Coating

Coating is the application of a firmly adhering layer of shapeless material to the surface of a workpiece. 

Flame arrester Device fitted to the opening of an enclosure, or to the connecting pipe work of a system of enclosures, and whose intended function is to allow flow but prevent the transmission of a flame. A coating Coating Coating is the application of a firmly adhering layer of shapeless material to the surface of a workpiece. can be either a single layer or several layers. A distinction is made between chemical, mechanical, thermal and thermomechanical processes, depending on how the coating is applied. The thickness of the coating differs depending on the process and application purpose.