Piggable pipelines have to be installed without any misalignment. A simple aid to assure correct alignment of a pipeline are welding rings. These rings provide an externally welded sleeve joint which prevents weld seams sagging into the piggable pipeline.
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If you are interested in a non-binding quotation, and would like further information about the benefits of this kind of product, please do not hesitate to contact us. We will be pleased to send you more detailed information, or to give you advice at a more personel level.