A fluid pipe for a heating and air conditioning unit, exhibiting a pipe coupling section produced at least predominantly from plastic in the area of a mouth of the pipe, wherein a bead that is constructed from plastic and runs around the circumference of the pipe in the pipe coupling section and protrudes outward and wherein a circumferential ring that also runs around the circumference of the pipe and is produced from metal or a metal alloy is attached to the bead.

A technique provides for combining a subsea housing, e.g. a subsea low-pressure wellhead housing, and a casing. The casing may be in the form of a large diameter conductor positioned in a seabed to facilitate deployment of desired types of tubulars and other components in a subsea well. The casing is inserted into the subsea housing along an interior surface of the subsea housing. The casing is joined to the subsea housing by radial expansion of the casing until the casing is forced into a suitable engagement with the subsea housing.

The invention relates to tubing assemblies and methods for forming a fluidic connection to make the same. The assemblies include an outer tube having disposed therein a first inner tube affixed to the outer tube, a second inner tube and a support tube disposed in the second inner tube. The second inner tube is abutted against the first inner tube. A radial crimp is made in the outer tube over the second inner tube a distance x from where the tubes abut; the distance x being such that the end of the second inner tube seals against the end of the first inner tube. Various embodiments provide assemblies suitable for use with high fluidic pressure (e.g., greater than an about 70 MPa, approximately about 10,000 psi) and formation of chromatographic column assemblies comprising a capillary tube predisposed within the first or second inner tube prior to formation of the seal.

A connection socket for a tubular connection that includes: a socket cup having a metal alloy composition and a sealing portion, the sealing portion comprises a primary and a secondary sealing recess; a primary seal positioned within the primary sealing recess, the primary seal comprising an elastomeric material having a service temperature, and a secondary seal positioned within the secondary sealing recess, the secondary seal comprising a metal composition. Further, the secondary seal has a melting temperature at or above the service temperature of the primary seal.

A crimping tool for crimping a metallic crimp ring. The crimping tool includes a first crimp die having a first curved contact surface and a second curved contact surface, the second curved contact surface spaced apart from the first curved contact surface, and a trench extending between the first curved contact surface and the second curved contact surface. The crimping tool also includes a second crimp die cooperatively engageable with the first crimp die having a first curved contact surface and a second curved contact surface, the second curved contact surface spaced apart from the first curved contact surface, and a trench extending between the first curved contact surface and the second curved contact surface. The trench of the first crimp die and the trench of the second crimp die forms an annular bead in a center portion of the metallic crimp ring.

A press-fitting connection structure for pipeline defines a first mounting groove for accommodating a retaining ring and a second mounting groove for accommodating a sealing ring, making the retaining ring and sealing ring be respectively mounted in different grooves and not easily to move. The first and second mounting grooves are spaced apart, so that the retaining ring will not come into contact with and scratch the sealing ring when the press-fitting connection structure for pipeline is subjected to the force of a press-fitting tool, thereby eliminating a closing ring originally used to protect the sealing ring, which makes assembly be more labor-saving and efficient. By means of setting a plurality of retaining teeth on the inner surface of the retaining ring, the retaining teeth can be more easily buried into the outer wall of the pipe through tip ends thereof, improving the tensile performance of the retaining ring.

A press-fitting connection structure for pipeline defines a first mounting groove for accommodating a retaining ring and a second mounting groove for accommodating a sealing ring, making the retaining ring and sealing ring be respectively mounted in different grooves and not easily to move. The first and second mounting grooves are spaced apart, so that the retaining ring will not come into contact with and scratch the sealing ring when the press-fitting connection structure for pipeline is subjected to the force of a press-fitting tool, thereby eliminating a closing ring originally used to protect the sealing ring, which makes assembly be more labor-saving and efficient. By means of setting a plurality of retaining teeth on the inner surface of the retaining ring, the retaining teeth can be more easily buried into the outer wall of the pipe through tip ends thereof, improving the tensile performance of the retaining ring.

A ball mount assembly comprising a ball mount including a body having an opening and a base, the ball mount having an internal passage extending through the opening of the body in an axial direction of the ball mount; a compression fitting secured to the ball mount; and a sealing insert disposed in the internal passage of the ball mount, wherein the sealing insert is interposed between the compression fitting and the ball mount in the internal passage, and wherein the internal passage of the ball mount is defined by a first sidewall and a second sidewall.

The application relates to a pipe connection having a pipe end arranged in a connection piece. The pipe connection has an outwardly projecting at least sectionally circumferential bead configured on a pipe end. The connection piece has a radially deformable first connection piece portion creating a first radially deformable connection piece portion. The pipe end is held and secured in the connection piece using the first radially deformable connection piece portion. The application further relates to a heat exchanger with a pipe connection of this kind and a connection method for producing a pipe connection.

A pipeline system is enclosed including unlined or plastic lined pipes. A mechanical metal to metal connection is employed that can provide a fluid tight seal. A pipe coupling may be employed to span the connection. Plastic lined pipes can have their plastic liners connected to form a fluid tight bladder. Electro fusion may be employed.