The invention is an apparatus and method for Orbital welding of pipes or pipe segments together to form a pipeline, i.e., Orbital welding. A scanner welding unit, a control unit and a welding unit are combined to travel along and above a seam, which is formed between two interfacing base/cylindrical surfaces of every two pipe or pipe segments, scan the pipes/pipe segments relative positioning, alignment and levelling, and their surface geometry and topography and overlay a welding material starting from the root layer at the bottom of the seam and up to its edge and sealing it with a capping layer. The welding unit lowers a welding tip into the seam that may rotate on its axis at different angels relative to the surface during welding. The scanner unit may alert on mismatches on the relative position of the pipes/pipe segments before or after welding and in some cases enable repositioning for a more hermetically sealed weld.

Provided is an apparatus for coating a girth weld and a cutback region surrounding said girth weld, said apparatus having lateral travel at least equal to the length of the cutback region and circumferential rotational travel around the pipe. The apparatus can provide a multiple component coating accurately and safely, without the need for solvent flushing of the apparatus.

An orbital welding device (1) for welding two pieces of pipe, the orbital welding device (1) having a welding current source (10) in a welding current source housing (11) and an orbital welding head (20), which is separate from the welding current source housing (11) and is connected to the welding current source (10) by a cable (2), the orbital welding head (20) having a chamber (50) for the use of shielding gas (50) and/or the orbital welding device (1) having a purging device (90) for the use of shielding gas, preferably back-up shielding gas or purge gas, the orbital welding device (1) having an oxygen sensor (40), wherein the oxygen sensor (40) is arranged in or on the welding current source housing (11).

An orbital welding device (1), having a welding current source (10) in a welding current source housing (11) and an orbital welding head (20), which is separate from the welding current source housing (11) and is connected to the welding current source (10) by a cable (2), the orbital welding head (20) having a pipe mount (21) and a welding electrode holder (22) for holding a welding electrode (23). An electric motor (31) is designed to drive the welding electrode holder (22) and thus turn it with respect to the pipe mount (21). The orbital welding head (20) has a chamber (50) for shielding gas. An optical oxygen sensor (40) is designed to measure an oxygen concentration in a measuring region (51) in the chamber (50). The oxygen sensor (40) is arranged outside the chamber (50) and is optically coupled to the measuring region (51) by an optical coupling.

A pipe machining carriage, including a carriage configured to travel along an outer circumference of a pipe, and a chain coupled to both ends of the carriage wraps around the outer surface of the pipe. The carriage and the chain precisely move along the outer surface of the pipe. The disclosure may provide a carriage that performs machining with high accuracy by preventing the carriage from deviating from the original mounted position by moving the chain along with movement of the carriage. The disclosure may also provide a carriage mounted stably on the outer circumferential surface of the pipe to machine the pipe, regardless of pipe diameter, by adjusting a distance between the carriage drive wheels. The disclosure may prevent the carriage from slipping by mounting a front wheel and a rear wheel to the same drive shaft so the front and rear wheels rotate simultaneously in response to motor operation.

An additive repair device for internal threads is provided. The device includes a moving assembly, a rotating assembly, a speed regulation assembly, a gear assembly, an additive assembly, and a connecting assembly. The moving assembly includes a drive part and a linear movement mechanism. The additive assembly is connected to the linear movement mechanism through the connecting assembly. One end, which is far away from the drive part, of the linear movement mechanism is connected to an input end of the speed regulation assembly through the gear assembly. The rotating assembly includes a clutch mechanism and a clamping mechanism. The clutch mechanism includes a clutch outer gear and a clutch inner gear. The clutch outer gear is arranged at an output end of the speed regulation assembly. The clamping mechanism is fixed to one end, which is far away from the speed regulation assembly, of the clutch inner gear.

The present invention relates to apparatuses and methods for laser treatment, more particularly laser roughening, of surfaces.

A tool for intervention on the wall of a fluid pipe, comprising a duct segment through which the fluid is intended to flow when the tool is in the pipe, and at least first and second modules for creating seals between the wall of the pipe and the duct segment, to isolate the fluid circulating in an outer part of a section of the pipe, between the first and second seal creation modules.

The tool includes motorized rollers for moving the tool in the pipe and a module for determining the location of the tool in the pipe.

A laser pipe cutting machine for cutting pipes or profiled sections using a laser beam generated by a laser unit, includes a machine bed on which a feed station is provided for feeding pipes or profiled sections to be processed along an x-axis, and a push-through chuck through which the pipe or profiled section is pushed to a cutting head. The cutting head is movably disposed along a y-axis running perpendicularly to the x-axis and along a z-axis running perpendicularly to the y-axis. The machine bed is equipped with an axis support on which the cutting head is movably mounted and the push-through chuck is disposed.

Provided is a weld assembly supported from an arm of a heavy equipment vehicle. The vehicle includes a pipe grabber for manipulating the position of a pipe. The weld assembly integrated with and supported from the manipulator. The weld assembly further includes a conforming ring, a sensor assembly and an orbital welder. The weld assembly is also of a clam shell construction for wrapping around two pipe ends to be welded.