Heavy Concrete Weight Coating for offshore pipelines

MagnaDense aggregate in concrete weight coating (CWC) for pipelines increases negative buoyancy and gives mechanical protection against sea motions.

Concrete Weight Coating for offshore pipelines

CWC pipeline coating with MagnaDense

Our customers, the offshore pipeline companies, mix MagnaDense into high-density concrete, which they apply to the pipelines and provide a heavyweight coating. Alternative subsea pipeline protection is concrete mattresses for which dense concrete is also used. Using our natural mineral in CWC coating for offshore pipelines will create more weight with less volume. Applying high-density concrete on pipelines reduces the concrete volume by up to 50%. Alternatively, it increases in weight by 80%  while keeping the equivalent strength to standard concrete.

Applying offshore pipeline concrete coating

Our customers, manufacturers of coated pipelines, use two different techniques to apply heavy concrete as a coating to the pipelines.

Independent of the application method you prefer, MagnaDense is suitable for both. The coarse aggregate increases the weight of concrete. This ensures your concrete-coated pipes remain at the bottom of the sea and give mechanical protection.

The correct heavy concrete mix

When preparing heavy-density concrete for your pipelines, remember that MagnaDense replaces sand and gravel, but other concrete ingredients remain the same. Moreover, you can use standard concrete mixing equipment. Ultimately, the density of the concrete will vary depending on pipeline diameter and sea depth. Therefore, the average density for pipeline coating ranges between 3.2 and 3.4 t/m3.

Ask your LKAB Minerals sales managers for help selecting the right combination of MagnaDense grades. We have a brochure with concrete weight coating projects available upon request.

Global availability and offshore pipe coating projects

LKAB Minerals provided MagnaDense to many concrete pipe coating projects and pipe coating companies all over the world. We have global stock locations and owned mines in Northern Sweden. Therefore, LKAB Minerals can assure that they will always be able to supply a high-quality heavy aggregate. This will ensure your production of concrete weight coated pipes at your preferred location year-round.

A shortlist of projects that have concrete coated pipes with MagnaDense concrete are:

Contact your local salesperson and ask for the project brochure, datasheets, or about the MagnaDense possibilities for your upcoming pipeline project.