Refractory bricks are the cornerstone materials for building high-temperature furnaces, kilns, and industrial linings. The dimensions of refractory bricks play a decisive role in determining the structural strength, thermal performance, and installation efficiency of the entire refractory system.
At Xintai Refractory, we understand that every furnace design and industrial process demands precise brick sizes for perfect fitting and performance. With over 20 years of production experience, Xintai provides both standard refractory brick dimensions and custom-sized refractory solutions to meet diverse industrial needs.
What Are Refractory Brick Dimensions?
“Refractory brick dimensions” refer to the physical measurements — including length, width, height, and angle — of heat-resistant bricks used in industrial kilns and furnaces. The right dimension ensures that the brickwork forms a strong, seamless lining capable of withstanding high temperatures, mechanical stress, and thermal shock.
Refractory bricks are not one-size-fits-all. Different applications—steelmaking, glass melting, cement production, and non-ferrous metal processing—require different brick sizes and shapes to optimize performance and minimize material waste.
Standard Refractory Brick Dimensions
The most common standard refractory brick size is 230×114×65mm, also known as T3 brick. This dimension is globally recognized and widely used in most industrial kilns and furnaces.
However, Xintai Refractory manufactures a complete range of standard and shaped refractory bricks, each with unique dimensions and applications.
Below is a list of commonly used refractory brick dimensions and types available from Xintai Refractory:
| Brick Type | Dimension (mm) | Shape | Features / Application |
|---|---|---|---|
| T3 | 230×114×65 | Straight | Standard size, suitable for most kiln walls and arches. |
| T6 | 250×123×65 | Straight | Slightly larger brick, used together with T3 to improve work efficiency. |
| T14 | 171×113×65 | Straight | Smallest standard size; ideal for filling kiln gaps and detailed masonry. |
| T19 | 230×114×65/55 | Axe | Tapered design for arch construction and kiln door areas. |
| T20 | 230×114×65/45 | Axe | Wider curvature; suitable for larger dome and vault structures. |
| T29 | 230×171×65/55 | Axe | Broader width enhances construction efficiency for curved sections. |
| T30 | 230×171×65/45 | Axe | Suitable for larger arched or vaulted furnace areas. |
| T38 | 230×114×65/55 | Knife | Ideal for inner arch masonry; used in industrial furnace roofs. |
| T39 | 230×114×65/45 | Knife | Larger curvature; used in kilns with special arc requirements. |
| Sheet Brick 1 | 230×114×20 | Straight | Thin type; used as an insulation layer or surface protection. |
| Sheet Brick 2 | 230×114×30 | Straight | Slightly thicker version for heat insulation layers. |
| Sheet Brick 3 | 230×114×40 | Straight | Commonly used in double-layer lining construction. |
| Sheet Brick 4 | 230×57×65 | Straight | Narrow type for small structural spaces. |
Large and Special Shaped Refractory Brick Dimensions
For industrial facilities that require larger or non-standard kiln designs, Xintai Refractory offers large-format and special-shaped refractory bricks. These are designed to ensure a precise fit, reduce cutting losses, and enhance furnace integrity.
| Brick Type | Dimension (mm) | Shape | Applications |
|---|---|---|---|
| Common Shaped Brick 1 | 520×230×113 | Straight | Used in large tunnel kilns or regenerative chambers. |
| Common Shaped Brick 2 | 650×230×113 | Straight | Applied in long-span furnace structures. |
| Common Shaped Brick 3 | 780×230×113 | Straight | Ideal for cement rotary kilns and large furnaces. |
| G1 Brick | 230×150×75 | Straight | Thicker type for areas with higher mechanical load. |
| G2 Brick | 345×150×75 | Straight | Heavy-duty lining for steel furnaces. |
| G5 Brick | 230×150/120×75 | Knife Edge | Used in arched or circular structures. |
| G6 Brick | 230×150/110×75 | Knife Edge | For vaults and transition zones. |
These special-shaped refractory bricks are designed using 3D CAD modeling to ensure dimensional accuracy. Xintai’s engineers can also develop custom refractory brick drawings based on your furnace layout.
Why Refractory Brick Dimensions Matter
Choosing the right refractory brick dimensions is not just about fitting the structure—it directly affects furnace performance, energy efficiency, and service life. Here are the key reasons why:
Precision Assembly
Correct brick sizes ensure tight joints, which reduce heat loss and prevent air infiltration.Structural Strength
Accurate dimensions provide balanced stress distribution, especially in arched and vaulted designs.Reduced Material Waste
Standardized brick sizes minimize on-site cutting, saving labor and materials.Thermal Efficiency
Properly sized bricks ensure uniform heat distribution and improve energy utilization.Maintenance and Replacement
When standard dimensions are used, replacement becomes easier and more cost-effective.
Custom Refractory Brick Dimensions from Xintai Refractory
Every industrial furnace has unique working conditions—temperature, chemical atmosphere, and mechanical load. Therefore, custom refractory brick dimensions are often necessary.
At Xintai Refractory, we specialize in tailor-made brick production, including:
Non-standard straight bricks
Arch and wedge bricks
Key bricks and skew bricks
Large block refractory components
Our team uses advanced molding technology and precise cutting equipment to ensure dimensional accuracy within ±1mm tolerance.
We also support various refractory materials such as high alumina, silica, magnesia, and mullite, which can be selected according to customer requirements.
Applications of Different Refractory Brick Sizes
Refractory brick dimensions differ depending on where they are used within the furnace.
Here are some examples:
| Application Area | Recommended Brick Type | Typical Dimension (mm) |
|---|---|---|
| Furnace Wall | T3, T6, G1 | 230×114×65 / 250×123×65 |
| Furnace Roof / Vault | T19, T20, T38, T39 | 230×114×65/45 |
| Furnace Door / Burner Zone | T14, T19 | 171×113×65 / 230×114×65/55 |
| Rotary Kiln Lining | Common Shaped Brick 2 & 3 | 650×230×113 / 780×230×113 |
| Small Chamber or Transition Zone | G5, G6 | 230×150/120×75 |
This classification helps customers choose the right refractory brick dimension for specific furnace areas, achieving better thermal insulation and durability.
Conclusion
In conclusion, refractory brick dimensions are fundamental to furnace design and performance. Whether you need standard T3 bricks or custom-shaped refractory solutions, Xintai Refractory can provide precise, high-quality products that meet your specific technical and operational requirements.
If you’re designing or maintaining a kiln, furnace, or high-temperature unit, contact Xintai Refractory today. Our experts will help you choose the right refractory brick dimensions and materials for optimal performance and longevity.
Email: sales@xintairefractory.com
Website: www.xintairefractory.com
