| 摘要 |
FIELD: storing or distributing liquids or gases. ^ SUBSTANCE: method comprises molding at least of two sections of the vessel whose one bottom has an opening, and joining the sections together by outer and inner seam weld. The inner welding is performed before the outer welding. The inner and outer seams are overlapped. The inner seam weld is performed through the opening in the bottom of one of the sections to be welded. ^ EFFECT: reduced labor and metal consumptions. ^ 1 cl, 3 dwg |
