Method for the manufacture of internally enhanced welded tubing

Metal fusion bonding – Process – With shaping

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Details

2281733, 72368, 219 613, 29890053, B23K 3300

Patent

active

053482131

ABSTRACT:
There is provided a method for the manufacture of a welded tube having an enhanced inner wall. A fin insert shapes the edges of a metallic strip prior to welding and minimizes the formation of a weld bead inside the tube. The portion of the edge of the metallic strip adjacent the outer surface of the tube is formed to a first angle, while that portion of the edge adjacent an inner wall of the tube is formed to a second, lesser angle.

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