B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 9/23 (2006.01) B23K 5/00 (2006.01) B23K 9/028 (2006.01) B23K 9/235 (2006.01)
Patent
CA 2088433
An improved method for making a composite tube (10) to a carbon steel tube (16) joint or a composite tube (10) to a carbon steel header (50) joint is achieved by specially preparing the composite tube (10) by removing the cladding (12) from one end (24) to a predetermined length to provide base carbon steel material (14). The end (24) of the composite tube has cladding (12) tapered at a predetermined angle. This end (24) is then expanded. The composite tube (10) is then welded to the carbon steel tube (16) with fewer weld passes while also eliminating the stainless steel weld pass.
Campbell Delbert J.
Lopez Antonio
Babcock & Wilcox Company The
Ridout & Maybee Llp
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