A method of connecting together two unit elements (2, 4) of an undersea fluid transport pipe that is subjected to fatigue, by welding together two metallic or bi-metallic unit pipe elements that have been put into abutment via their respective free ends (2a, 4a), the welding being done by making three distinct weld beads (6, 8, 10), with a last weld bead (8) being deposited between two lateral first weld beads (6, 10), and being followed directly by controlled sanding of the weld beads in order to apply compression stresses on them.

A method of connecting together two unit elements (2, 4) of an undersea fluid transport pipe that is subjected to fatigue, by welding together two metallic or bi-metallic unit pipe elements that have been put into abutment via their respective free ends (2a, 4a), the welding being done by making three distinct weld beads (6, 8, 10), with a last weld bead (8) being deposited between two lateral first weld beads (6, 10), and being followed directly by controlled sanding of the weld beads in order to apply compression stresses on them.

Systems and methods suitable for cutting a material and deburring devices for performing a deburring operation on an edge of the material. Such a system includes a frame and table systems supported by the frame. Each table system includes a table for supporting the material and each table system is independently movable relative to the frame in lateral directions. A first carriage unit and second carriage units are supported by the frame and independently operable to travel in a travel direction transverse to the lateral directions. The first carriage unit includes multiple cutting devices, and the second carriage units includes multiple deburring devices. Each cutting device operates in conjunction with a corresponding one of the deburring devices, and the cutting and deburring devices are independently operable to cause the cutting devices and the deburring devices to simultaneously travel in the travel direction.

Systems and methods suitable for cutting a material and deburring devices for performing a deburring operation on an edge of the material. Such a system includes a frame and table systems supported by the frame. Each table system includes a table for supporting the material and each table system is independently movable relative to the frame in lateral directions. A first carriage unit and second carriage units are supported by the frame and independently operable to travel in a travel direction transverse to the lateral directions. The first carriage unit includes multiple cutting devices, and the second carriage units includes multiple deburring devices. Each cutting device operates in conjunction with a corresponding one of the deburring devices, and the cutting and deburring devices are independently operable to cause the cutting devices and the deburring devices to simultaneously travel in the travel direction.

Systems and methods suitable for shaping and cutting materials. Such a system includes first and second carriage units that are independently operable to travel in a travel direction parallel to a longitudinal axis of a table supporting the material. The first and second carriage units have first and second arms, respectively. A cutting device coupled to the first arm forms a slit in the material, and a deburring device coupled to the second arm forcibly removes burrs from the slit. The deburring device is behind the cutting device relative to the travel direction and forcibly removes burrs in the travel direction toward a breakthrough point of the slit. The second carriage unit oscillates parallel to the travel direction so that the deburring device moves toward and away from the breakthrough point of the slit to remove burrs at the breakthrough point.

Systems and methods suitable for shaping and cutting materials. Such a system includes first and second carriage units that are independently operable to travel in a travel direction parallel to a longitudinal axis of a table supporting the material. The first and second carriage units have first and second arms, respectively. A cutting device coupled to the first arm forms a slit in the material, and a deburring device coupled to the second arm forcibly removes burrs from the slit. The deburring device is behind the cutting device relative to the travel direction and forcibly removes burrs in the travel direction toward a breakthrough point of the slit. The second carriage unit oscillates parallel to the travel direction so that the deburring device moves toward and away from the breakthrough point of the slit to remove burrs at the breakthrough point.

A portable rail weld milling machine apparatus comprises a support structure comprising a milling tool, wherein the milling tool comprises a milling head for milling a railroad rail by moving the milling tool in a first direction longitudinal to parallel railroad rails, in a second direction lateral to the parallel railroad rails, and a third direction vertically.

Shaping systems and methods suitable for cutting a material, and deburring devices for performing a deburring operation on an edge of the material. Such deburring devices include a manifold having at least first, second, and third nozzles having first, second, and third axes on different first, second, and third planes, respectively. The first, second, and third nozzles are adapted to project first, second, and third gas streams therefrom in the first, second, and third planes axes. A mechanism is provided for orienting the manifold to project the first, second, and third gas streams at the edge of the material.

Shaping systems and methods suitable for cutting a material, and deburring devices for performing a deburring operation on an edge of the material. Such deburring devices include a manifold having at least first, second, and third nozzles having first, second, and third axes on different first, second, and third planes, respectively. The first, second, and third nozzles are adapted to project first, second, and third gas streams therefrom in the first, second, and third planes axes. A mechanism is provided for orienting the manifold to project the first, second, and third gas streams at the edge of the material.

A set of fittings for an FSW tool (friction-stir-welding tool) includes an adapter that can be inserted into a tool-receiving element and is designed to receive a welding rod, and a shoulder cap that includes a through-opening for the welding rod and the adapter. The shoulder cap includes a welding shoulder region adjacent to the through-opening on the outer surface. The adapter can be rotated in relation to the shoulder cap, about a longitudinal axis extending concentrically to the through-opening. The inner contour of the through-opening and a radial outer contour of the adapter have a conical shape at least on the end facing the welding point. In this way, a conical annular gap is created between the adapter and the shoulder cap, the width of which is adjustable by positioning the adapter along the longitudinal axis.