Structural Profiles

Our Offering

Gurit Structural Profiles’ primary focus in the wind industry is to strengthen turbine blade parts such as root sections inserts and profiles for spar caps and webs. In close collaboration with our customers, we push the boundaries for our composites, to achieve optimised solutions for the next generation of wind turbine blades.

Carbon Pultrusion

Manufactured to fit specific customer requirements

Wind Turbine Structures

Strong and durable constructions

Blade Root Reinforcements

Combining unique strength and design

Previously Fiberline Composites, founded in 1979 and acquired by Gurit in 2022, the primary activity of Gurit Structural Profiles is the manufacturing of pultruded composites profiles in glass and carbon, and is dedicated to supporting the wind industry with supplying structural parts to strengthen wind turbine blade parts such as root section insert and profiles for spar caps and shear webs.

Our Structural Profiles headquarters is based in our iconic building in Middelfart, Denmark, which is centrally located to the blade development centres for all major OEMs. In addition to manufacturing, the location also hosts a Technology centre where new products and technologies are developed in close cooperation with our customers. Our manufacturing facilities in Tianjin, China, and Chennai, India, have also grown to become significant elements in supporting our customers globally.

Gurit Structural Profiles is a world leader in pultrusion technology, materials design, composite mechanics and is a trusted supplier to the global wind industry. This role has put us in a position to be technology launch supplier for major wind OEMs as they implement pultruded carbon spar caps in their blade design, in order to continue to meet the demand for longer and longer blades.


With more than 30 years of experience and strong process engineering and material knowledge, we know how to exploit the unique opportunities of our glass and carbon fiber composites. Therefore, we are well positioned to advise our customers on both material choices and solution design.

Our project development stage gate model has fully embedded the APQP4Wind standard, as a key enabler to ensure customer alignment at all levels in the project development phases. The APQP4Wind standard is strongly supporting our preventive approach to Quality, in terms of shifting mindset from QC to QA. When we understand the specification, the associated critical parameters and the expectations then we have a sound foundation to fulfill and even exceed customer expectations. The detailed planning and deliverables described in the APQP4Wind manual ensures that risks and challenges are communicated and managed on time.


At Gurit, quality is at the heart of our business and everything we do. Our quality system is designed to ensure that our customers think of us as a professional business partner that provides composite solutions of the very highest quality whilst creating added value. We measure customer satisfaction through close contact with our customers and by performing an annual survey. We are therefore able to react quickly to significant deviations and keep our focus on constant improvement. Among other things, we use the 8D Problem-Solving Process, with the target of giving our customers an initial response within 48 hours.

We use the APQP process in our development work, in a systematic, structured approach to achieve the agreed values for quality and material properties. To supplement this, we also use elements from the automotive industry in order to ensure process stability and thus reduce errors; specifically, these elements are: PPAP, FMEA, MSA, SPC.

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