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Blast and Holding Primers
Blast and holding primers provide essential protection for steel surfaces between abrasive blast cleaning and final coating. They are designed to prevent corrosion during fabrication and weathering, allowing for welding and further treatment without compromising surface integrity. Epoxy-based options like Sherwin-Williams Macropoxy G280 and L574 offer welding and fabrication suitability, while International Intergard 276 and Hempel Hempadur 15590 are ideal for immersion applications. Zinc phosphate primers, such as PPG Sigma EP 110, deliver excellent rust prevention in industrial and coastal environments, offering long-term protection.
Sherwin-Williams Macropoxy L574
Sherwin-Williams Macropoxy L574 (formerly known as Metagard L574) is a two-pack temporary protective primer for steel surfaces prepared by abrasive blast cleaning.
Sherwin-Williams Macropoxy G280
Sherwin-Williams Macropoxy G280 (formerly known as Metagard G280) is a two pack epoxy zinc free prefabrication primer. It is a temporary protective for steel surfaces prepared by abrasive blast cleaning. Suitable for welding, cutting and forming when applied at the recommended dry film thickness. Two pack epoxy Temporary protective for...
Hempel Hempadur 15590
Hempadur 15590 is a two-component epoxy primer coating especially for use on surfaces exposed to severe abrasion. For professional use only Blast primer for heavy duty epoxy systems on submerged and non-submerged areas according to specification Air or airless spray application, for new builds, maintenence and repair More Information...
Jotun Penguard Tie Coat 100
Jotun Penguard Tie Coat 100 is a two component polyamide cured high molecular weight epoxy coating specially designed as a tie coat/sealer on top of inorganic zinc silicate primers, galvanised steel and thermally sprayed zinc. To be used as a primer in a complete system in atmospheric environments. Recommended for offshore environments,...
International Intergard 276
International Intergard 276 is a quick drying two component epoxy primer suitable for overcoating after prolonged periods of weathering, for use at both new construction and maintenance.
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Essential Protection for Steel Surfaces
Blast and holding primers play a critical role in protecting steel surfaces immediately after abrasive blast cleaning. These primers offer a temporary protective barrier, preventing corrosion during the fabrication process. They are ideal for projects where surfaces need to be shielded from the elements or further surface treatment is delayed.
Versatile Primers for Welding and Fabrication
For surfaces that require welding and fabrication, weldable epoxy primers such as Sherwin-Williams Macropoxy G280 and Macropoxy L574 are highly effective. Macropoxy G280 is a two-pack epoxy zinc-free prefabrication primer specifically designed for steel surfaces. It offers temporary protection, making it suitable for welding, cutting, and forming applications. Similarly, Macropoxy L574 delivers reliable temporary protection during welding and fabrication, ensuring surface integrity without compromising weld quality.
Epoxy Blast Primers for Immersion Applications
Specialist primers like International Intergard 276 and Hempel Hempadur 15590 are designed for heavy-duty environments, including submerged areas. These epoxy-based products ensure protection for steel surfaces exposed to harsh weather conditions or water immersion. International Intergard 276 is particularly useful for overcoating after long periods of weathering, suitable for both new construction and maintenance work. Hempel Hempadur 15590 is another epoxy system designed for submerged and non-submerged steel surfaces, making it an ideal choice for industrial and marine environments.
Rust Prevention in Challenging Environments
For projects located in industrial or coastal areas, zinc phosphate epoxy primers like PPG Sigma EP 110 are a preferred choice. Known for its excellent rust prevention properties, PPG Sigma EP 110 is registered with the Highway Agency (item 110) and approved by Network Rail (RT 98 item 7.1.2). This primer provides durable protection against corrosion in high-risk environments, ensuring longevity and performance.