公开(公告)号：US20190091811A1

公开(公告)日：2019-03-28

申请号：US16206435

申请日：2018-11-30

Applicant: SAIPEM S.p.A.

Inventor： Roberto LEGORI ,  Marco NOVELLO ,  Eric KERDILÉS ,  Rachid YOUSFI ,  Andrea PROVESI

IPC: B23K37/053

Abstract: An internal line-up clamp (20), for aligning two pipes to be welded together, includes a hi-lo measurement system, for example includes a laser source (24) and camera system (22), mounted on the internal line-up clamp (20) and arranged to make a hi-lo measurement (d), indicative of the degree of alignment of the pipes (10a, 10b). The measurement may be made when two pipes are clamped together by means the internal line-up clamp (20). The pipes may then be welded together, whilst the pipes remain clamped together in the same position, and whilst the hi-lo measurement system remains inside the pipes.