Patent ID: 6289585
Filing Date: 2001-09-18
Classification: B21D,B23K,F28F,Y10T

Abstract:
A method of attaching pipes, said pipes comprising a header and at least one tube, said method comprising the steps of:A. Cutting said header longitudinally into a header first part and a header second part, said header first part comprising a header first part inside surface, a header first part outside surface, and a pair of header first part cut faces; said header second part comprising a header second part inside surface, a header second part outside surface, and a pair of header second part cut faces;B. Making one header bore into said header first part for each tube to be attached to said header;C. Placing one extreme of each said tube into a corresponding said header bore;D. Permanently attaching each said tube to said header first part;E. Inspecting the attachment between each said tube and said header first part both at said header first part inside surface and at said header first part outside surface;F. Juxtaposing each said header first part cut face with a corresponding header second part cut face; andG. Re-attaching said header first part to said header second part.