... brick fired clay brick tunnel kiln refractory tunnel kiln Full automatic tunnel kiln for clay brick fired clay brick tunnel ... Capacity: 10,000,000pcs-20,000,00pcs Clay Brick/year (Standard Size)3,Fuel Type: Oil4,Sectional Dimension: 1100×1000mm ( ... Firing Period: 20h—22h9,Firing Mode: Direct Fired10,Control Mode: PLC System (Both Manual or Automatic Control) Full automatic tunnel kiln for clay brick