Glossary
1 MIN READ
Longseam Welding
The automated or manual process of executing a longitudinal weld joint to close a rolled plate shell into a complete, high-strength cylinder.
Technical FAQ
Wind tower and monopile manufacturers need to choose the right automation level for handling variable conical sections. Adaptive systems rely on shop cranes for initial plate placement and use pushers for fine alignment, whereas extended systems feature automated manipulators that continuously adjust, align, and feed plates for both cylinders and cones. An extended feeding system delivers continuous, automated cone processing without crane dependence, maximizing safety and speed. Davi's Smart Line for wind energy utilize extended continuous feeding technology to optimize cycle times.
The heat introduced during longitudinal seam welding can distort heavy steel cylinders out of roundness tolerances. Re-rolling passes the welded shell back through the machine to calibrate the geometry and eliminate flat spots near the weld seam. It restores true roundness across the entire cylinder, ensuring it complies with international manufacturing codes and matches adjacent sections perfectly. The flexible geometry of the Davi MAV 3-roll system makes it well-suited for high-tonnage calibration and re-rolling operations.