Question

why loops are provided in metal pipe lines?​

Answer 1

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The loops are known as expansion loops. They need to be placed in pipelines to enable the pipelines to contend with thermal expansion and contraction and other forces that can affect the pipeline. ... Steel piping systems are subject to movement because of thermal expansion/contraction and mechanical forces.

Answer 2

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The loops are known as expansion loops. They need to be placed in pipelines to enable the pipelines to contend with thermal expansion and contraction and other forces that can affect the pipeline.