Manufacturing of offshore wind steel foundations – monopiles, transition pieces, towers, jackets and floating foundations
Dajin Heavy Industry
Penglai · Tangshan · Panjin · Yangjiang · Fuxin · Xing An'meng · Zhangjiakou (China)New on Amplifa
About Dajin Heavy Industry
Dajin Heavy Industry is a Chinese steel construction specialist for offshore and onshore wind energy, manufacturing foundations and components for wind turbines – including monopiles, transition pieces, turbine towers, jackets and floating foundations. The company produces large-format steel structures using welding processes; a three-legged jacket built to European standard has been certified by DNV. The company has cumulatively delivered equipment for more than 100 GW of new energy capacity to over 30 countries, including the UK, Germany, India, Thailand, Vietnam and Japan. Customers and partners include Jumbo (construction of two L-Class heavy-lift vessels), the AD Ports Group and the Hornsea 3 offshore wind farm. An own shipping fleet with 240 m long deck carriers (capacity approx. 50,000 t) enables cost-optimized, operational shipping of XXL components to offshore wind farms worldwide. Offshore manufacturing facilities with ports as well as onshore manufacturing sites are available at several locations in China.
- Site
- Penglai
- Processes
- Monopile manufacturing (offshore wind foundations), Transition piece manufacturing, Tower manufacturing (wind turbine towers), Jacket manufacturing (three-legged offshore jackets, DNV certified, European standard), Floating foundations, Heavy-lift vessel construction (L-Class for Jumbo), Design and manufacturing of offshore wind foundations (monopiles, transition pieces, towers,, Own global shipping fleet (deck carriers, XXL transport)
- Materials
- Steel (offshore wind steel construction), Monopile manufacturing, Heavy-lift shipbuilding
- Certificates
- DNV (product certification, European standard jacket), DNV product certification (mono-jacket, European standard), ISO 9001
- Industries
- Offshore wind energy, Onshore wind energy, Renewable energies, Renewable energies / new energy equipment
- 01
Order intake/engineering
- 02
Steel structure manufacturing
- 03
Welding fabrication of offshore components
- 04
Quality inspection and certification (DNV)
- 05
Mechanical shipping with own fleet
- 06
Global transport to wind farms
Materials and Processes
Steel (offshore wind steel construction)
Main material for monopiles, transition pieces, towers, jackets, floating foundations and shipbuilding.
Monopile manufacturing
Large monopiles for offshore wind farms, e.g. in the Hornsea 3 project.SCH:request-evaluation.
Heavy-lift shipbuilding
Construction of two L-Class heavy-lift vessels for Jumbo; assembly of major shipbuilding projects.
Sites and Facilities
Penglai
CNOffshore manufacturing plant and port
- Materials
- Steel
- Port facilities
- Steel structure manufacturing
Tangshan
CNOffshore manufacturing plant and port
- Materials
- Steel
- Port facilities
- Steel structure manufacturing
Panjin
CNOffshore manufacturing plant and port
- Materials
- Steel
- Port facilities
- Steel structure manufacturing
Yangjiang
CNOffshore manufacturing plant
- Materials
- Steel
- Steel structure manufacturing
Fuxin
CNOnshore manufacturing plant
- Materials
- Steel
- Steel structure manufacturing
Xing An'meng
CNOnshore manufacturing plant
- Materials
- Steel
- Steel structure manufacturing
Zhangjiakou
CNOnshore manufacturing plant
- Materials
- Steel
- Steel structure manufacturing
Manufactured Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Monopile manufacturing (offshore wind foundations)Joining | – | – | – | – | Steel |
| Transition piece manufacturingJoining | – | – | – | – | Steel |
| Tower manufacturing (wind turbine towers)Joining | – | – | – | – | Steel |
| Jacket manufacturing (three-legged offshore jackets, DNV certified, European standard)Joining | – | – | – | – | Steel |
| Floating foundationsJoining | – | – | – | – | Steel |
| Heavy-lift vessel construction (L-Class for Jumbo)Assembly | – | – | – | – | Steel |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Deck carrier (self-transporter for XXL products) | – | – | L 240 m × W 51 m, capacity approx. 50,000 t, draft 8 m | – | – |
Additional services
Reference customers
Quality and Certification
Three-legged offshore jackets built to European standard have been product-certified by DNV. According to the company, Dajin manufactures to the strictest industry specifications for the North Sea environment.
| Evidence | Penglai | Tangshan | Panjin | Yangjiang | Fuxin | Xing An'meng | Zhangjiakou |
|---|---|---|---|---|---|---|---|
| DNV product certification (mono-jacket, European standard) | |||||||
| ISO 9001 |
History
- 2026-03
Shipment of a monopile batch for Hornsea 3; maiden voyage of the company's own vessel KING ONE
- 2026-03
Presence at WIND EXPO Japan 2026 with integrated offshore wind foundation solutions
- 2026-05
Start of the first DNV-certified three-legged offshore jacket built to European standard in China (prototype for North Sea environment)