Abstract: A drill pipe with cold upset ends. The drill pipe includes an elongate tubular portion with a pin joint on one end and a box joint on the other end. Each of the ends of the tubular portion is expanded using a cold upsetting process to provide a transitional portion and a joint receiving portion. The ends of the tubular portion have an inner and outer diameter which is greater than the inner and outer diameter of the tubular portion. The wall thickness of the tubular portion is substantially the same throughout its entire length, including the transitional portions and the joint receiving portions. A drill pipe made in accordance with this invention is durable and less costly to manufacture. A cold upsetting method by which the drill pipe is made utilizes no external heat. An internal mandrel is first inserted hydraulically into the ends of a tubular steel shaft to enlarge the ends.

Abstract: The invention relates to a connecting element for welding onto a circular front face of a pipe, said element having an annular region, (friction region), that can be friction welded to said front face. The connecting element can be welded onto the end of a pipe with a substantially circular front face in a particularly simple, rapid and cost-effective manner. Said element, together with additional components, e.g. a coupling nut and a threaded sleeve enables a tight connection of the pipe to other components, even under extreme pressure and temperature fluctuations.

Abstract: A first half part includes a second raised portion and a third raised portion respectively on the inner side of the hollow body and on the outer side of the hollow body with respect to a first raised portion, the second raised portion and the third raised portion being separated from the first raised portion with a spacing and being lower than the first raised portion. A second half part includes a third raised portion on the outer side of the hollow body with respect to a first raised portion, the third raised portion being separated from the first raised portion with a spacing and being lower than the first raised portion. An internal member includes a second raised portion on the inner side of the hollow body with respect to a first raised portion, the second raised portion being separated from the first raised portion with a spacing and being lower than the first raised portion. As a result, there is provided a high quality hollow body that can be provided at low cost and is cosmetically appealing.

Abstract: A method for connecting a plastic pipe to another plastic part, wherein an outer layer of the plastic pipe and an outer layer of the other plastic part are largely opaque to laser light, in which both the plastic pipe and the other plastic part are sheathed at the ends by an adaptor made of a plastic transmissive to laser light, and the adaptor is fastened by means of laser welding. In other embodiments, an adaptor of a material transmissive to laser light is molded together with another plastic part by a two-component injection-molding process, or the adaptor is molded and then overmolded to the other plastic part. This is followed by insertion of the pipe into the adaptor and fastening of the pipe to the adaptor by laser welding. The invention also relates to the composite parts produced according to this method.

Abstract: A high-pressure fuel accumulator for a common-rail fuel injection system of an internal combustion engine has a tubular main body (1) to which is welded at least one bushing (13) for connecting a high-pressure line (6). To improve the quality and safety of the high-pressure connections, a collar (14) is formed on the end of the bushing (13) facing the main body (1).

Abstract: A welded joint for metal pipes provided with an inner lining, which is resistant to damages caused by the fluids flowing through them. The pipes are machined in the inside at the areas next to the ends to be joined, forming an undercut at each end. An spacer ring is inserted in the hollow annular space formed by both undercuts. The outer diameter of this spacer ring is substantially equal to the diameter of the corresponding undercuts, and its axial length is substantially equal or less than the sum of the axial lengths of the undercuts of the pipes to be joined. The spacer ring is made of an outer annular layer of a high thermal conductivity metal and at least one inner annular layer of heat-insulating and heat resistant material. The outer annular layer abuts in heat conducting contact with the metal pipes within said undercuts, and the metal pipes are joined by a weld seam.

Abstract: Disclosed is a connection stub and a housing, in particular a high-pressure fuel reservoir, for a fuel injection system for internal combustion engines with a welded connection stub, in which sealing faces between the housing and the connection stub are provided, spatially separately from the weld seam.

Abstract: A tank joint part has a welding member welded to the outer surface of a fuel tank and a main body formed of a material of low fuel permeability and welded or otherwise joined to the welding member. The welding member is formed of modified polyethylene, which is easily weldable or otherwise joinable to the outer surface of the fuel tank and the main body, and in which very fine particles of a layered mineral are easily dispersible. The mineral is dispersed in layers oriented substantially at right angles to the direction of any possible permeation from the tank joint part. The tank joint part ensures a low fuel permeability and a high bonding strength.

Abstract: A MicroMount™ System for providing reliable, self-aligning connections to external fluid-handling or fluid-sensing components is disclosed. One embodiment comprises a generally miniaturized rectilinear body (102) that includes a plurality of exterior side walls (103). The upper wall (104) has a port (108) which is configured to connect to an external component. The end of the same port (108) which extends to the lower wall (105) is connected to an external passageway (107). The rectilinear body (102) does not require holes or fasteners that fit into holes, since it employs a number of posts (110) that project from the body (102) to secure the body (102) to an external component.

Abstract: A connecting portion (10c) of a container (10) of a catalyst converter is formed with a joining portion (15) to be joined to a joining portion (16) of a flange member (11) by spinning working, and the joining portion (15) formed by the spinning working is joined to the joining portion (16) of the flange member (11) by friction welding.

Abstract: A method and a device for connecting parts of an exhaust gas system which comprises at least one metal tube formed from a bellows and optionally further parts disposed coaxially within and/or outside of the bellows and at least one further system part to be connected to the metal tube, are characterized in that one end of a short connecting tube is inserted positively in an end of the metal tube and the other end is inserted positively in the system part to be connected to the metal tube, and the system part is moved to the end of the metal tube facing the system part, thereby leaving a gap, and the system part, the connecting tube and the metal tube being connected from the outside in one working step.

Abstract: The present invention provides a positive gapping device for socket welded fittings. The positive gapping device comprises a socket fitting having a recessed area on at least one end for receiving a pipe section that is engageable with the recessed area of the socket fitting. It further includes a gapping means disposed on one of a surface of the recessed area of the socket fitting facing an end of such pipe section and an end of such pipe section for engagement with such socket fitting. The gapping means providing a space between the socket fitting and such pipe section for reducing residual stresses that result from a welding operation.

Abstract: A connection arrangement is provided for a mineral-insulated conduit with two ends to at least one tube-shaped structure, wherein at least one end is arranged partially overlapping with a tube-shaped structure and is affixed by welding or soldering, and wherein a sheath surface is arranged in the region of the overlap. The problem results of making available a connection arrangement for a mineral-insulated conduit to a tube-shaped structure, which is simple to produce and mechanically stable. The problem is solved in that the sheath surface has a structured surface, the end of the mineral-insulated conduit and the tube-shaped structure contact each other on all sides in the region of the overlap, and the contact surface is smaller than the sheath surface beyond the contact surface.

Abstract: A fluid control apparatus and its manufacturing method can meet various demands or needs on specification of a customer. This saves a maker of the apparatus a large stock of various types of the apparatus and the use of an expensive mold. Consequently, the apparatus and its manufacturing method are advantageous from an economical point of view. The apparatus is provided with a pair of plastic coupling openings (2) and (3) in its inlet and its outlet portion, respectively. The coupling openings (2) and (3) form a pair of opposite end projections of the apparatus, and are capable of being welded to plastic tube members (4) and (5) of a customer's designed fluid circuit, respectively, through a butt welding process when the apparatus is delivered to the customer. The tube members (4) and (5) are designed according to the customer's design specification.

Abstract: A tubular resin connection structure is disclosed that includes a resin connector and a resin tube. The resin tube is fixedly coupled to one of the first and second ends of the resin connector in a fluid-tight manner by a weld disposed between the resin connector and the resin tube. Preferably, one end of the resin tube is inserted into a molding die and a portion of the resin connector is welded to the resin tube by overmolding the resin of the resin connector during injection molding. In other words, the weld between the resin connector and the resin tube is formed overmolding a resin of the resin connector over the resin tube to simultaneously the mold the resin connector and form the weld between the resin connector and the resin tube.

Abstract: A metallic connection piece for an all-metal heat exchanger is capable of being used for a plastic hose coupling. The connection piece (20) has a double bead as a stop region with two integrally formed anti-twist retaining means (26, 27) that engage into axial grooves (40, 41) of a hose coupling (31) and ensure fault-free mounting.

Abstract: Girth welds with crack arresting capability, and welding methods for producing same in high strength pipelines, are provided. Girth welds according to this invention are produced in high strength pipelines by welding methods that produce (i) HAZ microstructures that are softer than the pipeline steels, (ii) weld toes that act as stress/strain concentrators, thus promoting tearing in the HAZ and a ring-off fracture; and (iii) a weld geometry that promotes an inclined fracture path.

Abstract: A process for joining high strength metal components by electromagnetic forming techniques. One of the metal components carries high loads or is subjected to combined stresses and strains, thus requiring that it be relatively strong and ductile. EMF or MPW processes are used to join the components, the strength of which is temporarily diminished prior to the joining step. The high strength material is subjected to a retrogressive heating and quenching process along a joined boundary thereof; then electromagnetically joined; and thereafter, the strength of the diminished material is restored to its higher temper and strength.

Abstract: A tube jointing structure comprises a first tube, a second tube at an angle with the first tube, and a reinforcing plate for connecting the first tube with the second tube. A portion of the reinforcing plate is bonded to the first tube and the remaining portion of the reinforcing plate is soldered to the first tube and the second tube.

Abstract: Disclosed is a PVC pipe cement composition that comprises a polymeric material of a methyl methacrylate homopolymer or copolymer, a styrene-acrylonitrile polymer, and a rubber grafted with at least a methacrylic acid ester of a C1 to C8 alkanol; and at least about 10% by weight solvent.

Abstract: A concrete flow line made up of a plurality of end to end pipe sections with pipes connected to each other by a coupling assembly provides for carrying abrasive fluid concrete to a deposit site. The coupling assembly includes an insulating thin sleeve slid over the connecting end of the pipe and spaced from the pipe to form a heat insulating air space therebetween. The thin sleeve is welded to the pipe prior to the hardening of the pipe. After the sleeve is welded in place the inner wall of the pipe is hardened using an induction coil for concentrating of the heat within the inner wall portion in combination with a quenching unit to affect the desired hardening while maintaining an outer ductile wall portion to which the sleeve has been actually welded. A clamping collar or coupler is welded to the sleeve after hardening and forms a connecting end for receiving of a clamp unit which interconnects the adjacent pipe and pipe sections.

Abstract: The invention relates to a quick cone (1) for pipe assemblies for conducting fiber suspensions wherein the quick cone provides a transition from a pipe (8) with a greater diameter to a pipe (9) with a smaller diameter as seen in the flow direction of the fiber suspension. The invention is characterized therein that the quick cone (1) has a pipe (2) wherein the pipe (2) has a major portion of its axial extension concentrically enclosed by a jacket (3) that includes a conical jacket portion (4) that is shaped as a cut cone and a cylindrical connection segment (5) where a thicker end of the conical jacket portion (4) is in engagement with the cylindrical connection segment (5) that has substantially the same diameter as the larger diameter pipe (8) and the pipe (2) has substantially the same diameter as the smaller diameter pipe (9) and wherein the more pointed end of the jacket portion (4) is tightly attached to the pipe (2).

Abstract: A protected welded joint for fluid transport pipes which will be implemented at the ends of each pipe segment to be welded together, the pipes being of the type having a protective layer inside, and where the welded joint area has inside it an annular sleeve. The joint is composed of this sleeve which is laminar and tubular, and made of stainless steel, and has both ends curved outward, forming an arched rim whose maximum diameter when adjusted corresponds to the internal diameter of each pipe segment. At the curved ends of each sleeve there are individual annular containment seals. The opposite ends of each segment prepared to be welded are separated from one another, leaving a certain space, and each of them has, at a short distance from the respective end, individual radial drill holes. These holes pass through the wall of the corresponding tubular element at each of its ends, and are plugged with threaded stoppers.

Abstract: A technique for joining an elongated wound element and a mating connector of a body implantable lead assembly comprises the steps of causing an end portion of the wound element to abut against a first end of a transition component having similar mass and heat transmission characteristics. The wound element is a coil of wire and the transition component is a ring member, both of which have similar inner and outer diameters. Further, the wire has a nominal diameter and the ring member has a similar transverse dimension. A laser beam is targeted generally at the location at which the end portion of the wound element abuts against the first end of the transition component such that the energy delivered thereto is substantially balanced between the wound element and the transition element, thereby thermally fusing the wound element and the transition component. The wound element and the transition component may be fabricated of the same alloy or of dissimilar alloys.

Abstract: An exhaust manifold flange for an internal combustion engine, for sealably connecting at least one stub pipe of an exhaust manifold to a wall of the engine, the flange has a basic part made of sheet steel provided with a bead which extends substantially around the entire outer contour of the basic part, at least one receiving hole with another bead therearound for securely receiving the at least one stub pipe in the manifold which has holes which are arranged for attaching the exhaust manifold flange to the wall of the internal combustion engine.

Abstract: A reinforced tube joint formed by a first tube having an end portion; a stress collar fitted, with an interference fit, about the first tube so that the end portion of the first tube extends beyond the stress collar; and a second tube having an end rigidly connected to both the stress collar and the end portion of the first tube.

Abstract: A connection arrangement is provided for a mineral-insulated conduit with two ends to at least one tube-shaped structure, wherein at least one end is arranged partially overlapping with a tube-shaped structure and is affixed by welding or soldering, and wherein a sheath surface is arranged in the region of the overlap. The problem results of making available a connection arrangement for a mineral-insulated conduit to a tube-shaped structure, which is simple to produce and mechanically stable. The problem is solved in that the sheath surface has a structured surface, the end of the mineral-insulated conduit and the tube-shaped structure contact each other on all sides in the region of the overlap, and the contact surface is smaller than the sheath surface beyond the contact surface.

Abstract: A clad material of a clad steel pipe is disposed on at least one of an internal surface and external surface of a base material, the clad material having two lateral edges which are welded together to form the pipe. A thickness of the clad material at the two ends of the clad material in a lengthwise direction is predetermined at a first value, the first value which enables absorption of a discrepancy in thickness when connecting the clad steel pipe to another clad steel pipe; and wherein a thickness of the clad material at other parts other than the two ends is determined to be at a second value which is smaller than the first value.

Abstract: The invention is directed to a double-wall steel pipe joint. Each section of double-wall steel pipe has a steel outer casing and a steel inner carrier pipe. The completed joint comprises a steel joint ring fitted within the annular space at the end of each double-wall steel pipe section. The combination of locking serration and epoxy bonding join and seal the inner steel pipe to the bore of the joint ring, without welding. Welding joins the ends of the sections of outer casing.

Abstract: A joint between a fluid connector body and a plastic tube is formed at least in part by spin welding, wherein the portion of the connector which is configured to receive the tube defines inner and outer surfaces which engage the inner and outer surfaces of the mating tube to create redundant circumferentially continuous seals between the fluid passageway and the outside environment. The use of multi-layer co-extruded plastic tubing having intermediate or bonding layers is particularly advantageous inasmuch as separate inner and outer seals are established between the connector housing and the inner and outer tubing layers, respectively, to ensure that neither system fluids nor foreign contaminants are exposed to the intermediate tube layers, thereby preventing capillary adsorption or delamination.