Category · Made to drawing · Any base chemistry

Special Shapes Refractory Bricks & Precast Refractory

Special shapes are refractory products engineered to non-rectangular dimensions — arch and wedge bricks for kiln crowns and circular linings, checker bricks for thermal-regenerator chambers, burner blocks and nozzle bricks for furnace hot-air injection, tap-hole bricks for metallurgical tapping, and fully custom precast refractory shapes built to engineering drawings. The chemistry depends on application: most special shapes are produced from high-alumina, silicon-carbide, magnesia or precast castable bases. Common refractory base grades apply — fire bricks, high-alumina, basic, SiC — re-formed in dies or precast moulds. firebrickssource.com supplies stock arch / wedge / checker shapes and engineered custom precast refractories to drawing, manufactured in Rajkot, Gujarat, India for steel, cement, glass, ceramic and petrochemical project work worldwide.

Shape variants

Special shapes — what we make

$Arch & Wedge Refractory Bricks — firebrickssource.com$

AW · No.1 · 2 · 3

Arch & Wedge Bricks

Standard arch / wedge nomenclature for kiln crowns, furnace roofs, ladle covers.

Stock AW 1/2/3 Custom radii

$Checker Refractory Bricks for Regenerators — firebrickssource.com$

CHK

Checker Bricks for Regenerators

Cruciform, octagonal, basket-weave shapes for glass & blast-furnace regenerators.

40 – 75 mm Silica / Mullite / MgO

$Burner Blocks & Nozzle Refractory Bricks — firebrickssource.com$

Burner Blocks & Nozzle Bricks

Precast / pressed in HA, zircon, SiC base — custom ports and flame profiles.

HA 60 – 90% Max 1800 °C

$Tap-Hole Refractory Bricks — firebrickssource.com$

Tap-Hole Bricks

High-alumina or MgO-C — blast furnace, EAF, ladle nozzle, ferro-alloy tapping.

HA 80 – 90% Max 1800 °C

$Custom Precast Refractory Shapes — firebrickssource.com$

PCR

Custom Precast Refractory

Low-cement / ULC castable, vibration cast in steel moulds — engineered to drawing.

5 kg – 5 tonnes Any base chemistry

Properties overview

Special shape categories compared

Special shapes refractory — comparative properties
Shape	Base chemistry	Max temp °C	Form route	Typical application
Arch / Wedge	FC / HA / Mullite / SiC	1500 – 1800	Pressed in dies	Kiln crown, furnace roof
Checker	Silica / Mullite / MgO / HA	1500 – 1700	Pressed	Regenerator chamber
Burner Block	HA 60 – 90 / Zircon / SiC	1700 – 1800	Precast or pressed	Burner ports, flame tiles
Tap-Hole	HA 80 – 90 / MgO-C	1800	Hand-rammed or pressed	BF, EAF, ladle nozzle
Custom Precast	HA / SiC / Mullite / MgO-spinel	to 1800	Cast LCC / ULCC	To drawing

*Typical certified values — actual batch values issued on the per-shipment test certificate. Values aligned with IS 1528 / ASTM C-series / EN 993 test methods.*

Applications

Where special shapes are used

Cement Kilns

Arch & wedge for kiln crown, burner blocks, nose-ring shapes.

Steel & Foundry

EAF roof shapes, ladle covers, tap-hole assemblies, slide gates.

Glass Furnaces

Crown arch, regenerator checker, port-neck burner blocks.

Blast Furnace

Stove checker, hot-blast main, tuyère, tap-hole assemblies.

Petrochemical

Reformer tube supports, anchor bricks, sulphur-recovery dampers.

Waste / Boilers

Incinerator anchor bricks, tube-shield blocks, flue dampers.

Engineering

Send a drawing — we'll engineer the shape

Customer drawing → mould design → mix design → casting / pressing → curing → firing → dimensional QC. Lead time 4 – 8 weeks depending on tonnage and complexity.

Send drawing & specs

Need a quote?

Quote within 24 business hours

Send drawings, base chemistry, quantity and Incoterm — we'll come back with an itemised quote and lead-time confirmation.

Request a Quote

Related categories