What Solidian-Kelteks does

Solidian-Kelteks is a Croatia-headquartered (Karlovac) manufacturer of non-corrosive fiber reinforcements, operating two brand divisions: solidian for construction-grade reinforcements (carbon, glass, basalt, and aramid meshes, rebars, prefabricated elements, and seismic retrofitting systems) and kelteks for composite-industry fabrics (woven roving, unidirectional, chopped strand mat, complex, needled reinforcements, and resins). The underlying technology embeds carbon, glass, basalt, aramid, or natural fibers in polymer matrices (epoxy, SBR, or acrylate dispersions) to produce reinforcement grids and fabrics that eliminate the steel corrosion failure mode in concrete and composite structures, enabling 3-5x higher tensile strength versus steel, up to 50% material savings, and service life exceeding 100 years. The company holds Germany's first General Building Approval (abZ) from DIBt for carbon reinforcement mesh and a European Technical Assessment (ETA 23/0383) for its ANTISEISMIC CRM/FRCM/FRP system, with products specified through German tender catalogs (ausschreiben.de, bauhersteller.de) and CAD/BIM detail libraries.

The company is a subsidiary of the German Groz-Beckert Group (founded 1852, family-owned), which became the strategic partner and capital provider in 2014 after Kelteks began as a Croatian garage startup in 1990 producing standard technical textiles. Approximately 40% of total revenue is generated from products developed in-house on proprietary machines and technologies created in its own development center and material laboratory (operational since 2015), with the remaining revenue from established composite product lines. Revenue derives primarily from hardware sales (meshes, rebars, fabrics, resins, gelcoats, topcoats, accessories) supplemented by professional services including structural engineering consultation, pre-dimensioning support, and on-site application guidance.

Commercial operations are run via a direct enterprise field-sales model with named regional sales managers covering 20+ countries, supported by an events and content-marketing engine (accredited CPD webinars, industry exhibitions including Burgdorfer Brückenbautag 2025 and Carbonbetonage 2025, and DGNB/C³/CU Bau memberships). The company serves enterprise customers across construction (architects, structural engineers, precast manufacturers, infrastructure managers like ASFINAG), maritime (Branagh Marine Composites), civil engineering (Züblin, HABAU), and niche consumer applications (Cyclik e-bikes), with nearly 90% of products exported and a planned 2024-2026 EUR 25 million investment expanding capacity by 20 new production lines and 60 new machines to grow headcount from 350 to 500.

Name

Solidian-Kelteks

Legal name

KELTEKS d.o.o.

Website

https://solidian-kelteks.com

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

251–500 employees

Short description

Solidian-Kelteks is a Croatia-based manufacturer of non-corrosive carbon, glass, basalt, and aramid fiber reinforcements for construction (under the solidian brand) and composites (under the kelteks brand), serving enterprise customers across infrastructure, maritime, automotive, and industrial sectors globally via its parent Groz-Beckert Group's distribution network.

Ownership category

akta.pro rank

Product category

Construction Reinforcement Materials

NAICS

Artificial and Synthetic Fibers and Filaments Manufacturing (325220)

SIC

Plastic Materials, Synth Resins & Nonvulcan Elastomers (2821)

akta.pro primary industry

Composite Reinforcement Textiles (Carbon/Glass/Aramid Fabrics & Preforms) (IMAOADAH)

akta.pro secondary industries

Concrete Reinforcement Accessories & Fibers (IMADAAAF), FRP/GRP & Composite Materials (Resins, Fibers, Core Materials) (IMAJAKAC)

Keywords

• Carbon fiber reinforcement
• Non-metallic reinforcement
• Textile reinforced concrete
• Composite reinforcement materials
• Construction reinforcement meshes

Headquarters

HQ city

Karlovac

HQ country

Croatia

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Non-metallic reinforcement products: Sale of carbon, glass, basalt, and aramid fiber reinforcement products for construction and composite industries. Products include meshes (solidian GRID, ANTICRACK, BRIKSY), rebars, fabrics, prefabricated reinforcements, and accessories. Approximately 40% of total revenue is generated from products developed by company engineers.
2. Technical services and engineering support: Structural engineering consultation, pre-dimensioning support, and technical advisory services. Includes structural design support, approval consultation, and on-site application guidance.
3. Resins and coatings: Sale of complementary products including gelcoats, resins (orthopthalic, isophtalic, iso-NPG, DCPD, and Vinylester-based), and topcoats for composite manufacturing.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels7 records

Core offering

Solidian-Kelteks manufactures non-corrosive fiber reinforcement products including carbon, glass, basalt, and aramid meshes, rebars, prefabricated elements, and seismic retrofit systems for the construction industry. The company also produces composite reinforcement materials such as woven rovings, chopped strand mats, unidirectional fabrics, needled reinforcements, and complex multi-layer fabrics for composite manufacturers. They provide complementary gelcoats, resins, topcoats, and structural engineering consultation including pre-dimensioning and design support.

Product overview

Solidian-Kelteks is a leading European manufacturer of non-corrosive reinforcements serving both the construction and composite industries. The product portfolio is organized into two main divisions: Construction (solidian-branded products including GRID Carbon/Glass, ANTICRACK, Primafloor, Briksy, REBAR, ANTISEISMIC systems, TUBE, CARGO System) and Composites (kelteks-branded products including FreeMat, Woven Roving in glass/carbon/basalt/natural fibers, CombiMat, FormMat, Chopped Strand Mats, Complex, and Resins & Coats). Products are unified by their non-metallic, corrosion-resistant properties using carbon, glass, basalt, or natural fibers. The company offers a complete ecosystem including reinforcements for concrete (meshes, rebars, prefabricated elements), seismic retrofitting solutions (CRM, FRCM, FRP systems), composite manufacturing materials, and supporting accessories like the CARGO System and spacers.

Differentiator

Problem solved

Functional benefit

Products and services

• solidian GRID Carbon Ultra-strong, lightweight, and corrosion-resistant carbon grid reinforcement for load-bearing concrete components. First and only carbon reinforcement mesh in Germany with DIBt General Building Approval (abZ), approved for use in standard and prefabricated construction including parking decks, balconies, ceilings, swimming pools, and facades.
• solidian GRID Glass

Quantifiable outcome

• Up to 50% material savings (concrete, cement, water, aggregates)
• +7 more outcomes

Named customers10 records

Segments1 record

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

Seven partnerships are on record, tiered minor and significant.

• Faculty of Textile Technology ZagrebminorStrategic or Co-development Partner · 8 November 2024R&D cooperation with Department of Materials, Fibers, and Textile Testing. Visit formalized partnership for collaboration in textile technology and non-metallic reinforcement research.
• Hans Claussen ASminorStrategic or Co-development Partner · 24 May 2022Norwegian project partner for Kelteks Solar Power Plant project. Project co-financed by grants from EEA Financial Mechanism 2014-2021 and 'Energy and Climate Change' program. Total project value EUR 876,318.70 with EUR 345,764.62 in grant funds. Project includes 499 kW solar power plant with 2,032 photovoltaic panels reducing electricity consumption by 28%.
• Omnis KompozitsignificantChannel Partner/ Reseller/ DistributorRegional partner in Turkey executing multiple construction projects with solidian products. Collaborated on villa projects with Model Yapı, pool and terrace applications with Arı Yalıtım and Evren Havuz, masonry projects with Edda Architecture and Go-Tek Yapı, seismic retrofitting, and FRCM applications.
• Prof. Dr.-Ing. Ali Shams (Karlsruhe University of Applied Sciences)minorStrategic or Co-development PartnerAcademic partner and speaker for online seminars (CPD). Provides accredited professional training on carbon concrete fundamentals, applications, and design recognized by Chambers of Engineers in Germany.
• C³ - Carbon Concrete Composite e.V.significantStrategic or Co-development PartnerActive member of largest research project in German construction industry. Project involves consortium of over 140 partners researching carbon concrete composite material in 61 joint projects and 300+ individual projects since 2014. Contributed to sustainability, recycling, and environmental compatibility working groups.
• German Sustainable Building Council (DGNB)minorStrategic or Co-development PartnerMember of non-profit organization developing and promoting sustainable building solutions. Supports sustainable construction initiatives and alignment with ESG and EU Directives.
• CU Bau (Composites United)minorStrategic or Co-development PartnerMember of supra-regional specialist network promoting acceptance and widespread use of fibre-reinforced materials in construction industry for members from industry and science.

Scale indicators12 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Mapei: Mapei is an Italian global manufacturer of adhesives, sealants, and chemical products for construction including reinforcement systems. Comparable as an incumbent in construction reinforcement with overlap in screed reinforcement, repair mortars, and structural strengthening systems for concrete.
• Jushi Group: Jushi Group is the world's largest Chinese glass fiber manufacturer producing fiberglass reinforcements for composites, construction, and industrial applications. Comparable as a large-scale incumbent in fiber reinforcement supply, particularly overlapping in glass fiber products for composites and infrastructure.
• SGL Carbon: SGL Carbon is a established German carbon-based materials company producing carbon fibers, graphite products, and composite components. Comparable as a broader incumbent in carbon fiber materials for industrial applications, though at significantly larger scale and broader product portfolio than Solidian-Kelteks.
• Owens Corning: Owens Corning is a global US-based building materials manufacturer producing glass fiber reinforcements for composites and construction. Comparable as an incumbent supplying glass fiber reinforcements into similar end markets (construction, composites) but at vastly larger scale across multiple product categories.
• Sika AG: Sika is a Swiss specialty chemicals company producing concrete admixtures, reinforcement systems, and construction chemicals. Comparable as a broad incumbent in construction reinforcement and concrete technology, though focused on chemical solutions rather than fiber reinforcements.
• Teijin Carbon: Teijin Carbon (formerly Toho Tenax) is a Japanese-German carbon fiber manufacturer producing PAN-based carbon fibers for aerospace, automotive, and industrial applications. Comparable as an incumbent in carbon fiber supply that competes with Solidian-Kelteks for composite and industrial fiber end markets.

Others

• Bekaert: Bekaert is a Belgian global steel wire and reinforcement technologies company producing steel fibers for concrete reinforcement. Comparable as an alternative reinforcement technology provider - steel fibers compete against carbon/glass fiber reinforcements for concrete applications, particularly in tunneling, flooring, and shotcrete segments.

Direct peers

• Tudalit: Tudalit is a German carbon concrete textile reinforcement specialist and direct competitor. Both companies are members of the C³ - Carbon Concrete Composite consortium, produce carbon fiber meshes for concrete reinforcement, and target the same DACH construction market for abZ-certified reinforcement products.
• SAERTEX: SAERTEX is a German manufacturer of multiaxial non-crimp fabrics and reinforcement materials for composites. Direct competitor in the kelteks Composites division, particularly for automotive, wind energy, marine, and aerospace applications using carbon, glass, and aramid fiber reinforcements.
• Chomarat: Chomarat is a French technical textiles manufacturer producing reinforcement fabrics and textiles for composites and construction. Comparable as a European textile reinforcement specialist serving both construction (textile-reinforced concrete) and composite (multiaxial fabrics) end markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/solidiankelteks
• LinkedInlinkedin.com/company/solidiankelteks

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Solidian-Kelteks