Reliable and modern equipment and solutions

PEMA welding and production automation for offshore and process industry

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

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

PEMA solutions are developed to safely and efficiently handle heavy steel structures and unconventional alleys used in the production of, for example, pressure vessels and nuclear reactors.

PEMA welding and production automation systems for offshore & process

Pressure Vessel Manufacturing

Specially designed solutions for pressure vessel manufacturing ensure efficiency and quality

PEMA solutions cover all welding and material handling needs during these phases.

Highest safety

Heavy vessel production automation requires rigid rollerbeds and large size welding Column & Booms or welding platforms. Efficient material transportation without unnecessary crane activities is ensured with transfer cars. We have everything you need for modern pressure vessel manufacturing.

The semi-narrow gap SAW technique is used on welding exceptionally thick plate, typically 2-6 inches.

A narrow, preformed 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.

PEMA’s 100- 1200-ton rollerbeds are designed to meet the special needs of 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.

Integrated circular milling

PEMA welding platform

C&B and Assembly station integration

PEMA Nozzle Welding

PEMA Nozzle Welding Station: Robotized solution for pressure vessels

Pressure vessel manufacturing: 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. Furthermore, automation reduces defect rate and saves manual welding hours typically required for a time-consuming and demanding multi-layer welding procedure.

Automated programming

Adaptive welding

Reduced defect rate

PEMA Nozzle Welding: A flexible solution

PEMA Nozzle Welding Station: Versatility for pressure vessels

Flexibility with PEMA nozzle welding

PEMA Nozzle welding solution is versatile. With our PEMA Nozzle welding solution, you are not limited to weld only nozzle connections. In addition to that, you can also weld circular and longitudinal seams, support legs, and other external components.

Integrated welding and cladding

Pressure vessel manufacturing: dish end production

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.

Welding and cladding

Heavy duty positioners

Solutions designed for dish end fabrication

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Dramatically reduces welding time and improves quality

Pressure vessel manufacturing: shell fabrication & assembly

Special functions have been designed to make the workflow even more easily. PEM 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.

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 wind tower assembly

Milling of longitudinal seams

Longitudinal seam welding station

PEMA Assembly station

Milling is crucial for heavy welding

Pressure vessel manufacturing: milling

It increases production efficiency, saves welding time and significantly improves the welding quality.

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Circular Seam Preparation and Root Opening

Boost your pipe production

Pipe manufacturing: special 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.

External and longitudinal pipe welding

Large and small diameters

Combined welding processes

Automate the demanding pipe manufacturing phases

Pipe manufacturing: pipe component fabrication

When implemented well, the process is fast and brings immediate results in production capacity and end quality.

Fast process, immediate results

The offering of automated PEMA welding and production solutions cover welding heavy and thick walls in pipe elbows and assemblies, such as valve frame welding.

Our experts optimize the right handling equipment and welding Column & Boom from our extensive selection of 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 inour pipe fabrication equipment.

A specific range of Column & Booms are designed for internal
welding of pipe elbow segments as well for external welding
operating in integration with PEMA Positioners.

In synchrony with PEMA material handling

Internal pipe elbow welding

Valve welding

Wide range of automated solutions

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


Efficient heavy-duty welding

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

Half a century of excellence

PEMA automated welding solutions

With 50 years of experience, Pemamek manufactures various automated solutions for the needs of offshore and process equipments industry:

  • Welding positioners
  • Welding Column&Booms
  • Welding roller beds

Click HERE to find out more about PEMA solutions.

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