spirally welded tube, spiral welded tube, spiral welded pipe, spiral-weld tube, spiral-weld pipe, spiral tube, helical welded tube, helical welded pipe
keevistoru, mille keevisõmblus on toru pikitelje suhtes spiraalne (vrd pikiõmblustoru), pipe or tube rolled and welded according to a preferred helical angle (compare: longitudinally welded tube)
