Abstract: An internal clamping and welding device for joining tubes by their distal ends, the device comprising movement means in order to be moved inside the tubes, separate clamping means for cooperating with the inner surfaces of the tubes to be welded, and a welding head mounted so as to be able to both rotate about a longitudinal axis of the tubes, and also pivot in order to be tiltable relative to a support of the clamping means.

Abstract: An apparatus for coating pipes includes a spraying device rotatable around a pipe. The coating apparatus includes a guiding ring mounted around the pipe and a carriage to be mounted on the guiding ring, the carriage being motor driven, the motor being enclosed into the carriage and the carriage including an adjustable device to be detachably mounted on the guiding ring.

Abstract: A pipe joint coating for welded ends of pipes forming a pipeline. A last and third layer of a 3LPP coating system covering at least a circumferential weld area of the pipe joint is a heated sheet applied around the pipe with a machine including a mounting frame and a transport carriage rotatably movable on the mounting frame to move circumferentially about the pipe joint, and a roller applying an adjusted pressure to the sheet against the pipe and adapting to eccentricity or ovality of the pipe. The sheet is pressed below the pipe away from its overlapping ends, a first part of the sheet is then applied when the roller is rolled in a first direction, and a second part of the sheet is applied by the roller rolled back in the reverse direction around the pipe. The sheet is dimensioned to obtain an overlapped area between its extremities.

Abstract: A pipe joint coating for welded ends of pipes forming a pipeline. A last and third layer of a 3LPP coating system covering at least a circumferential weld area of the pipe joint is a heated sheet applied around the pipe with a machine including a mounting frame and a transport carriage rotatably movable on the mounting frame to move circumferentially about the pipe joint, and a roller applying an adjusted pressure to the sheet against the pipe and adapting to eccentricity or ovality of the pipe. The sheet is pressed below the pipe away from its overlapping ends, a first part of the sheet is then applied when the roller is rolled in a first direction, and a second part of the sheet is applied by the roller rolled back in the reverse direction around the pipe. The sheet is dimensioned to obtain an overlapped area between its extremities.

Abstract: A method for mutually positioning tubes. End faces, which includes a generally annular and generally circular end surface near an inner surface of the tube and a beveled edge surface connecting the end surface to an outer surface of the tube, are provided on first and second tubes, respectively. Plural clamping cylinders are engaged with the first and second tubes, respectively. Each cylinder is radially arranged onto and evenly distributed around respective tubes. The first and second tubes are pre-positioned relative to each other such that their respective end faces are opposite each other. At least one radial offset is assessed between the respective end surfaces of the first and second tubes. The clamping cylinders of the first and/or second tube are moved relative to each other in accordance with the assessed radial offset based on an optimization of areas in which their respective end surfaces coincide.

Abstract: An apparatus for coating pipes includes a spraying device rotatable around a pipe. The coating apparatus includes a guiding ring mounted around the pipe and a carriage to be mounted on the guiding ring, the carriage being motor driven, the motor being enclosed into the carriage and the carriage including an adjustable device to be detachably mounted on the guiding ring.

Abstract: A welding device for weld-assembly of first and second parts, defining therebetween a sealing surface, along a weld joint. The device includes: a supporting mechanism configured to move the device along the weld joint; at least one welding mechanism; and an automatic command and control mechanism. The welding mechanism is mounted on a single supporting element oriented substantially parallel to the sealing surface. A first motorized actuator secured to the supporting mechanism includes a first projection cooperating with an open housing in a first end face of the supporting element, and a second motorized actuator secured to the supporting mechanism includes a second projection cooperating with an open housing in a second end face of the supporting element. The first and second projections are movable in a plane substantially perpendicular to the sealing surface and generate controlled movement of the supporting element of the welding mechanism.

Abstract: The invention relates to a device for centering and clamping conduits which are preferably made from alloy steel and which are positioned end to end in order to be welded to form a pipeline. The invention comprises: means for centering and clamping two conduits that are to be welded, optional leak-tight partition means which define an inerting chamber at the mating surface, and inert gas distribution means for creating a protective atmosphere at the mating surface. The inventive device also comprises at least means for regulating the flow of inert gas and/or the supply pressure of said inert gas as a function of the concentration of O2 measured in the protective atmosphere and/or the pressure measured within said atmosphere, such as to maintain the O2 content of the atmosphere below a pre-determined alarm threshold value and/or the pressure of the atmosphere below a pre-determined threshold value.

Abstract: A system for identifying elements involved in joints of elements configured to form a duct, such as a pipeline, which works on element identifiers for an element identification code. The system includes an element identifier reader and a management device for supplying by a combination device the joint identification codes between two elements according to element identification codes of the two elements. The system is also useful for production of tanks for hydrocarbon by-products and for control and maintenance, for example, of pipeline networks and tanks.

Abstract: A device for centering and internal clamping of tubular parts such as metal conduits, placed end-to-end so as to be welded to form metal pipelines is provided.

Abstract: A mechanical system for automatic guiding of one or more torches of a welding unit in a groove delimited by chamfered end surfaces of two metal parts to be welded together, including a main carriage moving along a stationary guide relatively parallel to the groove, a secondary carriage that is connected to the main carriage by a hinged linking assembly and that includes a torch supporting unit and a guiding device including bearing members in contact with the surfaces of the metal parts bordering the groove and sensing members that enter the groove. The hinged linking assembly includes three pivoting axis.

Abstract: Clamp for mechanical parts such as tubes or pipes, comprising a flange (5) with parts (13A, 13B, 13C) connected to one another so as to be pivotable as far as a closed position in which they are continuous. A locking device may be actuated when the flange is closed. The clamp further comprises supports (55; 57) by which rails (49) are connected to the parts with limited freedom of relative movement. The adjacent end faces of the rails have mating surfaces forming a connection by positive locking, which is active in the vicinity of the closed position. Each connection guides the end faces relative to one another into a working position in which the rails (49) form a guide path for tools, and helps to maintain this position when the clamping device is actuated.

Abstract: A device for aiding working of large mechanical parts includes a first flange and a second flange for holding in position a first part and second part. Each flange includes a support and actuators that can be controlled individually and each includes a mobile portion. The actuators are mounted on their respective supports such that their mobile portions are displaceable substantially in a same plane to project from the supports. The actuators of the second flange are mounted on the second support in an equivalent manner to the actuators of the first flange. The first flange and the second flange are connected to one another with possibility of relative displacement under action of additional actuators. The displacement includes a component of translation substantially perpendicular to the same planes of the mobile portions of the actuators.

Abstract: To abut hollow profiled parts, at least two frames includes actuators distributed in an equivalent manner to one another. Each actuator includes a portion which can be displaced in a plane common to the other actuators of the frame so as to project from the frame; the frames are each positioned in an end region of a respective part. The equivalent actuators are mutually opposed; the mobile portions of the actuators of one frame and of the actuators of the other frame are displaced into respective working positions, in which they exert forces on the wall of their respective part so that the end regions of these parts match one another; the parts are fixed to one another in their respective end regions.

Abstract: The present invention provides a method of positioning a first pipe facing a second pipe, the end of the first pipe being provided with a first chamfer and a first substantially annular surface placed close to its inside surface, the end of the second pipe being provided with a second chamfer and with a second substantially annular surface located close to its inside surface, said first and second annular surfaces defining a joint plane substantially perpendicular to the longitudinal axes of each of said pipes. According to the invention, a plurality of clamping actuators regularly distributed around the first and second pipes are used and controlled to shift the second pipe relative to the first pipe parallel to said joint plane as a function of a radial offset H, H? between the first and second annular surfaces so as to guarantee a maximum facing area, referred to as a “coincidence” area for said annular surfaces.

Abstract: A device for centering and clamping tubular parts such as conduits designed to form pipeline pipes of the type consisting of an elongated cylinder comprising in particular a clamping device, such as at least clamping shoes arranged over its entire periphery and adapted to be radially mobile projecting from said cylinder to be urged to press against the walls of the conduits to be clamped as well as means for moving each of the series of clamping shoes between a position projecting from the cylinder and a position wherein they are retracted into the cylinder

Abstract: The present invention concerns an automatic welding device of MIG/MAG type consisting of at least one carriage holding at least one welding head comprising at least one torch (1) guiding a consumable electrode wire along a parting plane (P) between the pipes to be welded, which brings the current to the end of the electrode wire in order to generate an electric arc and ensure melting of the filler metal, The invention consists of the fact that the welding head therefore presents a welding torch (1) intended to be centered in relation to the parting plane (P) to ensure the penetration pass and also bears at least two other so-called tracking welding torches (2, 3), respectively positioned one after the other following the first so-called central welding torch (1) and offset respectively on both sides of the so-called central torch (1) in order to make lateral passes. Application to the welding of metal pipes in order to form pipelines.

Abstract: The invention relates to an orbital carrier (2) for a device for butt-welding pipes (C, C) to form a pipeline, said device comprising at least one welding carriage (1) supporting at least one welding head (6) which has at least one welding torch, said orbital carrier (2) surrounding the pipes (C, C) to be welded and being designed to enable positioning and movement in the plane of the joint between the pipes (C, C) of said welding carriage or carriages (1), and said orbital carrier (2) also being movable translationally along the pipeline as it grows. The invention consists in the fact that said orbital carrier (2) consists of at least two components (20) in the form of segments of a circle able to be connected together to form the orbital carrier (2) around the pipes (C, C) during a welding phase and also to allow said orbital carrier (2) to be opened, at least at the top, to allow it to pass an obstruction on the outside of the pipe (C, C). Application: the welding of pipes (C, C).

Abstract: A method for mutually positioning tubes. End faces, which includes a generally annular and generally circular end surface near an inner surface of the tube and a beveled edge surface connecting the end surface to an outer surface of the tube, are provided on first and second tubes, respectively. Plural clamping cylinders are engaged with the first and second tubes, respectively. Each cylinder is radially arranged onto and evenly distributed around respective tubes. The first and second tubes are pre-positioned relative to each other such that their respective end faces are opposite each other. At least one radial offset is assessed between the respective end surfaces of the first and second tubes. The clamping cylinders of the first and/or second tube are moved relative to each other in accordance with the assessed radial offset based on an optimization of areas in which their respective end surfaces coincide.

Abstract: The invention relates to a device providing assistance in the working of pipes, including: a plate (5) having an internal cavity and comprising parts (13A, 13B, 13C) assembled together such that they can pivot to occupy a closed position in which they are joined to form a ring; and a plate locking device. The adjacent ends of two plates (13A, 13B, 13C) include corresponding surfaces that are shaped to cooperate and establish a connection as the plate (5) moves into the closed position. Each connection comprises two complementary surfaces (37) that come into contact with one another in the closed plate position. The locking device comprises at least one catch which can be actuated in said position and which acts on the adjacent ends of the plates (13A, 13B, 13C) in order to clamp the complementary contact surface against one another.