An apparatus and method for reinforcing a welded-lap pipe joint includes a first pipe segment having a bell-end presenting a receptacle, a spigot-end of a second pipe segment extending into and welded to the bell-end receptacle to form a welded-lap joint, and a bell-shaped reinforcing sleeve surrounding the welded-lap joint. In exemplary embodiments the reinforcing sleeve is welded to the first or second pipe segments. Also disclosed are a method of assembling a reinforced welded-lap pipe joint.

A system for coupling reinforced thermosetting resin pipes includes a first pipe having a tapered, spigot end, wherein a portion of an external surface of the tapered, spigot end of the first pipe is bonded to a first thermoplastic material and a second pipe having a tapered, socket end adapted to internally receive the tapered, spigot end of the first pipe, wherein a portion of an internal surface of the tapered, socket end of the second pipe is bonded to a second thermoplastic material. A method of coupling the first pipe and the second pipe includes inserting the first pipe into the second pipe; coupling the first pipe to the second pipe via a mechanical joint; and employing a thermal joining process to bond the first thermoplastic material to the second thermoplastic material by heating the first and second thermoplastic materials to melt the first and second thermoplastic materials.

A lighting pole is disclosed, which includes a hollow tube, and at least two nonintersecting walls extending over an axial length of the hollow tube to divide an interior of the hollow tube into at least three isolated chambers. At least one of the three isolated chambers defines a gap separating at least two of the isolated chambers.

A system for producing chemicals, such as, ethylene or gasoline, at high temperature (above 1100 degrees C.) having a feedstock source. The system includes a chemical conversion portion connected with the feedstock source to receive feedstock and convert the feedstock to ethylene or gasoline. The conversion portion includes a coil array and a furnace that heats the feedstock to temperatures in excess of 1100 C. or 1200 C. or even 1250 C. or even 1300 C. or even 1400 C. A method for producing chemicals, such as ethylene or gasoline, at high temperature.

An apparatus and method for reinforcing a welded-lap pipe joint includes a first pipe segment having a bell-end presenting a receptacle, a spigot-end of a second pipe segment extending into and welded to the bell-end receptacle to form a welded-lap joint, and a bell-shaped reinforcing sleeve surrounding the welded-lap joint. In exemplary embodiments the reinforcing sleeve is welded to the first or second pipe segments. Also disclosed are a method of assembling a reinforced welded-lap pipe joint.

A refrigerant pipe that constitutes a refrigerant circuit of a refrigeration apparatus includes: a first pipe; and a second pipe. The first pipe includes a pipe body made of stainless steel; and a connection pipe, made of a material different from stainless steel, disposed at an end of the pipe body in a pipe axial direction. The connection pipe includes a protrusion protruding in the pipe axial direction from the end of the pipe body. The second pipe includes: a second-pipe large diameter portion, made of a material that is a same as the material of the connection pipe, disposed at an end in the pipe axial direction; a second-pipe small diameter portion having a smaller diameter than the second-pipe large diameter portion; and a step portion disposed between the second-pipe large diameter portion and the second-pipe small diameter portion.

A connection system for reinforced thermoplastic polymer (RTP) pipe is disclosed. The connection system includes a first pipe having a first end and a reinforced thermoset resin (RTR) coupler positioned adjacent the first end of the first pipe. The RTR coupler has an annular body with a first socket extension extending into the first end of the first pipe and a first thermoplastic tie layer provided between the first socket extension and the first end of the first pipe. A first set of wedges is positioned circumferentially around an outer surface of the first end of the first pipe, and a first flange fitted around the first set of wedges, wherein the first set of wedges is wedged between the first end and the first flange.

A lighting pole is disclosed, which includes a hollow tube, and at least two nonintersecting walls extending over an axial length of the hollow tube to divide an interior of the hollow tube into at least three isolated chambers. At least one of the three isolated chambers defines a gap separating at least two of the isolated chambers.

A system for producing chemicals, such as, ethylene or gasoline, at high temperature (above 1100 degrees C.) having a feedstock source. The system includes a chemical conversion portion connected with the feedstock source to receive feedstock and convert the feedstock to ethylene or gasoline. The conversion portion includes a coil array and a furnace that heats the feedstock to temperatures in excess of 1100 C. or 1200 C. or even 1250 C. or even 1300 C. or even 1400 C. A method for producing chemicals, such as ethylene or gasoline, at high temperature.

Systems for tube-to-tube connections are described herein. A device having an aperture for receiving a tube may comprise: an inlet portion comprising a first diameter, the inlet portion located at an inlet of the aperture; a braze filler collector portion located axially adjacent to the inlet portion comprising a second diameter, the second diameter being greater than the first diameter; a necked portion located axially adjacent to the braze filler collector portion comprising a third diameter, the third diameter being less than the first diameter and the second diameter; a flow surface comprising a fourth diameter, the fourth diameter being less than the third diameter, the flow surface defining a void; and a collection pocket located axially adjacent to the necked portion, the collection pocket configured to collect a braze filler material from the necked portion to prevent the braze filler material from contacting the flow surface.