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Service Information
What is a Field Joint? The area where two pipe spools or pipe joints are welded together is known as the field joint. This is a significant area because the pipe is welded here and its surface is uncoated. Subsequently, the field joint is exposed to the environment and susceptible to corrosion.
Field-joint coatings are applied on offshore lay vessels where offshore pipelines are welded together in either single or double joint segments. Exposure in a hostile environment and vulnerable to corrosion, the welded area is often the weakest point within a pipeline.
The typical field joint coatings used for offshore pipelines include liquid applied materials such as epoxies, urethanes, epoxy/urethanes, heat shrinkable sleeves or sometimes fusion bonded epoxy among other materials.
What is the coating on gas pipe?
For buried systems (the majority of most oil and gas pipelines), the almost-universal standard pipeline coating is fusion bond epoxy (FBE) powder systems.
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