Seamless steel pipes for the Oil & Gas industry

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Protective coating of seamless steel pipes

Implement VOC-free paint systems for protective coating of seamless steel pipes in heavy industry environments.

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The long tubes (approximately 13 m) are conveyed one by one under a ramp of 4 to 6 Airless ASB240 spray guns. They are then rotated while the guns move longitudinally spraying the single-color protective paint. This paint had been previously transferred with a diaphragm 04D140 pump from delivery packaging to the preparation tank in the paint kitchen, then agitated and brought to CTM valves located close to each consumption point by means of a high-pressure pump 30C980. Regsmart paint pressure regulators near each sprayer allow the system to be balanced. Finally, at the end of the production sequence, a purge recovery system allows the circuit paint and cleaning solvents to be connected. The entire paint preparation tank, paint circulation pipes, and airless sprayers are protected from freezing by means of electrical tracing solutions.

Interactive diagram for information purposes

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Main benefits

Spray VOC-free WB sensitive paints in non-climate-controlled spaces during the coldest winters months

Designed for harsh environments

Easily servicable

Threaded pipes for the Oil & Gas industry Solution FAQ

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  • How do you ensure that each sprayer has the same paint flow?

    To ensure consistent paint flow across all sprayers—especially when multiple guns are used—several elements are critical:

    Regsmart pressure regulators placed near each ASB 240 Airless spray gun provide precise control at the point of use, ensuring uniform flow despite circuit variations.

    A 30C980 high-pressure pump with continuous circulation and tank agitation maintains steady pressure and paint consistency.

    Reversible tips allow quick clearing of clogs, minimizing downtime and keeping flow stable.

    Preventive maintenance and daily/weekly cleaning routines (including purge recovery) ensure long-term consistency by preventing buildup and equipment wear.

  • How do you prevent tips from clogging?

    Clogged tips reduce spray quality, waste paint, and interrupt production. Preventing clogging is essential for keeping your Airless or Airmix® system running efficiently.
    Here’s how to minimize tip blockages:
    Use Proper Filtration: Install filters at key points in the system—such as the pump outlet, gun handle, and even the paint intake—to stop debris or dried particles from reaching the tip.
    Maintain Clean Paint Circuits: Follow daily and weekly cleaning routines to prevent paint build-up in hoses and equipment. Use proper flushing procedures after every shift or color change.
    Keep Paint Properly Mixed and Conditioned: Ensure coatings are properly mixed, agitated and filtered before use, especially high-solids or fast-drying materials.
    Control Pot Life and Temperature: Avoid leaving paint in the system beyond its pot life, when using 2-3K, and ensure proper temperature control to keep the paint fluid. This is especially important for fast-reactive products.
    Preventive Maintenance: Regularly inspect tips, filters, regulators, and pumps for wear or residue. Worn tips  clog more easily and reduce both spray quality and transfer efficiency.

  • How do you refill the preparation tank without stopping production?

    To ensure continuous production, Sames systems are designed with a paint kitchen architecture that allows for refilling the preparation tank without interrupting spraying operations.
    Use a Diaphragm Transfer Pump for Autonomous Refilling: The 04D140 diaphragm pump transfers paint from the delivery packaging (drums, containers) to the preparation tank while production is running. This allows new batches of paint to be added without disrupting flow to the spray guns.
    Maintain Agitation During Refill: The preparation tank is equipped with an agitator, keeping the paint homogeneous as it is being refilled. This avoids color or viscosity variations during production.
    Circulation System with Buffering Effect: The high-pressure 30C980 pump circulates paint from the preparation tank to the Regsmart regulators and spray guns. The system acts as a buffer, maintaining steady pressure and flow, even during refilling.
    Follow Refill Procedures for Clean Transitions: Operators follow a controlled refill process that includes straining incoming paint and preventing air intake, ensuring smooth tank integration without contamination or foaming.

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