B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
78/49
B23K 5/02 (2006.01) B21C 37/08 (2006.01) B23K 5/08 (2006.01) B23K 9/032 (2006.01)
Patent
CA 1053036
ABSTRACT OF THE DISCLOSURE The present invention provides a process for multiple- rod internal welding for the production of spirally seamed welded pipes having small diameters of approximately 20 to 30" in which both the welding and the strip forming are effected at an angle .alpha.' to the vertical median plane of the pipe which is in an approximate range between 5 and 30° and that guide motion of the pipe occurs in a plane, which is inclined by an angle a in the same range as the angle .alpha.' with respect to the horizontal. The present invention also provides a device for multiple-rod internal welding for the production of spirally seamed welded pipes having small diameters of approximately 20 to 30" compris- ing forming roll sets and internal welding point which are located in a plane at an angle .alpha. in the approximate range from 5 to 30° with respect to the vertical median plane of the pipe and a pipe-swinging device having a fulcrum disposed at an angle .alpha. in the same range as the angle .alpha.' with respect to the horizontal.
247061
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