331
120x110
Insulation tube (extrusion) Specification Table
Number
1 Bore tube SPEC: OD x ID
Length MM
INCH
MM
1
0.031x0.011
0.8x0.3
≤18500
2
0.039x0.019
1x0.5
3
0.059x0.024
1.5x0.6
4
0.079x0.039
2x1
5
0.100x0.050
2.5x1.3
6
0.118x0.059
3x1.5
7
0.118x0.079
3x2
8
0.125x0.063
3.2x1.6
9
0.157x0.079
4x2
10
0.197x0.118
5x3
11
0.236x0.118
6x3
12
0.236x0.157
6x4
13
0.250x0.125
6.4x3.2
14
0.250x0.157
6.4x4
15
0.250x0.188
6.4x4.8
16
0.276x0.197
7x5
17
0.315x0.197
8x5
18
0.354x0.236
9x6
19
0.374x0.250
9.5x6.35
20
0.394x0.236
10x6
21
0.433x0.276
11x7
22
0.472x0.315
12x8
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
Torr・L/sec
>10-11=1.33322×10-12Pa・m3/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
Quality testing standards
1. Visual inspection of the Alumina Ceramic Tubes for any signs of damage or irregularities.
2. Measurement of the length, width, and thickness of the Alumina Ceramic Tubes to check for accuracy.
3. Checking for any leaks or pinhole defects in the Alumina Ceramic Tubes.
4. Testing for proper adhesion of the end cap to the Alumina Ceramic Tubes.
5. Verification of the material and chemical composition of the Alumina Ceramic Tubes.
Factory Equipment
Slip casting moulding: Inject the prepared slurry into the gypsum mold and let it stand for a period of time to allow the gypsum mold to absorb moisture. The slurry forms a uniform body on the inner wall of the mold.
Injection moulding: Inject a slurry containing paraffin into a metal mold at a certain temperature and pressure, and after the body cools and solidifies, perform demolding to prepare ceramic bodies.
Extrusion moulding: Suitable for long tube products, the powder is extruded into shape through an extruder.
FAQ
Q1. What information should we provide to obtain a quotation?
Please provide the specifications of the alumina ceramic tube, such as shape, size, quantity, application, etc.
Q2： What are the different types of alumina ceramic tubes?
A： Installing alumina ceramic tubes is relatively simple. Firstly, you need to measure the alumina ceramic tube cut to the correct size. Then, you need to insert the alumina ceramic tube into the furnace and fix it.
Q4. What is the lead time for the alumina ceramic tube?
The lead time for the alumina ceramic tube is dependent on the size and quantity required.Please contact us.
Certificate
Feedback
1. If you have any questions or questions, please contact us and we will communicate with you as soon as possible.
2. For any other satisfaction, please also feedback to us to make our service better and better.
