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2017
|
Invention
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Gouging apparatus for welded steel pipe. The present invention relates to a gouging apparatus for... |
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2016
|
Invention
|
Apparatus and method for manufacturing pipe having variable cross-section. The present invention ... |
|
|
Invention
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Flexible mandrel for forming pipe mold. The present invention relates to a flexible mandrel for f... |
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2015
|
Invention
|
Multi-layer pipe manufacturing apparatus and method of manufacturing multi-layer pipes using the ... |
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|
Invention
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Multi-tube manufacturing device and method for manufacturing multi-tube using same. The present i... |
