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1. (WO2013152752) DEVICE FOR CONNECTING THE ENDS OF PIPES MADE OF STEEL BY MEANS OF AN ORBITAL WELDING PROCESS

Pub. No.:    WO/2013/152752    International Application No.:    PCT/DE2013/000179
Publication Date: Fri Oct 18 01:59:59 CEST 2013 International Filing Date: Wed Mar 27 00:59:59 CET 2013
IPC: B23K 37/053
B23K 26/28
B23K 31/02
B23K 9/028
Applicants: SALZGITTER MANNESMANN LINE PIPE GMBH
Inventors: KOCKS, Hans-Jürgen
WINKELS, Jörn
KEITEL, Steffen
NEUBERT, Jan
RUDE, Sebastian
Title: DEVICE FOR CONNECTING THE ENDS OF PIPES MADE OF STEEL BY MEANS OF AN ORBITAL WELDING PROCESS
Abstract:
The invention relates to a device for connecting the ends of pipes, which are already aligned and tack-welded and which are made of steel in particular, by means of an orbital welding process using a welding joint which is formed by the pipe ends and using tools which can be moved about the welding joint in an orbital manner for welding and checking the welding seam. The device consists of guide base plates which can be placed on both sides at each pipe end in the region of the welding point and which can be rigidly clamped to said pipe ends. The guide base plates centrally have a circular recess with a radial opening for the feed-through of the pipes to be welded and for centrally receiving said pipes in the recess. The guide base plates comprise clamping elements for clamping the guide base plates to the pipe ends, said clamping elements being rigidly connected to each guide base plate face facing away from the welding joint, and a frame for receiving the welding and checking tools, said frame being rotatably mounted between the guide base plates on the inner faces facing the welding joint and being centrally pivotal about the pipe ends by at least 360°.