Development of a Low Application Temperature FBE Coating

Fusion bonded epoxy (FBE) coatings have been used on pipelines as protection against corrosion for over 40 years.  They have been used as a stand-alone product in single layer systems and as a primer in dual and three layer systems. To achieve optimal performance, current FBE products require application temperatures in excess of 230°C for single layer systems and 200°C for three layer systems.  The introduction of high strength steels such as X80, X100 and X120 for use in pipeline construction has presented a challenge to the industry in terms of the availability of suitable coating systems.  High strength steels (particularly grades X100 and greater) cannot withstand pre-heat temperatures in excess of 200°C.  Exposure to the high heat required when coating with a typical FBE product results in the degradation of some of the key properties of these high strength steels. 

This paper will discuss the development and performance of a new generation FBE coating that can be applied at temperatures as low as 180°C for single layer systems and as low as 150°C for multi-layer systems.  Performance of this new product will be compared to the best performing current FBE products applied at 240°C.