AW · Al₂O₃ 30 – 46% · 1500 °C
Arch & Wedge Fire Bricks — Refractory Shapes
Supplier and exporter from Rajkot, India. Pre-shaped fireclay arch and wedge refractory bricks per IS 1528 nomenclature — sized to lay up directly into kiln crowns, chimney throats and rotary kiln arches without on-site cutting.
- AW No.1230 × 114 × 65/55
- AW No.2230 × 114 × 65/45
- AW No.3230 × 114 × 65/35
- Al₂O₃30 – 46%
- Max temp1500 °C
- MOQ5 – 10 MT
About these shapes
What arch and wedge bricks are — and how they're laid
Arch and wedge fire bricks are pre-shaped fireclay refractories with a tapered profile — one face thinner than the opposite — designed to lay up into circular or curved structures such as kiln crowns, chimney throats and rotary kiln arches. They use the same dense-fireclay chemistry as our standard dense fireclay brick (Al₂O₃ 30 – 46%, max 1500 °C), but the focus on this page is the shape catalogue, masonry sequencing and the radius-to-shape ratios that drive procurement.
What is an arch or wedge fire brick? It is a fireclay refractory brick produced to a specific tapered geometry per IS 1528 nomenclature — AW No.1 (mildest taper), AW No.2 (mid taper), AW No.3 (steepest taper) — and corresponding wedge variants that lay perpendicular to the arch. By combining these sizes, a mason can build any kiln-crown radius from roughly 600 mm up to several metres without on-site cutting, which is faster, more dimensionally accurate and produces a stronger lining than cut straight bricks.
Compared to a straight-brick crown built with cut-and-fill, an arch / wedge crown delivers tighter joints, better load distribution and longer service life — particularly under the cycling loads typical of ceramic tunnel kilns, beehive coke ovens and rotary kiln tail arches. Compared to monolithic precast crowns, arch / wedge masonry is more economical for one-off projects and more easily repaired on a piece-by-piece basis.
firebrickssource.com — Agochar Tech LLP — manufactures the full IS 1528 arch / wedge catalogue from Rajkot, Gujarat, India, plus side-arch, end-arch, key, skew and split shapes on indent. For custom radii, send the kiln drawing (internal radius, arch span, brick thickness, joint allowance) and we will return a per-piece itemised shape count, stacking diagram and quote. Refractory shape orders ship from Mundra in palletised mixed-shape units.
Shape catalogue & specifications
Arch & wedge sizes — IS 1528 nomenclature
| Property / shape | Value / dimension | Test method / reference |
|---|---|---|
| Arch & Wedge No.1 (AW No.1) | 230 × 114 × 65 / 55 mm | IS 1528 nomenclature |
| Arch & Wedge No.2 (AW No.2) | 230 × 114 × 65 / 45 mm | IS 1528 nomenclature |
| Arch & Wedge No.3 (AW No.3) | 230 × 114 × 65 / 35 mm | IS 1528 nomenclature |
| Side / end arch, key, skew, split | Available on indent — drawing required | Custom |
| Al₂O₃ content | 30 – 46 % | IS 1528-7 |
| Apparent porosity | ≤ 24 % | IS 1528-8 / ASTM C20 |
| Bulk density | ≥ 2.0 g/cm³ | IS 1528-12 |
| Cold crushing strength (CCS) | ≥ 30 MPa | IS 1528-4 / ASTM C133 |
| Refractoriness under load (RUL T₀.₅) | ≥ 1350 °C | IS 1528-2 / EN 993-8 |
| Maximum service temperature | 1500 °C | — |
| High-alumina & silica versions | Available on indent — quoted separately | — |
| Custom radius cuts | To drawing — internal radius, span, thickness, joint | Custom |
| 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 to use arch & wedge fire bricks
- Ceramic tunnel kiln crowns
- Lime kiln preheater arches
- Rotary kiln tail arch / nose ring back-up
- Beehive and recovery coke oven domes
- Industrial chimney throat reductions
- Soaking-pit roof arches
- Reheating-furnace roof construction
- Pottery / shuttle kiln domes
- Cupola furnace tap-hole arches
- Combustion-chamber roof masonry
Shape catalogue
Download arch & wedge catalogue
PDF with all IS 1528 shape codes, dimensional drawings, radius-to-shape ratios and the standard chemistry table. Use for tender attachments and masonry planning.
Download AW catalogue (PDF)Quote request
Custom radius? Send the drawing
Upload the kiln drawing (internal radius, span, thickness, joint allowance) — we'll return an itemised per-piece shape count and quote within 24 business hours.
Frequently asked
Arch & wedge — questions buyers ask
What are arch and wedge fire bricks?
Arch and wedge fire bricks are pre-shaped fireclay refractories with a tapered profile — one face thinner than the opposite — designed to lay up into circular or curved structures such as kiln crowns, chimney throats and rotary kiln arches without on-site cutting.
What chemistry do arch and wedge bricks use?
Standard arch and wedge bricks share the dense-fireclay chemistry — Al₂O₃ 30 – 46%, SiO₂ 50 – 65%, max service temperature 1500 °C. High-alumina and silica grades are available on indent.
What are the standard arch and wedge sizes per IS 1528?
Per IS 1528 nomenclature: AW No.1 is 230 × 114 × 65 / 55 mm, AW No.2 is 230 × 114 × 65 / 45 mm, and AW No.3 is 230 × 114 × 65 / 35 mm. Edge and side variants — straight, side-arch, end-arch, key — are available. Custom drawings are quoted on indent.
Where are arch and wedge bricks used?
Primary use is kiln crown construction — ceramic tunnel kilns, lime kilns, rotary kiln arches, beehive coke ovens, industrial chimney throats and pottery kiln domes. Also used for soaking-pit arches and reheating-furnace roof construction.
Can you supply custom radius cuts to drawing?
Yes. Send your drawing (DWG or PDF) with internal radius, arch span, brick thickness and joint allowance — we will calculate the correct mix of arch and wedge sizes and quote per-piece. Templates and brick-by-brick stacking diagrams are available on request.
What is the typical MOQ for arch and wedge bricks?
Standard MOQ is approximately 5 – 10 MT for the dense-fireclay chemistry. Mixed-shape kiln-crown orders are quoted on a per-project basis with itemised shape counts.
What Incoterms are offered for export shipments?
We typically quote FOB Mundra or FOB Kandla. CIF, CFR and EXW are available on request. Sea-freight rates are confirmed at the time of booking.
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