A cone assembly for use in expanding the diameter of a pipe has a rigid cone adapted to be positioned adjacent to an end of the pipe, a flexible cone positioned adjacent an end of the rigid cone and being movable between an expanded diameter at a reduced diameter, and an actuator having an end in contact with the flexible cone. The actuator is movable between an extended position and a retracted position. The extended position is adapted to cause the rigid cone to expand the outer diameter of the pipe and causes the flexible cone to expand in diameter. The retracted position of the actuator removes the force applied to the flexible cone so as to cause the flexible cone to have the reduced diameter. The flexible cone is a ring having a continuous wall with a single slot therethrough.

A coupling structure includes a hollow rod section formed of a metal pipe and fastening sections formed by plastic deformation of the metal pipe so as to be connected with end sections of the hollow rod section. The fastening section includes a pair of base end sections which are each connected with a peripheral wall section forming a closed cross-section at the end section of the hollow rod section, and are separated from each other, and a bottom wall including a flat surface connected with the pair of the base end sections, and a pair of front end sections including a pair of side walls curving inwards from at least widthwise end sections of the bottom wall on a base end section side.

A method for manufacturing a tube includes continuously moving a tubular hollow blank through an expansion tool, and supplying fluid to a space delimited by the expansion tool and the tubular hollow blank the such that a hydraulic pressure is applied inside the tubular hollow blank. The magnitude of the hydraulic pressure is selected such that the tubular hollow blank is deformed plastically. The disclosure also relates to an arrangement for manufacturing a tube.

Provided is a die and a method for forming a flange at an axial end of a rigid metal tube. The die is configured to be engaged by a forming tool to deform the axial end of the rigid metal tube into the flange suitable for providing a leakproof link with an external sealing element. A flange recess in the die provides a shutoff-surface for defining a radially outermost perimeter of the flange formed in the flange recess, and a groove, disposed axially adjacent the flange recess, that is configured to provide for direction of overflow material of the rigid tube during flange formation. The groove aids in enabling an adequately sized planar sealing face of the flange while reducing or altogether preventing formation of flashing at the sealing face.

A coupling structure includes a hollow rod section formed of a metal pipe and fastening sections formed by plastic deformation of the metal pipe so as to be connected with end sections of the hollow rod section. The fastening section includes a pair of base end sections which are each connected with a peripheral wall section forming a closed cross-section at the end section of the hollow rod section, and are separated from each other, and a bottom wall including a flat surface connected with the pair of the base end sections, and a pair of front end sections including a pair of side walls curving inwards from at least widthwise end sections of the bottom wall on a base end section side.

Processes and systems for preparing sections of pipeline pipe for machine processing to form pin and box ends for assembly into pipelines using mechanical press-fit pipe joints. The prepared pipe sections are prepared to be fully measured and documented during both manufacturing and assembly. Installed pipelines include pipeline data monitoring systems coupled to a pipeline data management center for receiving, archiving, and analysis of the data records to aid in administration, operation and management, and troubleshooting of pipelines.

Processes and systems for preparing pipe for machine processing to form pin and box ends for assembly into pipelines or to assemble pipe sections in pipelines using mechanical press-fit pipe joints in which hydraulic pressure and linear displacement parameters, respectively P and L, are fully measured and documented during both manufacturing and assembly. Installed pipelines include pipeline data monitoring systems coupled to a pipeline data management center for receiving, archiving, and analysis of the data records to aid in administration, operation and management, and troubleshooting of pipelines.

A process for assembling a pipeline from pipe sections connected together using mechanical press-fit joints using mechanical press-fit pipe joints that are fully measured and documented during both manufacturing and assembly. Installed pipelines include pipeline data monitoring systems coupled to a pipeline data management center for receiving, archiving, and analysis of the data records to aid in administration operation and management, and troubleshooting of pipelines.

A swage mechanism operable to expand an inner diameter of tubing. The swage mechanism includes a housing defining a longitudinal axis, a plurality of jaws coupled to the housing and movable relative to the longitudinal axis for selectively gripping the tubing, and a ram including a cylindrical portion and a frusto-conical head portion. The frusto-conical head portion of the ram is insertable into the tubing to expand the inner diameter of the tubing.

A mechanical spreader along a spreading axis, characterized in that it comprises a support (1) and two spreading plates (2), each spreading plate (2) comprising at least one bevel (3), and in that it also comprises a central rod (4) able to slide in said support (1) between the two spreading plates (2), said central rod (4) comprising a plurality of bevels (5) having a profile complementary to the bevels (3) of said spreading plates (2), the bevels (5) of said central rod (4) being in contact with the bevels (3) of said spreading plates (2), said spreader also comprising return means able to exert a return force on the spreading plates (2), means for pushing the central rod (4) and means for immobilizing the spreading plates (2) in planes perpendicular to said spreading axis.