Abstract: Described in the paper is the application of the coil-preparation stand to the spiral welded pipe production line, involving the work principle, operation process, and analysis and fixing of common problems, etc.When the pre-uncoiling technique is used at the coil preparation stage of manufacturing process for the spiral welded pipe, the steel plate butting time is tremendously reduced, and meanwhile the butt welding quality is improved.This technique is suitable for massive production of heavy-wall, large-sized and hi-grade spiral welded pipes.