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NKT Flexibles

A Denmark-based supplier of flexible subsea and offshore pipeline systems.

Last updated August 24, 2026

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Overview

NKT Flexibles was a Danish flexible-pipeline business serving offshore energy and chemical applications. The company was created in 1999 when it was separated from NKT Cables and established as a joint venture between NKT, which held 51 percent, and Subsea 7, which held 49 percent. Its business focused on engineered flexible-pipe systems used where offshore production, subsea equipment, and topside facilities require controlled movement, bending capacity, or accommodation for thermal and operational expansion. The company’s principal product scope included dynamic risers, static risers, static flowlines, subsea and topside jumpers, and expansion joints. These products were designed for demanding environments in which conventional rigid piping can be difficult to install or unable to tolerate the required movement. NKT Flexibles’ pipe construction was described as an unbonded structure: helically wound metallic armour wires or tapes were combined with concentric polymer, textile, fabric-strip, and lubricant layers. This architecture allowed the pipe to provide pressure containment and mechanical strength while retaining flexibility. NKT Flexibles operated production facilities in Kalundborg and offices in Brøndby, Denmark. Its commercial reach extended beyond Denmark through projects and agreements with international offshore customers. The company’s activities included both equipment supply and the development of manufacturing capacity intended to support large offshore projects. In May 2011, it announced a second frame agreement with Petrobras of Brazil, potentially valued at up to DKK 9.7 billion. The announcement also included plans for a production facility at Brazil’s Açu Superport, reflecting the importance of Brazil’s offshore market to the company’s growth plans at that time. In 2012, NKT Flexibles was acquired by National Oilwell Varco, the Houston-based oilfield-equipment company later renamed NOV Inc. The transaction ended the company’s previous joint-venture ownership structure and brought the flexible-pipeline operation into NOV’s broader industrial and energy-equipment portfolio. The reported acquisition price was DKK 3.8 billion. Public reference material identifies NKT Flexibles primarily through its flexible-pipeline activities and locations; detailed information about its post-acquisition branding, standalone legal status, current product portfolio, and present operating footprint is limited. Accordingly, its current status as an independently operating brand cannot be confirmed from the available material.

History

NKT Flexibles originated in Denmark’s cable and industrial-engineering sector. In 1999, it was separated from NKT Cables and formed as a joint venture between NKT and Subsea 7. NKT retained a 51 percent interest, while Subsea 7 held 49 percent. The new company concentrated on flexible pipeline technology rather than conventional cable manufacture, supplying systems for offshore and chemical-industry use. Its core technology was an unbonded flexible pipe. The structure combined helically wound metallic armour wires or tapes with multiple concentric layers made from polymers, textiles, fabric strips, and lubricants. This arrangement was intended to provide a combination of pressure resistance, mechanical reinforcement, and flexibility. The product family covered dynamic and static risers, static flowlines, subsea and topside jumpers, and expansion joints. These systems could be used in subsea production arrangements and in connections between offshore equipment and topside facilities. The company maintained production facilities in Kalundborg and offices in Brøndby. Its business developed an international dimension through offshore-project relationships, including work connected with Brazil. In May 2011, NKT Flexibles disclosed a second frame agreement with Petrobras. The arrangement was reported to have a potential value of up to DKK 9.7 billion and was associated with the proposed establishment of a Brazilian manufacturing facility at Açu Superport. In 2012, National Oilwell Varco acquired NKT Flexibles for a reported DKK 3.8 billion. The buyer was headquartered in Houston and was subsequently renamed NOV Inc. in 2021. The acquisition changed NKT Flexibles from a joint venture owned by NKT and Subsea 7 into a business controlled by NOV. Available reference material does not establish whether the NKT Flexibles name continues as a distinct current brand, legal entity, or operating division, nor does it provide a complete post-acquisition history. The documented historical identity of the subject is therefore centered on its Danish origin, its unbonded flexible-pipeline technology, its Petrobras expansion initiative, and its 2012 acquisition by NOV.

  • 2012

    Acquisition by National Oilwell Varco

    [1]

    National Oilwell Varco acquired NKT Flexibles in a transaction reported at DKK 3.8 billion.

  • 2011

    Second Petrobras frame agreement

    [1]

    The company announced a second frame agreement with Petrobras, potentially worth up to DKK 9.7 billion, together with plans for a production facility at Brazil’s Açu Superport.

  • 1999

    Formation as an NKT–Subsea 7 joint venture

    [1]

    NKT Flexibles was formed after being separated from NKT Cables. NKT held 51 percent of the joint venture and Subsea 7 held 49 percent.

Products and positioning

An engineering-led supplier of flexible pipe and connection systems for offshore, subsea, topside, and chemical-service environments, emphasizing movement tolerance and suitability for demanding operating conditions.

  • Offshore flexible pipelines

    Dynamic risers

    Flexible riser systems intended for offshore applications where the pipe must accommodate movement between subsea equipment and floating or otherwise mobile facilities. NKT Flexibles’ unbonded construction used metallic reinforcement and layered polymer and textile components to combine pressure containment with operational flexibility.

  • Subsea pipeline systems

    Static risers and flowlines

    Static risers and flowlines formed part of the company’s flexible-pipeline portfolio for fixed or comparatively low-movement sections of offshore production systems. Their layered unbonded construction was designed for demanding subsea service while retaining installation and routing flexibility compared with rigid pipe.

  • Flexible connection systems

    Subsea and topside jumpers

    Subsea and topside jumpers provided flexible connections between pieces of offshore production or processing equipment. They were part of NKT Flexibles’ engineered systems offering and were intended to manage routing, movement, and connection requirements in compact or technically constrained installations.

  • Industrial piping components

    Expansion joints

    Expansion joints were supplied for applications requiring accommodation of thermal or operational movement in piping systems. They complemented the company’s flexible-pipe products and extended its offering beyond risers and flowlines into connection and movement-management components for offshore and industrial environments.

Brand decisions

  • 2012

    Sale to National Oilwell VarcoM&A

    Background

    NKT Flexibles had operated as a joint venture between NKT and Subsea 7 since 1999.

    Action taken

    National Oilwell Varco acquired the business and assumed control of the flexible-pipeline operation.

    Aftermath

    The acquisition ended the documented NKT–Subsea 7 joint-venture ownership structure. The available material does not clarify the subsequent standalone branding or legal status of NKT Flexibles.

    Acquisition price. DKK 3.8 billion (2012 acquisition)

  • 2011

    Pursuit of Brazilian manufacturing capacityStrategy

    Background

    A second frame agreement with Petrobras created an opportunity to support Brazilian offshore activity and was linked to plans for a facility at Açu Superport.

    Action taken

    NKT Flexibles announced the planned establishment of a Brazilian production facility as part of the Petrobras-related arrangement.

    Aftermath

    The available reference material does not document whether the planned facility was completed or how the initiative developed after the subsequent acquisition by National Oilwell Varco.

    Potential frame-agreement value. Up to DKK 9.7 billion (2011 announcement)

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