These continuous ¨C annealing furnaces in Alloy Steel Grade F12 RTJ Flanges are usually heated by gas ¨C fired radiation tubes in order to separate combustion gases from the inert atmosphere surrounding the strip. Alloy Steel F12 Flanges has applications in many industries such as petrochemical, oil and gas, bulk liquid transportation, pharmaceuticals, chemical, pulp and paper manufacturing, power generation, textiles and others.