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.spidertattooz.com/G-G-SSG-1-USR-Airsoft-AEG-Rifle-w-Variable-Angle-Stock-ETU-MOSFET-Red/