A suction bucket for a seabed foundation for an offshore facility is provided. The suction bucket is arranged for being embedded into a marine sediment. The suction bucket includes a lid and a sidewall. The sidewall is segmented into a first circumferential segment and at least a second circumferential segment. The first circumferential segment is connected with the second circumferential segment. The first circumferential segment and the second circumferential segment are attached to the lid of the suction bucket. Furthermore, the first circumferential segment and the second circumferential segment each contains at least one substantially planar section. Furthermore, a method to manufacture a suction bucket for a seabed foundation for an offshore facility is also provided.

A suction bucket for a seabed foundation for an offshore facility is provided. The suction bucket is arranged for being embedded into a marine sediment. The suction bucket includes a lid and a sidewall. The sidewall is segmented into a first circumferential segment and at least a second circumferential segment. The first circumferential segment is connected with the second circumferential segment. The first circumferential segment and the second circumferential segment are attached to the lid of the suction bucket. Furthermore, the first circumferential segment and the second circumferential segment each contains at least one substantially planar section. Furthermore, a method to manufacture a suction bucket for a seabed foundation for an offshore facility is also provided.

A system may include a current source; a first metal or alloy component with a first major surface electrically coupled to the current source; a second metal or alloy component with a second major surface electrically coupled in series to the first component and the current source via an external electrical conductor, where the first and second major surfaces are positioned adjacent to each other to define a joint region; a metal or alloy powder disposed in at least a portion of the joint region; and a controller. The controller may be configured to cause the current source to output an alternating current that conducts through the first component and the second component to induce magnetic eddy currents, magnetic hysteresis, or both within at least a portion of the metal or alloy powder disposed in at least the first portion of the joint region.

Guide device for use in the processing, in particular welding, of curved surfaces, in particular pipe surfaces, comprising a flexible elongate body provided with a guide for processing means; tensioning means for tensioning the flexible body around the curved surface; wherein the flexible body is provided along its length with indicators arranged according to a determined pattern, this pattern being such that a determined position along the flexible body can be inferred on the basis of the detection of the indicators.

A welding method and system (4) using a robotic arm (10), a welding robot (18) and a welding table (2) placed at an angle from horizontal to hold two C-channels (6 and 8) facing each other to maintain position and be welded together. C-channels (6 and 8) face each other to form a closed channel at increased welding speed with less materials having resulting benefits including constant welding, less distortion, and less welding material. Welding begins with restraining C-channels (6 and 8) in conjunction with the angled welding table (2). A robotic arm (10) handles C-channels (6 and 8) to move, place and restrain them relative to each other and the welding table (2). A pressing tool (12) may be a set of pressure-exerting tools (26). A welding robot (18) with a seam finding system (24) preferably welds the restrained C-channels (6 and 8) from top to bottom.

A welding method and system (4) using a robotic arm (10), a welding robot (18) and a welding table (2) placed at an angle from horizontal to hold two C-channels (6 and 8) facing each other to maintain position and be welded together. C-channels (6 and 8) face each other to form a closed channel at increased welding speed with less materials having resulting benefits including constant welding, less distortion, and less welding material. Welding begins with restraining C-channels (6 and 8) in conjunction with the angled welding table (2). A robotic arm (10) handles C-channels (6 and 8) to move, place and restrain them relative to each other and the welding table (2). A pressing tool (12) may be a set of pressure-exerting tools (26). A welding robot (18) with a seam finding system (24) preferably welds the restrained C-channels (6 and 8) from top to bottom.

This welded structure member includes a base metal member including a first surface and a second surface; a joined metal member including an abutting surface of which an end surface abuts onto the first surface; a weld bead which is formed on the first surface; and a weld overlay section which is formed on the second surface of the base metal member, in which the weld bead includes a weld bead end section in a position which is separated to the front of the abutting end section.

An arc spot welding method able to give a predetermined weld bead diameter or excess metal height in a back surface weld bead of arc spot welding and able to give a welded joint excellent in both strengths of TSS and CTS and a welding apparatus for working the same are provided. A steel sheet containing carbon in 0.2 mass % or more and having a sheet thickness “t” and at least one steel sheet containing carbon in 0.2 mass % or more and having a sheet thickness of “t” or more are arranged overlaid, a backing plate comprising a non-contact part and a contact part maintaining the back surface of the lower side steel sheet and the non-contact part in a non-contact state is arranged so that the contact part contacts the back surface of the lower side steel sheet at a position exceeding 3t from the circle equivalent center of the back surface weld bead, and arc generation and short-circuit conduction where the welding voltage between the welding wire and upper side steel sheet becomes 10V or less are alternately repeated so that the time period of the short-circuit conduction becomes over 30% to less than 60% per cycle to thereby weld the steel sheet.

An arc spot welding method able to give a predetermined weld bead diameter or excess metal height in a back surface weld bead of arc spot welding and able to give a welded joint excellent in both strengths of TSS and CTS and a welding apparatus for working the same are provided. A steel sheet containing carbon in 0.2 mass % or more and having a sheet thickness “t” and at least one steel sheet containing carbon in 0.2 mass % or more and having a sheet thickness of “t” or more are arranged overlaid, a backing plate comprising a non-contact part and a contact part maintaining the back surface of the lower side steel sheet and the non-contact part in a non-contact state is arranged so that the contact part contacts the back surface of the lower side steel sheet at a position exceeding 3t from the circle equivalent center of the back surface weld bead, and arc generation and short-circuit conduction where the welding voltage between the welding wire and upper side steel sheet becomes 10V or less are alternately repeated so that the time period of the short-circuit conduction becomes over 30% to less than 60% per cycle to thereby weld the steel sheet.

A steel plate frame and a thin plate are made of different materials. A plurality of through holes are formed in a portion of the thin plate to be placed on the steel plate frame. A plurality of projections 6c are formed on a support plate, each of the projections being allowed to be inserted into a corresponding one of the through holes. An adhesive is applied to a portion of the steel plate frame on which the thin plate is placed. The thin plate is placed on the steel plate frame, and the steel plate frame and the thin plate are bonded together by the adhesive. The support plate is placed on the thin plate to insert the projections into the through holes. The projections and the steel plate frame are welded to form a plurality of welded spots.