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Davi and GS Entec Reach Major Milestone Site Acceptance Tests (SAT) Successfully Completed in South Korea

Scaling XXL Offshore Wind Foundations: How Davi and GS Entec Completed SAT in South Korea

Website

gsentec.com

Location

South Korea

Industry

Wind Energy

Related products

MCB , MAV , CUSTOM AUTOMATED LINES

The Challenge

As the global offshore wind market expands, developers are transitioning to larger, deeper-water wind farms. This shift requires next-generation substructures—such as monopiles and jacket foundations—utilizing steel plates of unprecedented thickness and complex geometries. For pioneering fabricators like South Korea’s GS Entec, entering this high-capacity market presented a clear operational challenge: How do you roll thick-walled, heavy-duty cylindrical and conical steel cans with extreme precision while complying with strict local safety and electrical certifications? In heavy rolling, even a millimeter of deviation can compromise structural performance, lead to massive material waste, or halt downstream assembly lines.

The Solution

Tailored Heavy-Duty Rolling TechnologyTo support GS Entec’s strategic entry into the offshore wind substructure sector, Davi supplied two high-performance plate rolling lines:

Davi MCB ZA45 (Four-Roll Plate Roll): Designed to deliver unmatched repeatability, high speed, and complete automation, ensuring safe, high-volume rolling of massive cylindrical shells.
Davi MAV 45-520 (Three-Roll Variable Axis Plate Roll): Configured for heavy-duty applications like calibration, re-rolling, and extreme conical forming.

Designed in Italy with robust frames, these systems were fully customized to meet South Korea's demanding electrical and safety regulatory standards. Both machines feature Davi's patented Servo-Tronic rolls parallelism system, which ensures that even in the unlikely event of an electronic failure, the rolls remain synchronized mechanically and hydraulically to prevent any unplanned downtime.

The Results

Shortest Flat Ends & Zero Slippage

Standard motorized rolls on both machines maximize torque transmission and grip, allowing plates to be positioned perfectly at the tangent point to achieve the shortest flat end.

Unparalleled Conical Bending Performance

The MAV’s progressive bumping mode and its swingable, pendular shaft-mounted gearboxes allow for stress-free roll tilting of up to 100 mm (4") for every 3 meters (10ft) of roll length, streamlining the production of tapered wind tower sections.

Operational Autonomy

Following physical installation, Davi field engineers remained on-site for an extra week to guide GS Entec's team through advanced conical rolling, ensuring their operators could confidently handle complex, multi-radius profiles.

The Credibility Milestone: SAT Successfully Completed on Schedule

The final phase of this multi-million dollar installation was completed in South Korea, where a dedicated Davi field service engineer worked alongside GS Entec’s production team. The Site Acceptance Tests (SAT) concluded with outstanding performance results and zero delay:

The Davi MCB successfully passed SAT on April 10, 2026.
The Davi MAV successfully completed its SAT on April 17, 2026.

Both heavy-duty machines are now fully commissioned and operational, ready to fuel South Korea’s transition to renewable offshore energy.