Circulating Fluidized Bed (CFB) boiler often experience leaks in the wall tube due to corrosion and abrasion of the bed material after use that varies between 3 and 8 months. To avoid erosion corrosion. a coating was done in the form of Chrome Clad Tube Armor (CTA). In this research. https://www.allfixelectricales.shop/product-category/grill-door-hinge/