How To Check High Alumina Bricks Quality
The excellent high-alumina brick surface is lubricated, the four sides are flat, no break angle, no cracks.
By Weight : first-class high-aluminum brick weights about 4.5 kg. The secondary high-alumina bricks weighs 4.2 kg, and the third-grade high-alumina brick is about 3.9 kg. If any
cracks, uneven corners, and broken angles are found, It is an unqualified product.