Welded ribs (IMAGE) Ural Federal University Caption The ribs are welded with a continuous seam so that the metal of the pipe and the rib becomes homogeneous. Credit UrFU / Alexander Volkov Usage Restrictions Please credit the author of the image: UrFU / Alexander Volkov License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.