An insulating insert is positioned around a field joint of a pipeline to insulate the field joint. The insert includes a longitudinal series of annular or part-annular filler segments of insulating material, curved about a longitudinal axis, that are each joined to one or more adjacent segments of the series by at least one link. The links may be webs, rods or articulated links. The links are flexible relative to the segments to facilitate bending of the insert along its length by enabling relative angular displacement between adjacent segments of the series.

A pipe support structure comprised of a base having a curved upper surface that create pipe support blocks from a series of adjacent ridges with an intervening valleys. The adjacent ridges of the support blocks support a pipe on its peripheral underside surface. The supported pipe may be positioned to extend either transverse to or parallel to the ridges and adjacent valleys. The valleys are sloped to serve as fluid drainage channels to remove fluid that may collect on the support structure base. The ridges and valleys of the support blocks may be sized and spaced apart as desired to provide support to a pipe of a desired size or a range of sizes.

A pipe pulling technique where an adaptor is attached to the end of the pipe prior to the pipe being pulled underground, for example through a drilled hole. Attaching the adaptor to the pipe end prior to the pipe being pulled underground is faster and reduces danger to workers compared to the conventional process of attaching the adaptor to the end of the pipe after the pipe has been pulled underground.

A pipe pulling technique where an adaptor is attached to the end of the pipe prior to the pipe being pulled underground, for example through a drilled hole. Attaching the adaptor to the pipe end prior to the pipe being pulled underground is faster and reduces danger to workers compared to the conventional process of attaching the adaptor to the end of the pipe after the pipe has been pulled underground.

A seal has a seal body with an axis and axial-facing surfaces. The seal body is configured to be mounted to a tubular member, and seal between the tubular member and a second tubular member. A visual indicium can be located on only one of the axial-facing surfaces. Prior to assembly of the tubular member and the second tubular member, the visual indicium is configured to be visible to a user after being correctly mounted to the tubular member without the user physically contacting the seal body.

A method for ensuring the correct orientation of tubing in a gas turbine engine. The method including prefabricating a first alignment bend in a first tube, prefabricating a second alignment bend in a second tube, aligning the first alignment bend in the same plane as the second alignment bend to place the first tube and the second tube in the correct orientation during installation, and connecting the first tube and the second tube.

A pipe pulling technique where an adaptor is attached to the end of the pipe prior to the pipe being pulled underground, for example through a drilled hole. Attaching the adaptor to the pipe end prior to the pipe being pulled underground is faster and reduces danger to workers compared to the conventional process of attaching the adaptor to the end of the pipe after the pipe has been pulled underground.

A pipe pulling technique where an adaptor is attached to the end of the pipe prior to the pipe being pulled underground, for example through a drilled hole. Attaching the adaptor to the pipe end prior to the pipe being pulled underground is faster and reduces danger to workers compared to the conventional process of attaching the adaptor to the end of the pipe after the pipe has been pulled underground.

A pipe-laying machine for laying pipes in the construction of pipelines includes: a central body to which two track assemblies are mechanically connected, the central body being adapted to support a base on which at least a boom is installed to move/lift/position the pipe; lifting means for handling the boom having a main winch; and an operator control cab. The boom having a first end pivoted on the base and a second end, connected to a control cable of the lifting means to wind/unwind itself on the main winch in order to rotate said boom carrying the second end away from/towards the ground. Between the base and central body, a levelling mechanism is interposed to tilt the base with respect to the track assemblies, according to a longitudinal axis parallel to and/or according to a transverse axis orthogonal to the direction of advancement of the track assemblies.

A pipe-laying machine for laying pipes in the construction of pipelines includes: a central body to which two track assemblies are mechanically connected, the central body being adapted to support a base on which at least a boom is installed to move/lift/position the pipe; lifting means for handling the boom having a main winch; and an operator control cab. The boom having a first end pivoted on the base and a second end, connected to a control cable of the lifting means to wind/unwind itself on the main winch in order to rotate said boom carrying the second end away from/towards the ground. Between the base and central body, a levelling mechanism is interposed to tilt the base with respect to the track assemblies, according to a longitudinal axis parallel to and/or according to a transverse axis orthogonal to the direction of advancement of the track assemblies.