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2013
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Invention
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Method for producing welded pipes from steel. The invention relates to a method for producing wel... |
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2012
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Invention
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Method for producing a joining seam at band ends of steel during the continuous production of wel... |
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2010
|
Invention
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Method for producing welded helical-seam tubes having optimized tube geometry. In a method for pr... |
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|
Invention
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Method for producing welded helical-seam tubes having optimized tube geometry. The invention rela... |
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|
Invention
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Method for producing welded helical seam tubes with optimized tube geometry. The invention relate... |
