What are the classifications of firebricks?
Standard refractory brick, usually the outline size of 230mmx114mmx65mm straight brick is called standard brick.
General type firebrick, shape size ratio (minimum and maximum size ratio, the same below) in the range of 1:4, without concave corners, holes or grooves, the single weight of 2 ~ 8kg clay brick, 2 ~ 6kg silicon brick, 2 ~ 1Okg high aluminum brick, 4 ~ 1Okg magnesium or magnesia aluminum brick, are called general type brick.
