Are you an existing customer or do you want to contact us in a different matter? We look forward to hearing from you and will get back to you as soon as possible.

Alternatively, you may want to contact directly one of our locations or our holding company.

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    Standorte Coatinc Bochum Coatinc Rhein-Main Coatinc Peine Coatinc Becker Saarlouis Coatinc Siegen Coatinc PreGa Coatinc24 Coatinc Würzburg Coatinc Ninove Coatinc NinoCoat Zinkpower Malacky Galvanizadora California California Galvanizing & Steel Structures Coatinc Alblasserdam Coatinc24 Amsterdam Coatinc Nederland Coatinc De Meern Coatinc Groningen Coatinc Groningen Poedercoat Coatinc Mook Coatinc Prega NL Coatinc Roermond Coatinc Anox Zinkpower Promptus Zinkpower Ostrava Zinkpower Roudnice Marmara-Siegener Galvaniz Marmara-Siegener Galvaniz Marmara-Siegener Galvaniz Rezinal Verzinkerij Lenssen ESP Pulverbeschichtung ESP Pulverbeschichtung

    If you wish to talk to our management team, please get in touch with one of our points of contact, who will take care of any request which goes beyond pure surface finishing.


    The Coatinc Company Holding GmbH
    Steinstraße 5
    57072 Siegen, Germany
    Phone: +49 271 43478
    Fax: +49 271 46869

    Your contact person
    Diana Posner


    The Coatinc Company Holding GmbH
    Steinstraße 5
    57072 Siegen, Germany
    Phone: +49 271 43478
    Fax: +49 271 46869

    Your contact person:
    Petra Böhmer

    Contact Holding company

    The Coatinc Company Holding GmbH

    Carolinenglückstraße 6-10
    44793 Bochum, Germany
    Phone: +49 234 52905-0
    Fax: +49 234 52905-15

    Your contact person:
    Silke Sandmeier

    The Duplex system

    In recent years, hot-dip galvanizing has been increasingly used to provide an additional organic coating to enhance the protection of components exposed to major loads or to combine the customer’s preferred colors with corrosion protection. Essentially, either galvanizing plus powder coating (duplex powder) or wet paint coating systems (duplex system wet) can be applied after hot-dip galvanizing. In most cases, the component surface is first trimmed, swept or given a wet-chemical treatment.

    Greatly enhanced duration protection by the duplex system

    When the durability of a Duplex system with the durability of a conventional system are compared, it becomes clear that combining two systems will significantly increase protection duration. This synergy effect can increase service life by a factor of up to 2.5. The Duplex system is effective due to the mutual protection of the two components. The zinc coat is protected from atmospheric and chemical impacts by the additional coating, thereby avoiding wear and tear. Furthermore, the hot-dip galvanizing prevents or delays corrosion creep and detached coating in the event of damage.

    Applications & benefits of the duplex system

    Double or multi-layer systems are recommended for coastal or outdoor use in industrial areas, in chemically contaminated environments, for road salt application in tunnels and on bridges and for products which require a long lifespan. Multi-layer systems are standard with or without galvanizing, depending on the requirements profile. Advantages:

    • Functional and decorative
    • Excellent appearance – even after long-term use
    • Significantly increased protection duration due to synergistic effect

    Functionality of multi-layer systems: Duplex system

    • A pre-treatment is initially performed with a chrome layer, which both seals the pores in the galvanized surface and acts as an etch primer and substrate protection.
    • The application of an epoxide resin onto the substrate then creates a pore density, evens out any unevenness and reaches corners and holes. And last but not least, the epoxide resin acts as a waterproof layer which is resistant to chemical damage.
    • Finally, a polyester or polyurethane coating is applied. This not only ensures a beautiful sheen of color but also creates a glossy surface finish.

    All services at a glance

    • Optimal advice
    • Material preparation
    • Surface finishing
    • Secondary operations
    • Quality management
    • Packaging
    • Large projects
    • Express delivery
    • Export handling
    • Customized logistics solutions

    Duplex coating – explained in 90 seconds

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