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Quality assurance for structural profiles – step by step 

Here you have an overview of how we manage quality in connection with our structural profiles and how we ensure full traceability and a constantly high level of quality for all of the profiles that leave our production process.


Receipt of orders and management of supply agreements and technical-specification requirements from the customer, in close collaboration with
the rest of the organisation.

Supply chain

Ordering of raw materials and arranging the optimal production process.

Production management 

Pultrusion setup using IFIX parameter management, and work instructions in the form of SOPs and verification instructions, ensure a continuous process flow and stable, uniform quality.

Raw materials

All of the raw materials involved in the production of profiles are checked by our subcontractors, and these checks are documented in the form of a Certificate of Authenticity (COA). Our suppliers are chosen carefully in order to perform this quality assessment, so quality and traceability are ensured before the raw materials even reach our production process.


We have to document all of the process parameters in order to be able to CE-mark our products. In addition to this, we carry out surface checks on all of our products, we use a mil gauge to measure paint thickness, and we have ISO-certified anti-slip surfaces.


All products that leave our production process have a production order number, date, pallet ID and CE marking printed on them to ensure full traceability of both the process parameters and the raw materials.


Cross-section measurements are taken to ensure that the geometry adheres to the tolerances in the specification. We also test the rigidity (elastic modulus), degree of hardening (DSC test), creep and strength (glass percentage).


Clear packing instructions and output QC checks ensure that the products have the best chance of going all the way to the customer without being damaged.

View our quality wheel here

Combining advantages

CE marking

Our products have a number of international and highly sought-after certifications, among other, within the construction, offshore and railway sectors. This is your guarantee of consistently high quality every time you buy from us and use our products.

Low weight

Fiberline's GRP profiles are low in weight. This makes them easier to work with and means that great weight savings can be achieved on the finished structure.

Great strength

Fiberline Building Profiles give you the same great strength as steel, but at only a quarter of the density. It is also possible to make weight savings in comparison with aluminium, as the density is 30 % lower.


Our fibreglass profiles are resistant to aggressive chemicals, and liquids. This makes them ideal for wastewater treatment plants, swimming pools, cooling towers and construction, where there is a risk of corrosion.

Chemical resistance

Our fibreglass profiles are resistant to aggressive chemicals, liquids and alkalis. This makes them ideal for wastewater treatment plants, swimming pools, cooling towers and construction, where there is a risk of corrosion.

Electrical insulation

Fiberline's GRP profiles provide electrical insulation and minimise the complexity of earthing. This makes our profiles a future-proof choice where the costs of both installation and future inspections can be reduced considerably.

Easy to work with

GRP profiles are just as easy and fast to work with as timber. This means that solutions which incorporate our profiles can be installed easily on site or adjusted to fit existing components, such as piping systems, etc.

Thermally Insulating

Fiberline's fibreglass profiles have a significantly lower heat distribution gradient than steel and aluminium, enabling energy-efficient end products.

Minimal maintenance

Our GRP profiles have unrivalled durability and a long life, even in demanding conditions.


Fiberline's fibreglass profiles are produced using an energy-optimised process that takes the environment into consideration.

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