Machinery molded clinker brick in size 250x120x65 mm with perforation (15%). Extremely high fired at a very high temperature above the sintering limit. Original coal fired in brick Kiln. As a result of over firing, the clinker brick may be deformed, melted, and may have scratches, cracks and slagging on surface. Over fired clinker bricks are sold as off-grade bricks. without certificates.
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Example of use over fired clinker clay bricks
