Precast Prefired Blocks For Burners have been produced under controlled environment. Developed under the supervision of seasoned refractory engineers, these blocks have +1 mm dimensional tolerance. These are totally protected against impact and abrasion. Provided product has maximum 2500 kg/cm2 compressive strength and their feasibility of shape ranges between 500 grams to 10 tons. These can resist alkali and these are compatible with acid prone working environment. Environment friendly content and low production cost are their key aspects.