Looking for high-quality fire bricks for sale? RS Refractory is a leading manufacturer offering heat-resistant firebricks with operating temperatures from 1,100°C to 1,800°C. We provide bulk stock, wholesale pricing ($0.3–$3.5 per piece), OEM/ODM customization, and fast delivery to 30+ countries (USA, India, Germany, South Africa, etc.).
All products are ISO 9001 & ASTM certified, with free samples and technical support available. Whether you need fireclay bricks for pizza ovens, high alumina bricks for steel furnaces, or custom-shaped bricks for kilns, we have the right solution to meet your needs.
As a professional fire brick supplier, we offer a full range of refractory bricks to cover industrial, commercial, and residential applications. Below is our core product lineup—all in bulk stock, with customizable sizes and wholesale pricing.
Sk30 Fireclay Bricks: Operating temperature 1,150–1,250°C, Al₂O₃ content 30%. Ideal for low-temperature furnaces, fireplaces, and boiler linings. Features excellent thermal shock resistance and low cost, perfect for residential and small commercial use.
Sk32 Fireclay Bricks: Al₂O₃ 32%, max temp 1,300°C. Suitable for forge linings, small kilns, and pizza oven floors. Balances durability and affordability, with good abrasion resistance for frequent use.
Sk34 Fireclay Bricks: Al₂O₃ 34%, service temp 1,350°C. Widely used in ceramic kilns, industrial stoves, and incinerator linings. Offers enhanced high-temperature stability compared to Sk30/Sk32 grades.
Sk36 Fireclay Bricks: Al₂O₃ 36%, max temp 1,400°C. Designed for medium-temperature industrial furnaces, glass annealing ovens, and petrochemical boiler linings. Resists slag erosion and thermal cycling.
Sk38 Fireclay Bricks: Al₂O₃ 38%, operating temp 1,450°C. Premium fireclay grade for heavy-duty medium-heat applications, including foundry forges and thermal processing kilns. Delivers longer service life in harsh conditions.
40% Al₂O₃ High Alumina Bricks: Max temp 1,500°C, excellent thermal shock resistance. Used in steel ladle linings, EAF sidewalls, and high-temperature kilns. Ideal for applications requiring balanced strength and corrosion resistance.
60% Al₂O₃ High Alumina Bricks: Service temp 1,600°C, high compressive strength. Suitable for blast furnace bosh, glass melting furnaces, and petrochemical reactors. Resists aggressive slags and high mechanical loads.
80% Al₂O₃ High Alumina Bricks: Premium grade, max temp 1,750°C. Used in ultra-high-temperature environments like ceramic sintering kilns, EAF hot spots, and aerospace component heat treatment furnaces. Offers superior durability and heat resistance.
Ceramic Fiber Insulating Bricks: Thermal conductivity 0.10–0.20 W/(m·K), temp 1,200°C. Lightweight (density 0.6–1.0 g/cm³) for furnace cold faces, backup insulation, and building fireproofing. Reduces energy consumption by 30–40% compared to dense bricks.
Ultra-Light Insulating Bricks: Porosity 65–70%, max temp 1,300°C. Perfect for small kilns, pizza oven insulation layers, and heat preservation chambers. Easy to cut and install, ideal for custom projects.
High-Temperature Insulating Bricks: Service temp 1,500°C, λ=0.25–0.35 W/(m·K). Used in industrial furnace backup linings, cement kiln insulation, and steel mill heat recovery systems. Balances insulation and structural stability.
Specialized for ceramic, glass, and pottery kilns. Available in fireclay (Sk34–Sk38) and high alumina (40–60% Al₂O₃) grades, operating temps 1,350–1,600°C. Features precise size tolerance, excellent thermal shock resistance, and resistance to glaze and flux corrosion. Custom shapes (arch, wedge) available for kiln dome and door linings.
Heat-resistant (1,150–1,250°C), aesthetically pleasing fireclay bricks. Available in red, brown, and gray finishes, with smooth or rough surfaces. Suitable for wood-burning fireplaces, stoves, and chimney linings. Non-toxic, low porosity, and easy to clean. Residential and commercial grades available.
Food-safe fireclay or cordierite bricks, operating temp 1,200°C. Excellent heat retention for even baking, ideal for wood-fired and gas pizza ovens. Available in standard 230×114×65mm size and custom cuts. Resists thermal shock from frequent heating and cooling cycles.
Dense (2.3–2.6 g/cm³) fireclay or high alumina bricks, designed for high-wear, high-temperature industrial applications. Operating temp 1,400–1,600°C, high compressive strength (≥400 kg/cm²). Used in steel mill tundishes, foundry forges, and slag lines. Resists impact, abrasion, and slag penetration.
OEM/ODM services for custom dimensions (minimum size 50×50×20mm, maximum 600×300×200mm) and shapes: arch bricks, wedge bricks, block bricks, and special profiles. Made to your drawings or samples, with short lead times (15–25 days). Suitable for unique equipment or retrofitting projects.
|
Product Type |
Grade |
Al₂O₃ (%) |
Fe₂O₃ (%) |
Bulk Density (g/cm³) |
CCS (kg/cm²) |
Refractoriness (°C) |
Max Service Temp (°C) |
Thermal Conductivity (W/(m·K)@500°C) |
Size (mm) |
Shape Tolerance (mm) |
MOQ |
Lead Time |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Fireclay Brick |
Sk30 |
30±1 |
≤2.5 |
2.1–2.2 |
≥250 |
1,580 |
1,250 |
1.0–1.2 |
230×114×65 |
±1 |
1,000 pcs |
7–10 days |
|
Fireclay Brick |
Sk38 |
38±1 |
≤2.0 |
2.2–2.3 |
≥300 |
1,670 |
1,450 |
1.2–1.4 |
230×114×65 |
±1 |
1,000 pcs |
7–10 days |
|
High Alumina Brick |
40% |
40±2 |
≤1.5 |
2.3–2.4 |
≥350 |
1,710 |
1,500 |
1.4–1.6 |
230×114×65 |
±1 |
500 pcs |
10–12 days |
|
High Alumina Brick |
80% |
80±2 |
≤0.8 |
2.6–2.7 |
≥500 |
1,850 |
1,750 |
1.8–2.0 |
230×114×65 |
±0.5 |
500 pcs |
12–15 days |
|
Insulating Fire Brick |
Ceramic Fiber |
45±3 |
≤1.0 |
0.8–1.0 |
≥80 |
1,700 |
1,200 |
0.15–0.20 |
230×114×65 |
±2 |
500 pcs |
7–10 days |
|
Pizza Oven Brick |
Food-Safe |
32±1 |
≤2.0 |
2.1–2.2 |
≥250 |
1,600 |
1,200 |
1.0–1.2 |
230×114×65 |
±1 |
200 pcs |
5–7 days |
|
Custom Shape Brick |
OEM |
30–80 |
≤2.5 |
0.8–2.7 |
80–500 |
1,580–1,850 |
1,250–1,750 |
0.15–2.0 |
Custom |
±0.5–±2 |
1,000 pcs |
15–25 days |
Our fire bricks are widely used in industrial, commercial, and residential sectors, providing reliable heat resistance and durability across perse environments. Below are the key application areas:
Steel & Metallurgy: Steel ladle linings, EAF (Electric Arc Furnace) sidewalls and hot spots, blast furnace bosh, tundishes, and slag lines. High alumina and heavy-duty fire bricks resist extreme heat and slag erosion.
Ceramic & Glass: Ceramic kilns, glass melting furnaces, annealing ovens, and glaze firing chambers. Kiln bricks and high alumina bricks ensure uniform heating and resistance to glaze/flux corrosion.
Petrochemical & Energy: Petrochemical reactors, boiler linings, incinerators, and heat recovery systems. High-temperature fire bricks withstand aggressive chemicals and cyclic heating.
Foundry & Forge: Forge linings, foundry cupolas, and metal heat treatment furnaces. Heavy-duty fireclay and high alumina bricks resist impact and abrasion from molten metal.
Cement & Lime: Cement kiln linings, lime rotary kilns, and clinker coolers. High-temperature insulating bricks reduce energy consumption and improve heat retention.
Food & Beverage: Wood-fired pizza ovens, commercial bakeries, and roasters. Food-safe fire bricks provide even heat distribution and retention for consistent cooking results.
Hospitality & Construction: Hotel and restaurant fireplaces, sauna heaters, and commercial chimneys. Aesthetic fireplace bricks combine functionality with visual appeal.
Manufacturing: Industrial ovens, drying chambers, and thermal processing equipment. Insulating fire bricks reduce energy costs and maintain stable temperatures.
Home Fireplaces & Stoves: Wood-burning and gas fireplaces, pellet stoves, and chimney linings. Fireclay bricks are non-toxic, heat-resistant, and easy to maintain.
DIY Projects: Home pizza ovens, backyard forges, and garden fire pits. Standard and custom-sized bricks are ideal for hobbyists and DIY enthusiasts.
Fireproofing: Wall and ceiling fireproofing, basement bomb shelters, and safe rooms. Insulating fire bricks provide passive fire protection for residential buildings.
Selecting the correct fire brick depends on your operating temperature, application environment, and performance requirements. Follow this step-by-step guide to make an informed purchase:
Low Temp (≤1,250°C): Choose Sk30/Sk32 fireclay bricks or fireplace/pizza oven bricks. Ideal for residential fireplaces, small ovens, and DIY projects.
Medium Temp (1,250–1,500°C): Opt for Sk34/Sk38 fireclay bricks or 40% high alumina bricks. Suitable for ceramic kilns, forges, and commercial ovens.
High Temp (1,500–1,800°C): Select 60–80% high alumina bricks or high-temperature insulating bricks. Designed for steel furnaces, glass kilns, and industrial reactors.
High Abrasion (e.g., foundries, slag lines): Heavy-duty fire bricks or high alumina bricks (≥60% Al₂O₃) with high density and compressive strength.
Chemical Corrosion (e.g., petrochemical, ceramic glazes): High alumina bricks or acid-resistant fireclay bricks to resist slag, chemicals, and flux penetration.
Low Abrasion (e.g., fireplaces, backup insulation): Standard fireclay bricks or insulating fire bricks for cost-effectiveness.
Oxidizing Atmosphere (e.g., air-fuel furnaces): Most fireclay and high alumina bricks perform well; avoid carbon-containing bricks.
Reducing Atmosphere (e.g., gas-fired kilns): High alumina bricks or fireclay bricks with low Fe₂O₃ content to prevent oxidation.
Vacuum or High-Pressure Environments: Dense high alumina bricks with low porosity to avoid gas leakage.
Pizza Ovens/Fireplaces: Food-safe fireclay or cordierite bricks, excellent heat retention, aesthetic finish.
Ceramic Kilns: Sk34–Sk38 fireclay or 40% high alumina bricks, precise size tolerance, thermal shock resistance.
Steel Furnaces: 60–80% high alumina or magnesia-alumina bricks, high-temperature stability, slag resistance.
Insulation Layers: Ceramic fiber or ultra-light insulating bricks, low thermal conductivity, energy efficiency.
|
Feature |
Fireclay Bricks |
High Alumina Bricks |
Insulating Fire Bricks |
|---|---|---|---|
|
Al₂O₃ Content |
30–38% |
40–80% |
30–45% |
|
Max Temp (°C) |
1,150–1,450 |
1,500–1,750 |
1,200–1,500 |
|
Bulk Density (g/cm³) |
2.1–2.3 |
2.3–2.7 |
0.6–1.0 |
|
Thermal Conductivity |
1.0–1.4 W/(m·K) |
1.4–2.0 W/(m·K) |
0.10–0.35 W/(m·K) |
|
Cost |
Low ($0.3–$0.8/piece) |
Medium-High ($1.2–$3.5/piece) |
Medium ($0.5–$1.5/piece) |
|
Best For |
Fireplaces, pizza ovens, low-med temp furnaces |
High-temp industrial furnaces, steel mills |
Backup insulation, energy-saving applications |
We offer competitive wholesale pricing for fire bricks, with discounts for bulk orders. Below is the price range for our core products (prices are FOB China, subject to quantity and customization):
Fireclay Bricks (Sk30–Sk38): $0.3–$0.8 per piece
High Alumina Bricks (40–60% Al₂O₃): $1.2–$2.5 per piece
High Alumina Bricks (80% Al₂O₃): $2.8–$3.5 per piece
Insulating Fire Bricks: $0.5–$1.5 per piece
Pizza Oven/Fireplace Bricks: $0.6–$1.2 per piece
Custom Size/Shape Bricks: $0.8–$4.0 per piece (depending on complexity)
1,000–5,000 pieces: 5% discount
5,001–20,000 pieces: 10% discount
20,001+ pieces: 15% discount
Long-term partnership (3+ orders/year): Additional 5% discount
Payment Terms: T/T (30% deposit, 70% against B/L copy), L/C at sight, Western Union for small orders
Shipping: By sea (FCL/LCL), air freight, or express (DHL/FedEx/UPS) for urgent orders
Delivery Time: 5–10 days for in-stock products; 15–25 days for custom orders
Port of Loading: Tianjin/Shanghai/Ningbo, China
Export Coverage: 30+ countries (USA, Canada, EU, India, South Africa, Australia, etc.)
As a professional fire brick manufacturer with 15+ years of experience, we are committed to providing high-quality products, competitive pricing, and excellent service. Here’s why 5,000+ customers worldwide choose us:
2 production bases with 8 advanced production lines, annual output 50,000 tons
Automatic batching, pressing, and firing equipment to ensure product consistency
R&D team with 10+ engineers, able to develop custom solutions for unique needs
ISO 9001:2015 quality management system certification
ASTM C863, DIN EN 993, and GB/T 3994-2014 product certifications
In-house testing lab with equipment for Al₂O₃ content, CCS, refractoriness, and thermal conductivity
100% pre-shipment inspection to ensure no defective products
10,000+ tons of in-stock fire bricks, ready to ship within 5–10 days
Long-term cooperation with major shipping companies for competitive freight rates
Custom clearance support to ensure smooth delivery to your destination
Full OEM/ODM services: custom sizes, shapes, logos, and packaging
Free sample development based on your drawings or specifications
Flexible production to meet small-batch and large-scale orders
Export to 30+ countries, with rich experience in international trade and customs clearance
24/7 technical support to solve your product use and installation problems
Warranty: 12 months for manufacturing defects, free replacement if quality issues occur
Regular follow-up after delivery to ensure customer satisfaction
A South African steel mill purchased 20,000 pieces of 60% high alumina bricks for their EAF linings. After 6 months of use, the mill reported a 35% extension in lining life compared to their previous supplier, reducing maintenance costs by $40,000 annually. “The fire bricks have excellent heat resistance and slag erosion resistance, and the delivery was on time as promised,” said the mill’s procurement manager.
Ready to purchase high-quality fire bricks at wholesale prices? Take action now with our convenient services:
Get a Free Quote: Fill out the contact form with your product type, quantity, and specifications, and we’ll send you a detailed quote within 24 hours.
Request Free Samples: Order free samples to test quality before placing bulk orders (shipping cost at buyer’s expense).
Download Data Sheet: Click here to download our complete fire bricks data sheet with full technical specifications and pricing.
Silicon carbide plates are mainly composed of silicon carbide (SiC) as the aggregate (with a content usually ≥ 80%).
High alumina fine powder is a powder material with alumina (Al2O3) as the main component.
Refractory cement, also known as aluminate cement, is a fire-resistant hydraulic cementitious material.
High alumina fine powder is a powder material with alumina (Al2O3) as the main component.
