Established 1979ISO 9001:2015 CertifiedWankaner, Gujarat, India
+91 99746 66341 [email protected]
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Checker Bricks

Honeycomb heat-storage bricks for hot blast stoves and regenerators. 7, 19 and 37-hole patterns in fireclay, high alumina and low-creep grades, zoned to your stove.

01

Store

Hot combustion gases pass down through the aligned flues and heat the checker mass.

02

Release

The flow reverses. Cold blast air rises through the same flues and leaves at high temperature.

03

Repeat

Stoves cycle continuously, so creep resistance and dimensional accuracy decide campaign life.

Seven-hole checker brick showing the interlocking scalloped edge
7-HOLE PATTERN
Stacked 19-hole checker bricks ready for dispatch
19-HOLE PATTERN, STACKED
Range

Choose the hole pattern.

More, smaller holes give more heating surface per cubic metre. Fewer, larger holes give better stability and cleaner flues. Figures shown are typical industry values.

Illustration of 7, 19 and 37-hole checker bricks side by side
7, 19 and 37-hole patterns at a glance. The interlocking scalloped edges keep flues aligned course to course.
Hole pattern01

7-Hole Checker Bricks

Few, large flues. They resist clogging from dust, and the raised rings locate each course on the one below.

Typical hole Ø≈ 43 mm
Heating surface≈ 38 m²/m³
Crown sizesTo drawing
Best forHot blast stoves where stability and clean flues matter most
Request datasheet
Hole pattern02

19-Hole Checker Bricks

A balanced pattern. It gives more heating surface than 7-hole while keeping flues large enough for reliable gas flow.

Typical hole Ø≈ 30 mm
Heating surface≈ 49 m²/m³
Crown sizesTo drawing
Best forModern hot blast stoves, regenerator upgrades
Request datasheet
Hole pattern03

37-Hole Checker Bricks

High-efficiency pattern. Many small flues pack the most heating surface into each cubic metre of checker work.

Typical hole Ø≈ 20 mm
Heating surface≈ 69 m²/m³
Crown sizesTo drawing
Best forHigh-efficiency stoves targeting higher blast temperature
Request datasheet
Stove zoning

Grade by zone, not one grade for all.

HOT FLUE GAS · HEATING TOP ZONE · HOTTESTLow-creep high alumina, mulliteCarries the highest temperatures and load at the top of the checker column.MIDDLE ZONEHigh alumina, low-creep gradesHandles the transition as blast and flue temperatures change each cycle.BOTTOM ZONE · COOLERFireclayWhere temperatures stay below about 900 °C, fireclay checkers do the job economically.
Applications

Where our checkers work.

01

Blast furnace hot stoves

Checker columns for internal and external combustion stoves.

02

Glass furnace regenerators

Heat recovery checker packs for regenerative glass tanks.

03

Other regenerative heat exchangers

Custom checker shapes for air preheaters and heat recovery units.

Specify your next lining with confidence.

Share your furnace, kiln or vessel details. Our technical team will recommend the right grade and send the datasheet.

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Crown Ceramics

Alumina bricks, monolithics and speciality refractories, manufactured in Wankaner, Gujarat since 1979.

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