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Title: An economic assessment of mechanized welding of high-strength linepipe for the Australian pipeline industry
Category: Technical papers from Pipes & Pipelines International
Downloadable: Yes 
Catalog No.: 815
Date of Publication: April 2003
Price: $25.00 US
Authors: Professor Stephen A Blackman
Abstract: For a given pipeline, the choice of material and welding process can have a significant impact on the total capital expenditure. The use of higher-strength linepipe requires less steel, and the reduced tonnage can result in a significant cost reduction even after paying a premium £/tonne rate. For large-diameter pipelines, mechanized welding provides a much higher productivity than manual welding, and requires less labour and equipment, and so significant cost savings can be achieved. However, this is not the case for smaller pipe sizes and this, together with potential technology problems, means that mechanized welding can be significantly more expensive than manual welding.
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