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Pipeline Field Joint Girth Welds

Last updated: March 28, 2019

What Does Pipeline Field Joint Girth Welds Mean?

These are circumferential butt welds applied in onshore pipeline string assembly, which leads to the formation of an area of unity between two types of pipes.

They are produced in order to facilitate efficient transportation of oils and gases by providing a continuous flow of the pipeline contents. Therefore, they are used in onshore pipeline and underground systems.


Corrosionpedia Explains Pipeline Field Joint Girth Welds

The formation of girth welds leads to the formation of field joints, which are prone to corrosion. The proneness to corrosion is generated from the substance modification of the two ends of the pipes to be joined.

The field joints are designed to provide the required strength and durability to withstand severe onshore and working conditions. There is a wide range of girth welds that can be used to form an insulation on top of the pipeline and underground system joints.

Butt welding is the common method of producing girth welds with the task of providing an insulation on the field joint, which is the area surrounding the welded end parts of a continuous pipeline.

The field joint in a pipeline system is the weakest point on the surface of a string of pipeline assembly, hence, proper modification and coating solutions are being invented to prevent cathodic currents and peeling.


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