Denmark is the birthplace of the modern offshore wind industry — Ørsted (formerly DONG Energy) pioneered the world’s first offshore wind farm at Vindeby in 1991 and today operates the world’s largest offshore wind portfolio. Denmark’s maritime and offshore industries Maersk (shipping), MAN Energy Solutions (marine engines), Vestas (wind turbines), and FORCE Technology (marine testing) are sustained consumers of ring-rolled structural forgings, marine propulsion shaft forgings, and wind tower flange forgings. Indian forging manufacturers with AS9100D, ABS marine approval, and EN 10025-3 ring rolling capability are positioned to supply the Danish market.
Company
Sector
Key Forging
Standard
Ørsted (Copenhagen)
Offshore wind developer
Tower flanges (indirect through OEM)
S355NL EN 10025-3
Vestas (Aarhus)
Wind turbine OEM
Tower flanges, bearing rings
S355NL, 42CrMo4
MAN Energy Solutions (Copenhagen)
Marine diesel engines
Crankshaft throws, connecting rods
ABS / DNV survey
A.P. Møller-Maersk (Copenhagen)
Shipping and logistics
Propulsion shaft, rudder stock
ABS / Lloyd’s Register
Hempel (Lyngby)
Marine coatings — substrate forgings
Structural test forgings
EN / ASTM industrial
Denmark’s offshore wind sector — driven by Ørsted’s global offshore wind leadership and the Danish government’s target of 35 GW offshore by 2050 is the primary industrial driver of Danish forging demand. Ørsted procures wind turbines from Siemens Gamesa and Vestas whose supply chains manage tower flange and bearing ring procurement globally. Indian ring rolling manufacturers who are on Siemens Gamesa or Vestas approved supplier lists supply Danish offshore wind projects without requiring direct Ørsted qualification.
MAN Energy Solutions — headquartered in Copenhagen and producing the world’s most widely used marine two-stroke diesel engine (the MAN ME and ME-C series) is one of the most significant marine engine forging consumers globally. Each MAN ME engine’s crankshaft contains 6–14 individual throw forgings in 34CrNiMo6 alloy steel. MAN’s crankshaft throw forgings are precision-geometry open die forgings requiring 100% UT and dimensional inspection within tight tolerances. The crankshaft assembly manufacturer (typically Hyundai Heavy Industries, Mitsui, or MAN’s own licensees) procures these throw forgings from MAN’s approved supplier list.
Maersk — operating the world’s largest container shipping fleet requires propulsion shaft and structural forgings for its vessel fleet maintenance and new vessel commissioning. Maersk’s technical management organisation (Maersk Tankers, Maersk Supply Service) procures replacement propulsion shaft forgings through classification society-approved channels. Bureau Veritas or Lloyd’s Register survey of heat treatment and mechanical testing is required.
Denmark’s shipbuilding industry — though smaller than its historical peak includes Fayard Shipyard (Munkebo) for naval vessel refits, and the Danish Navy’s maintenance of inspection vessels and patrol craft. The Danish defence spending increase (meeting NATO 2% target by 2030) is driving procurement of new naval patrol vessels whose structural and propulsion forgings require classification society survey.
S355NL ring rolling to Ø4,500mm for Vestas and Ørsted offshore wind programmes.
42CrMo4 bearing rings through-hardened 28–34 HRC.
ABS and Lloyd’s Register marine survey for Maersk propulsion shaft forgings.
34CrNiMo6 open die crankshaft throw forgings for MAN Energy Solutions supply chain.
NABL Charpy at -20°C and -40°C for North Sea offshore applications.
TPI by Bureau Veritas and DNV.
Ocean freight Chennai to Aarhus or Copenhagen: 22–28 days.
Frequently Asked Questions
1.What is MAN ME engine and what crankshaft throw forging specifications does it require?+–
The MAN ME (electronically controlled) series is the dominant two-stroke marine diesel engine in global container shipping and bulk carrier markets it powers approximately 60% of all newly built large merchant vessels. Each ME engine’s crankshaft is assembled from individual throw forgings in 34CrNiMo6 (equivalent to SAE 4340) alloy steel, quenched and tempered to 690–840 MPa tensile strength. Each throw forging weighs 500–3,000 kg depending on engine bore diameter (from S50ME at 500mm bore to G95ME at 950mm bore). The throw geometry two crank pins offset at the cylinder firing angle requires complex open die forging with precise angular positioning of the pins during forging. 100% UT per IACS UR W7 (unified requirement for crankshaft forgings) is mandatory.
2.What is Ørsted’s role in offshore wind forging procurement and how does Indian supply reach Danish projects?+–
Ørsted as a project developer purchases complete wind turbines not individual forged components. When Ørsted awards a turbine supply contract to Siemens Gamesa or Vestas, those OEMs manage the entire turbine supply chain including tower flange and bearing ring procurement. Indian ring rolling manufacturers supply tower flanges to Siemens Gamesa’s or Vestas’s approved tower manufacturers (Windar, Haizea, CS Wind) who incorporate the flanges into tower sections delivered to Ørsted’s project. Ørsted never directly approves or even sees the forging manufacturer the qualification sits entirely within the turbine OEM supply chain.
3.What Danish offshore wind projects are currently under construction and what forging demand do they create?+–
Danish offshore wind projects under construction or in late development include: Bornholm Energy Island (3 GW planned, Ørsted and partners), Thor offshore wind farm (1,000 MW, Vattenfall, Siemens Gamesa SG 14-236 DD turbines), and Hesselø offshore wind (1,200 MW, Ørsted). Thor uses SG 14-236 DD turbines whose tower base flanges are Ø5,500mm beyond current Indian capacity. However, the intermediate tower section flanges (Ø4,000-4,500mm) are within Indian capacity. Bornholm’s turbine selection is not yet finalised, making Indian ring rolling manufacturers well-timed to pursue qualification now before turbine OEM supply chains are locked in.
Denmark’s maritime cluster centred in Copenhagen, Aarhus, and Odense includes shipowners (Maersk, DFDS, Norden), ship managers, marine equipment manufacturers (Alfa Laval Denmark for heat exchangers, Haldor Topsoe for catalysts), and the Danish Maritime Authority regulating Danish-flagged vessels. The cluster creates forging demand for: propulsion shaft replacements for Maersk’s 700+ vessel fleet maintained through scheduled drydockings, heat exchanger tubesheet forgings for Alfa Laval’s marine heat exchangers, and structural fittings for newbuilds ordered by Danish shipowners at Korean and Japanese shipyards. Indian manufacturers with ABS and Lloyd’s Register survey approval can supply across all these categories.
5.What is IACS UR W7 and how does it govern marine crankshaft throw forging quality?+–
IACS UR W7 (Unified Requirements for Steel Forgings for Crankshafts) is the International Association of Classification Societies’ common standard for crankshaft throw forging quality adopted by all major classification societies (ABS, DNV, Lloyd’s Register, Bureau Veritas, ClassNK). UR W7 specifies: minimum tensile strength by crankshaft material grade, Charpy impact at -20°C minimum 27 J average, 100% UT with specified FBH reference size, magnetic particle inspection of all finished machined surfaces, and dimensional tolerances for the throw pin geometry. The UR W7 standard ensures that crankshaft throw forgings from any IACS-approved source are equivalent in quality enabling marine engine licensees worldwide to source from any IACS-survey-approved manufacturer.
