公开(公告)号：EP0746442A4

公开(公告)日：1997-03-12

申请号：EP95903663

申请日：1994-12-02

申请人： QUALITY TUBING INC

发明人： STAGG ROBERT E

IPC分类号： B21C37/08 ,  B21B15/00 ,  B23K9/025 ,  B23K33/00 ,  F16L9/16 ,  B23K101/06

CPC分类号： B23K33/004 ,  B21B15/0085 ,  B21C37/0826 ,  B23K2201/06 ,  B23K2201/16 ,  F16L9/165

摘要： A dual weld for joining strips to be formed into coiled tubing. Tubing is formed from a first strip (15a) and a second strip (15b), the first and second strips of the same width. A planar end surface (Pa) is formed on an end of the frist strip. Similarly, a planar end surface (Pb) is formed on an end of the second strip. A composite strip is formed by welding the planar end surface of the first strip to the planar end surface of the second strip to form a dual bias weld. Excess-weldment is then removed from top, bottom and edge surfaces of the composite strip such that the width of th weld is identical to the width of the first and second strips. Coiled metal tubing is then formed from the composite strip.

公开(公告)号：EP0746442A1

公开(公告)日：1996-12-11

申请号：EP95903663.0

申请日：1994-12-02

申请人： QUALITY TUBING INC.

发明人： STAGG, Robert, E.

IPC分类号： B21C37 ,  B23K9 ,  B23K33 ,  F16L9 ,  B21B15

CPC分类号： B23K33/004 ,  B21B15/0085 ,  B21C37/0826 ,  B23K2201/06 ,  B23K2201/16 ,  F16L9/165

摘要： A dual weld for joining strips to be formed into coiled tubing. Tubing is formed from a first strip (15a) and a second strip (15b), the first and second strips of the same width. A planar end surface (Pa) is formed on an end of the frist strip. Similarly, a planar end surface (Pb) is formed on an end of the second strip. A composite strip is formed by welding the planar end surface of the first strip to the planar end surface of the second strip to form a dual bias weld. Excess-weldment is then removed from top, bottom and edge surfaces of the composite strip such that the width of th weld is identical to the width of the first and second strips. Coiled metal tubing is then formed from the composite strip.