Metallic structures

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Protective coating

Ensure long-lasting corrosion protection in the toughest field conditions with Sames’ high-performance manual Airless solution—combining the robust Azur pump and precise Sflow spray gun for unmatched reliability, efficiency, and finish quality.

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In civil engineering, protecting metallic infrastructures, such as bridges, pipelines, and offshore platforms from corrosion is critical to ensure long-term durability and safety. Manual airless spraying is a preferred method for applying high-performance anti-corrosion coatings in demanding field conditions.

To meet the rigorous requirements of this application, Sames offers a complete manual spraying solution combining the Sflow airless spray gun and the Azur pump. Designed for use with single-component paints, pre-mixed 2K coatings, and zinc-rich materials, this system delivers a high-quality finish with maximum reliability.

The Azur pump is the backbone of this solution, providing powerful and stable material transfer without compromising finish quality. Built for harsh and intensive environments, it ensures uninterrupted operation and consistent performance, even with the most abrasive or high-viscosity protective coatings. Its rugged design, simple maintenance, and user comfort make it the go-to choice for professionals in the protective coatings industry.

Paired with the Sflow gun, which operates at up to 470 bar (6800 psi), applicators benefit from excellent coating control, precise film builds, and a reduction in overspray. The ergonomic design of the Sflow ensures user comfort during long shifts, while maintaining high application efficiency across a wide range of substrate shapes and sizes.

Together, the Azur pump and Sflow gun form a high-performance manual airless solution for on-site corrosion protection, ensuring long-lasting protection and operational efficiency on every project.

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Main benefits

Fast, smart maintenance for zero disruption: Quick filter swaps, easy seal access, and intuitive design across both pump and gun keep your team focused on spraying—not fixing.

Precision Spraying with High Transfer Efficiency: Achieve up to 81% material transfer efficiency and reduce overspray with Sflow’s high-end Tungsten carbide tips.

Unmatched application efficiency: Reduce waste and speed up jobs with Sflow’s 81% transfer efficiency and Azur’s pulsation-free flow, even with high-viscosity coatings.
Engineered for comfort, built for endurance: Ergonomic grip, fatigue-free trigger options, and durable components make this solution a long-term ally for demanding metal structure jobs.

Metallic structures Solution FAQ

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  • How do I set the coating thickness with airless spraying?

    Achieving the correct coating thickness with airless spraying requires careful adjustment of several key parameters:
    Spray Tip Size: The spray tip orifice determines the amount of material delivered. A larger tip delivers more paint and can build up a thicker film, while a smaller tip is more suitable for lighter coats or thin materials. Always use the tip size recommended for your coating type to avoid over- or under-application.
    Spray Pressure: Higher pressure atomizes the coating more finely, improving coverage but potentially reducing build thickness if the material is over-atomized. Conversely, too low pressure can lead to poor atomization and uneven application. Set the pressure to the lowest value that still achieves a uniform spray pattern, to minimize overspray and material waste.
    Application Speed: Slower gun movement across the surface increases the deposited material per pass, resulting in a thicker film. Faster movement reduces the film build. Consistency in speed is crucial to achieving a uniform coating.
    Distance to the Surface: The ideal spraying distance is typically 25–30 cm (10–12 inches). Holding the gun too close can cause runs or sagging due to excessive material, while spraying from too far can result in dry spray and poor coverage. Maintaining a consistent distance helps control both film thickness and finish quality.
    Number of Passes: If the desired thickness cannot be achieved in a single coat, apply multiple passes or coats, allowing appropriate flash-off or curing time between layers. This is especially important for high-build coatings or corrosion protection systems.
    Wet Film Thickness (WFT) Monitoring: Use a wet film thickness gauge during application to verify that the applied film is within the target range. This allows for real-time adjustments and helps ensure that the final dry film thickness meets the specification once solvent or water evaporates.

  • How can I achieve a high-quality finish with my airless application?

    Use the correct tip type and size for your coating. Sames offers a wide range including Skill® tips, designed for optimal atomization and smooth finishes with minimal overspray. Combine with proper spraying distance and stable pressure from the Azur pump for best results.

  • Why choose Sames for airless spraying over other solutions?

    Sames combines high transfer efficiency (up to 81%), robust durability, and ergonomic design in its airless technology. The Sflow gun and Azur pump are built for high-performance applications in tough environments, with smart maintenance features and patented tools that reduce downtime and increase operator comfort.

  • Can the system handle high viscosity coatings?

    The Azur pump features a powerful hydraulic section and optional 2" suction hose designed to handle materials up to 30,000 cps. It ensures smooth flow without pulsation, making it ideal for spraying thick, high-build protective coatings on metal structures.

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