United States Department of Transportation
i
Hybrid Laser/GMAW of High Strength Steel Gas Transmission Pipelines
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2008-07-01
[PDF-3.43 MB]
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Abstract:Pipelines will be an integral part of our energy distribution systems for the foreseeable future. Operators are currently considering the installation of tens of billions of dollars of pipeline infrastructure. In a number of cases, the cost of exporting the product will have a dominating influence on the viability of the upstream production facilities. These facilities will progress only if the industry can substantially reduce capital expenditure and improve design for pipeline integrity. Whether the application is an onshore gas transmission line or a deepwater pipeline, there is a need to constantly improve the productivity, quality, integrity, and reliability of pipeline girth welds to reduce construction costs. Despite significant investment, oneshot welding and power beam processes have failed to achieve real benefits in pipeline construction.
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