alumiinilevyjen hitsausmenetelmä and method produced lng pallotankki or equivalent

摘要

A method of manufacturing a structure, preferably a curved structure, for example a spherical LNG-tank or the like, of welded together metallic, e.g. aluminium, plates, comprising welding flat metallic plates means (4,5) together by downhand welding whilst supporting the plate means on a tiltable structure (12a). The angle of the tiltable structure is controlled during the welding to provide a substantially constant inclination of the welding groove throughout the welding of the plate assemblies. A structure, e.g. a spherical LNG-tank, formed by the method is also disclosed. MATH