Abstract: Submerged combustion burners having a burner body and a burner tip connected thereto. The burner body has an external conduit and first and second internal conduits substantially concentric therewith, forming first and second annuli for passing a cooling fluid therethrough. The burner includes a generally central flow passage for a combustible mixture, the flow passage partially defined by an inner wall of the burner tip. The burner tip has an outer wall and crown connecting the inner and outer walls. The inner and outer walls and crown comprise materials having greater corrosion and/or fatigue resistance than the burner external conduit. The burner tip is connected to the burner body by inner and outer connections, at least one of which includes members interference fit to the burner tip and burner body, the members welded, soldered, or brazed together, in certain instances by fiber laser welding.

Abstract: A locking connector is provided that comprises first and second connector parts configured to releasably engage with one another along a longitudinal axis of the connector. The first connector part comprises a plurality of circumferentially disposed resiliently bendable latching fingers each finger attached at one end to the first connector and having an ear at an opposite end. The second connector part comprises one or more recesses to receive the ears of the fingers. The connector comprises a locking ring, moveable along the axis such that in a first position the ears engage in the recesses to lock the connector parts together, and in a second position the ears are free to move radially outwards to enable the connector parts to be separated.

Abstract: A system includes a unit of a first part, and a proximal portion through an intermediate portion extended by a distal portion including a first extremity surface. A second part with a second portion includes a second surface to be friction welded with the extremity surface. A second portion is bordered laterally by a lateral surface and has a proximal portion, which extends through an intermediate portion extended by a distal portion. The distal portion of the second portion is carried in a malleable state during a friction welding. The intermediate portion of the second portion flares from the distal portion by the second towards and till the proximal portion of the second portion such that the bead of material from the deformation of the distal portion of the second portion during welding rubs against the lateral surface of the intermediate portion of the second portion during welding.

Abstract: A welded joint of a lined pipeline has a main pipe and an extension piece having a generally tubular shape, an inner wall and an annular weld connecting the extension piece to the main pipe. A liner extends through the main pipe and partially into the extension piece. A compression ring includes a flange and a compression portion. The compression portion engages the liner internally and compresses the liner radially outwardly against the extension piece so that the liner is sealed with the compression ring.

Abstract: A threaded tubing end assembly having a tubing with a transverse first end, a tubing through bore, and a longitudinal weld seam; a threaded adapter having an adapter through bore, and an adapter body having a threaded first end having a male thread and an opposed second end with an external transverse shoulder surrounding a reduced diameter elongated shank with an external longitudinal slot; a circumferential weld; and a longitudinal weld.

Abstract: A coupling system including a coupling for fastening to one end of a pipe via a fastening connection; and a sleeve surrounding the fastening connection is disclosed. The sleeve includes a first end for welding to the pipe, and a hook-forming second end for co-operating with the coupling in such a manner that the hook is suitable for providing fastening between the coupling and the pipe in the event of the fastening connection being damaged.

Abstract: A compound tube is disclosed that includes an outer tube and an inner tube disposed in the outer tube. A passage is defined between the outer tube and the inner tube. Various methods of joining the outer tube to the inner tube are disclosed.

Abstract: A brazed tube assembly and a joining method thereof using brazing, are disclosed. The tube assembly using brazing includes a pre brazed joint assembly method to form a fully pre assembled and locked component prior to brazing.

Abstract: A tubular element for securing to a tube end by friction-welding for the purpose of transporting a fluid, the element includes a body (1) having a housing (5) formed therein to receive the tube end, the housing having an inlet segment (6) for the tube end and a welding segment (9) with an inlet defined by a surface (13.2) for initiating welding. The housing further includes, between the inlet segment and the welding segment, at least one reception groove (8) for receiving a portion of the tube end that is pushed back during welding, the reception groove having a flank with at least a portion forming the weld-initiating surface and on its other side an abutment flank for the pushed-back portion. A method of friction welding is also disclosed.

Abstract: A method for welding a pipe section and a connector, where each of the pipe and connector have inner and outer beveled surfaces forming only a single angular alignment land when mated. The pipe and connector are welded together with only a single interior welding pass and with more than one exterior welding pass to fill the weld joints at the outer beveled surface, so as to weld the connector to the pipe.

Abstract: The invention relates to a method of protecting equipment intended to operate at high temperature in the presence of a fluid containing at least one hydrocarbon and/or carbon monoxide against corrosion by metal dusting, method in which pieces of the equipment are made from an alloy containing nickel, iron, chromium and/or aluminum, and in which said pieces of the equipment are protected from said corrosion by a protective coating. This method is characterized in that said equipment pieces protected in this way are connected to each other by means of joining pieces, said joining pieces being protected beforehand by a protective coating over at least part of their surface intended to be brought into contact with said fluid at high temperature, and in that each of the connections intended to be subjected to said corrosion is produced by external welding of the ends of the joining piece with said pieces of equipment.

Abstract: The present invention is directed to a pipe section and a connector that are adapted to be welded together, wherein each of the pipe and connector have inner and outer beveled surfaces and the joint is comprised of an angular alignment land. In one embodiment, an outer beveled surface on the pipe and an inner beveled surface on the connector cooperate to define the angular alignment land. In yet another illustrative embodiment, the inner beveled surface of the connector and the outer beveled surface of the pipe have a bevel angle of approximately 30 degrees, while the outer beveled surface of the connector and the inner beveled surface of the pipe have a beveled angle of approximately 45 degrees.

Abstract: The present invention is directed to a pipe section (220) and a connector (400) that are adapted to be welded together, wherein each of the pipe and connector have inner and outer beveled surfaces and the joint is comprised of an angular alignment land (60). In one embodiment, an outer beveled surface on the pipe and an inner beveled surface on the connector cooperate to define the angular alignment land (60). In yet another illustrative embodiment, the inner beveled surface of the connector and the outer beveled surface of the pipe have a bevel angle of approximately 30 degrees, while the outer beveled surface of the connector and the inner beveled surface of the pipe have a beveled angle of approximately 45 degrees.

Abstract: A hollow plastic product including a hollow main body, a reinforce member and a connector pipe is provided. Such a hollow plastic product is, for example, used advantageously as a component of an air-intake system or fuel supply system of an automobile. In one example, the hollow main body is a duct, hose or tube extending over a length, and the reinforce member is ring-shaped so that it extends around a circumference of an outer surface of the hollow main body. The reinforce member is manufactured by injection molding and is used as an insert when blow-molding the hollow main body, so that the reinforce member is integrally formed with the main body. The reinforce member has a defined welding surface formed with a first hole, to which one end surface of a connector pipe is thermally welded. Then the hollow main body is formed with a second hole in alignment with the first hole, thereby defining a fluidic communication between the hollow main body and the connector pipe.

Abstract: A plastic coupling for joining two metal pipe sections end-to-end to form a pipe assembly. A first plastic spigot cuff is formed along the periphery of the end of the first pipe and a mating second plastic bell cuff is formed along the periphery of the end of the second pipe, such that the first and second cuffs form a bell and spigot joint with the first, spigot cuff inserted into and joined to the second, bell cuff.

Abstract: In a joint structure for coupling a first component (21) to a second component (22) in a joint portion of a fluid flow passage, the second component (22) has a portion thereof inserted into the first component (21) to engage with the first component (21). The second component (22) is provided with a flange portion (26), which is disposed adjacent to a bottom surface of the first component (21) and welded or bonded to the bottom surface, so that these components (22, 21) are coupled with each other in an easy and a fluid-tight manner in a condition in which they are prevented from rotating relative to each other without using any locking pin. There is no fear that the components (22, 21) dissolve in a fluid or gaseous material passing through the fluid flow passage. The joint structure is easy in maintenance.

Abstract: A first tube has an end portion with a socket that is tapered by, a frustoconical wall that ends with a radially extending land. A copper brazing ring is disposed on the land. An end portion of a second tube having a knurled surface is press fitted into the socket to provide a coupling assembly. Upon heating the coupling assembly, the copper brazing ring melts and flows through the grooves in the knurled surface to weld the second tube to first tube and to seal the interface therebetween.