Flash butt welding of steel pipeline. Photograph courtesy of Professor Nobutaka Yurioka.
Machine for the flash butt welding of steel pipes. Photograph courtesy of Professor Nobutaka Yurioka.
Gas metal arc girth-welding of stel pipe. Photograph courtesy of Professor Nobutaka Yurioka.
Manual metal arc girth-welding of steel pipeline. Photograph courtesy of Professor Nobutaka Yurioka.
Barge for laying underwater pipelines. Photograph courtesy of Professor Nobutaka Yurioka.
