... the made method, it can be divided into burnt brick, unburned brick,electric smelting brick. According the shape and size, it can be ... the snake, humping and the mortar is unwell, etc are common faults.According to design, the expansion gap of firebrick must ... .Firm whipstitch. You must process finely brick with brick cutter. Don’t process brick with hand. Neck brick should be larger 70% than other ...