4. Metal fusion bonding
  5. Process
  6. With condition responsive, program, or timing control

Werner Wennemann

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Method for making steel tubes or pipes of increased acidic gas r

Metal treatment – Compositions – Heat treating
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Method of and device for producing multi-layer pipes

Metal fusion bonding – Process – With condition responsive – program – or timing control
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Multi-layer helical seam steel pipe

Pipes and tubular conduits – Distinct layers – Bonded to each other
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Multi-layer helical seam steel pipe

Metal working – Method of mechanical manufacture – Assembling or joining
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Profile ID: LFUS-PAI-P-1291302

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