Epoxy Lining for Gas Transmission Pipes

Gas transmission pipelines often require an internal coating of epoxy in order to reduce friction between the pipe and the gas flowing inside it. The type of epoxy required is determined based on the type of gas flowing inside the pipe.

Distinction is made between "sour gas" and “non-Corrosive gas”. When sour gas flows through the pipe, the pipe is painted in multilayer epoxy which protects it against corrosion. When non-corrosive gas flows inside, the pipe is painted in a thin film of epoxy, 60 microns thick, which provides a smooth texture that reduces friction. This type of coating is also known as a “Flow Coat”.