Offshore & process industry welding automation

Pressure vessel manufacturing. Pipe manufacturing. Valve manufacturing. Offshore platform manufacturing.


Reliable and modern equipment and solutions

Maintaining a competitive edge in the offshore and process industry requires high-quality, automated welding and production solutions.

PEMA solutions handle safely and efficiently heavy steel structures and unconventional alloys. Our solutions are used globally by offshore and other demanding process industries

Pressure Vessel Manufacturing

Pressure vessel manufacturing

Specially designed solutions for pressure vessel manufacturing ensure efficiency and quality. Effective vessel production requires rigid roller beds, milling solutions and welding column & booms or welding platforms combined with modern software solutions.

Efficient material transportation without unnecessary crane activities is ensured with transfer cars. Pemamek has everything you need for modern pressure vessel manufacturing from single welding stations to complete production lines.

Pressure vessel manufacturing

Solutions for thick & thin materials

PEMA is specialized in handling and welding of thick and heavy workpieces. Modern way to approach thick materials is using semi-narrow gap grooves and long-stick-out SAW process for welding. This method is highly suitable for cold cutted semi-narrow grooves typically 50-150 mm and more.

A narrow, preformed tulip-shape welding groove reduces the seam volume and decreases the amount of fillet material needed. On the other hand, producing a quality seam is a process that places extraordinary demands on a production facility.For automated adaptive welding of thick materials with long-stick-out process you need the most advanced software to keep the process under control. Our solution for your needs is PEMA WeldControl 500 software with adaptive functions.

PEMA’s 100- 1200-ton rollerbeds are designed to meet the needs of precise semi-narrow gap welding. In semi-narrow gap welding, the vessel must be rotated with extreme precision, with no axial movement, even over the longest period of time. For this reason, PEMA’s large rollerbeds come with an automatic hydraulic anti-creep function to prevent axial movement. 

PEMA has everything you need to start- or improve manufacturing process of heavy pressure vesselsBesides of welding solutions we have also heavy duty longitudinal and circumferential milling machines for groove preparation. 

Solutions for thin plates
We have also proved manufacturing solutions for thin and shiny materials highly suitable for food, brevery and chemical industry customers. Typical plate thicknesses vary from 2 to 25 mm and materials from stainless steels to duplexes.

The welding process is always selected case by case together with the customer, with focus on the actual need and costs.

Options for welding of thin plates: MIG/MAG, TIG, plasma and laser solutions.

Pressure vessel manufacturing

Robotic nozzle welding

PEMA Nozzle welding solution is versatile and not limited only to  nozzle connection welding.  You will also have the option to weld circular and longitudinal seams, support legs, and other external components.

Robotic nozzle welding
PEMA Nozzle welding station for pressure vessels automates the nozzle welding process. The station is an optimal solution for heavy duty workpieces.

Thanks to its hi-tech features, the system allows automatic creation of robotic welding programs, based on laser scanned groove geometry.

PEMA Nozzle welding station is an optimal solution for heavy duty workpieces. The solution allows automatic creation of robotic welding programs, based on laser scanned groove geometry. PEMA Nozzle welding station has a quick ramp-up period.

Automated multi-layer welding results in visibly improved welding quality and reduced defect rate.

Rethink manufacturing.

The time to start with welding and production automation is now.

Pressure vessel manufacturing

Dish end production: integrated welding & cladding

Integrated welding and cladding processes are combined to our Column & Boom and together with the interpolated movement these processes are available for both internal and external surfaces.

The extremely demanding quality requirements of manufactured pressure vessels are achieved by using high-quality production equipment to ensure a stable and fully controlled welding process.

PEMA has extensive knowledge in building high-precision, large-scale machinery with up to 250 tons of positioners and numerically controlled column & booms and welding platforms, and fully integrating modern digitally controlled Submerged Arc Welding equipment. These integrated solutions create a combination that ensures an increase in productivity, solid quality and uncompromised safety.

Integrating a Multi-Arc SAW carriage and positioner in an advanced control system, i.e. the interpolation of the welding head and positioning the dish end, allows the welding of semi-elliptical dish ends and hemispherical heads to be automated. Real time control of the welding orientation and welding speed is something unique we have developed as a solution for our customers in the industry.

Pressure vessel manufacturing

Shell fabrication & assembly

Special functions have been designed to make the workflow even more easily. PEMA Assembly and welding station can decrease fit-up and tacking time dramatically: it is based on the self-aligning rollers, fixed jig unit, and a “growing line” function. 

Solutions from Pemamek include: milling of longitudinal seams, longitudinal seam welding station and PEMA Assembly station.

Special functions to increase efficiency:

  • Multi-arc SAW welding with automated functions
  • Conical shell tilting
  • Fully auto-adjustable special PU rollers
  • Fast rotation from internal to external welding in long seam welding
  • Integrated grounding
  • Wireless control
  • Extremely fast fit-up with assembly line developed specifically for pressure vessel and wind tower assembly

Pressure vessel manufacturing


Milling is crucial for heavy welding. It increases production efficiency, saves welding time and significantly improves the welding quality.

Pipe manufacturing

Heavy pipe fabrication

Your pipe production gets a boost in productivity when PEMA’s rollerbeds, welding C&B, welding automation systems, and engineering solutions are utilized.

Longitudinal pipe sections can be welded outside by our Multi-Arc SAW portals and inside by our long reach welding booms.

Longitudinal and circumferential welding
We have dedicated welding automation solutions for longitudinal welding of tubular pipes, pipe-to-pipe, elbow-to-pipe and flange to pipe connections. Our positioners and welding column & boom solutions combined with special welding automation can be selected from our wide range of standard modular product families.

Various welding processes such as GMAW or GTAW for root pass welding and Multi-Arc SAW welding for filling up are integrated in our pipe fabrication equipment.

Efficient welding head and motorized slide modules have been developed to fulfill the technological needs that are required to automate the welding of different size geometries and designs.

You can choose from a wide range of PEMA positioners and the appropriate model and machine can be equipped with custom-made clamping devices.

Valve manufacturing:

Valve manufacturing

Heavy-duty welding that valve manufacturing requires can be efficiently made with PEMA solutions. Internal and external welding of circumferential joints can be done automatically so that repeatable high-quality is guaranteed.

Robotic valve welding: for the higher level of automation robots can be used for welding.

With heavy-duty adaptive welding it is possible to compensate the variations in the welding groove. Weld pass sequence is always executed according to actual real-life welding groove as the groove is laser scanned before welding

Offshore platform manufacturing

Automated solutions for offshore platform manufacturing

PEMA automated solutions for offshore platform manufacturing include:

  • Plate joining
  • Beam assembly and tack welding
  • Robotic welding for beams and stiffeners
  • Material handling solutions

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We are committed to providing the best solution with superior quality

PEMA solutions provide the highest safety and welding efficiency at work, with 50 years of experience in the field.

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