Lined pipe and joints thereof

A method of making a lined pipe assembly, the method comprising:

• welding an annular distal end of a tubular coupler to an annular proximal end of a metallic pipe, wherein the coupler comprises an annular coupler proximal end for receiving a weld, and a coupler inner wall comprising a distal portion and a proximal portion, and defining a coupler internal profile;
• press fitting a distal end of a tubular metallic sleeve into the coupler internal profile, wherein an outer wall of the sleeve and the proximal portion of the coupler inner wall define an annular space therebetween;
• and
• after the welding and the press fitting steps, lining an inner wall of the pipe, the distal portion of the coupler inner wall, and an inner wall of the sleeve with a non-metallic liner.

A kit for making an end-to-end joint of first and second pipes, the kit comprising:

• a tubular metallic first coupler comprising a first coupler distal end attached to or for attachment to the first pipe, an annular first coupler proximal end for receiving a weld, and an annular first coupler internal bearing surface;
• a tubular metallic second coupler comprising a second coupler distal end attached to or for attachment to the second pipe, an annular second coupler proximal end for receiving the weld, and an annular second coupler internal bearing surface;
• and
• a tubular collar comprising an annular collar first end surface for abutting the first coupler internal bearing surface, and an annular collar second end surface abutting the second coupler bearing surface;
• wherein in use, when the collar is disposed inside the first and second couplers with the collar first end surface abutting the first coupler internal bearing surface, and the collar second end surface abutting the second coupler bearing surface, an inner wall of the collar and outer walls of the pipes define an annular space therebetween, and the first coupler proximal end and the second coupler proximal end are aligned for welding together at a location that axially overlaps the collar.