Fusion bonded epoxy coating
Fusion bonded epoxy coating, also known as fusion-bond epoxy powder coating and commonly referred to as FBE coating, is an epoxy-based powder coating that is widely used to protect steel pipe used in pipeline construction from corrosion. It is also commonly used to protect reinforcing bars (though being phased out as of 2005) and on a wide variety of piping connections, valves etc.
Source: Wikipedia — Fusion bonded epoxy coating (CC BY-SA 4.0)