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Alumina Corundum Square Tube

Brand YUNXING
Product origin China Jinzhou
Delivery time 5-30 Days
Supply capacity 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 ℃.

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Alumina Corundum Square Tube

My factory looking for distributors

We only make high purity alumina ceramics

6. High purity alumina has good hardness and good wear resistance.
7. High purity alumina products have a longer service life.

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.

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

Number	SPEC: OD x ID		LENGTH MM	Number	SPEC: OD x ID		LENGTH MM
Number	INCH	MM	LENGTH MM	Number	INCH	MM	LENGTH 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

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
13	High-temperature insulation resistance	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

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.

FAQ

1. Material: Alumina ceramic
2. Payment Term: PayPal; T/T;
3. Shipment: by sea, by air, by courier, by post, etc.

4. 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.

5.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.

6.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.