Category Archives: Structural Steel

Structural Steel

Structural Steel FAQ, Part 3 – Evaluating Rust and Mill Scale Pre- and Post-Blast

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Surface preparation can account for up to 40 percent of structural steel painting and repainting jobs. As Rosler’s Structural Steel FAQ series has already established, the life of anti‐corrosion coatings on a steel surface depends to a large extent on how thoroughly the surface has been prepared for painting.

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Application of anti-corrosion paint in a preservation line blasting system.

Properly evaluating the surface of structural steel surfaces for coating before and after shot blasting will help balance the cost of preparing, repairing, and monitoring structural steel throughout its impressive lifespan.

This installment of our Structural Steel FAQ series will answer How are rust and mill scale evaluated pre‐ and post‐blast?

The Standards

Widely used standards were developed to visually assess the initial surface conditions and the quality of the required surface preparation relative to the initial steel surface conditions.

The dominant standards for evaluating rust and mill scale are ISO 8501‐1:2007 (based on the Swedish standard SIS 05 59 00), SSPC Vis 1‐89, and NACE. While different in some minor details, these standards are practically identical.

Continue reading Structural Steel FAQ, Part 3 – Evaluating Rust and Mill Scale Pre- and Post-Blast →
Structural Steel

Structural Steel FAQ, Part 1 – Why Surface Preparation is Necessary

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Structural steel components are used in many industries, including construction and construction equipment, shipbuilding, and the production of all kinds of heavy-duty vehicles, trucks, railway vehicles, and agricultural implements. In the construction of bridges, building of ships, or production of equipment that must withstand heavy loads, steel is selected for its strength and durability.

To live up to its full potential and prevent premature failure, the steel must be guarded against corrosion with a protective coating. Shot blasting plays an indispensable role in preparing the steel surface for such coatings. Partnering with a shot blasting expert such as Rosler can help you determine the shot blasting equipment, blast media, and processing required for your structural steel components.

In a series of blog posts, Rosler will answer the most common questions about the surface preparation and coating of structural steel.

We begin with a basic question: Why do structural steel components need to be prepared for protective paint coating?

The answer, in short, is for the best coating results and longevity.

Continue reading Structural Steel FAQ, Part 1 – Why Surface Preparation is Necessary →
Structural Steel

Surface Preparation Standards, Part 2 – Dust Measurements and Considerations

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As an expert in the surface finishing industry, Rosler knows that all the expertise in the world won’t do any good if the surface of the work piece is not properly prepared.

When it comes to structural steel, we receive many questions about preparation. Among the most common questions is, “How is the presence of dust on shot-blasted structural steel components evaluated?”

Understanding dust considerations and mitigation will help produce higher quality and longer-lasting structural steel components more cost-effectively and safely.

The Dangers of Dust

Blast-cleaned structural steel surfaces must be completely free of dust to ensure proper coating and painting. Residual dust will reduce the adhesion of subsequently applied coatings and, by absorbing moisture, may promote the corrosion of the blast‐cleaned steel surfaces.

The potential accumulation of dust is especially critical on horizontal surfaces, the interior of pipes, and inside structural cavities. Special inspections must be carried out to ensure that such areas are adequately cleaned and free from dust before painting.

Continue reading Surface Preparation Standards, Part 2 – Dust Measurements and Considerations →
Shot Blasting, Structural Steel

Surface Preparation Standards, Part 1 – Evaluating Surfaces Throughout Finishing Processes

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Surface preparation can account for up to 40 percent of structural steel painting and repainting jobs and the life of anti‐corrosion coatings on a steel surface largely depend on how thoroughly the surface was prepared before painting.

At Rosler, we have extensive experience evaluating structural steel surfaces for coating before and after shot blasting. This knowledge of surface preparation standards and the widely used ISO and SSPC standards guide us in developing systems to expertly prepare and repair structural steel throughout its lifespan.

The Standards

Evaluating rust and mill scale pre- and post-shot blasting is a must. It is important to clearly specify the quality of the surface prior to preparation as well as the surface conditions after preparation. As a result, standards were developed to visually assess the initial surface conditions and the quality of the required surface preparation relative to the initial steel surface conditions.

The dominant and widely used standards for evaluating rust and mill scale are ISO 8501‐1:2007 (based on the Swedish Standard SIS 05 59 00) and the SSPC (Steel Structures Painting Council). While different in some minor details, these standards are practically identical.

Continue reading Surface Preparation Standards, Part 1 – Evaluating Surfaces Throughout Finishing Processes →
Consumables, Structural Steel

A Year in Review – Top Blog Posts from 2019

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At Rosler, we believe in helping our clients in unique markets find a better way to finish and process their products. According to Grand View Research, Inc., the global structural steel market is expected to reach USD 140.4 billion by 2025. It is projected to expand at a CAGR of 5.6% during the forecast period. Increasing construction spending in emerging economies is projected to drive the demand for structural steel. Maybe that’s why our top posts this year included a series on Structural Steel. Enjoy the following recap.

5. Optimal Media Mix, Part 1 – Identifying and Maintaining Proper Levels

The best mass finishing equipment is useless without the proper media. That’s why the experienced engineers at Rosler Metal Finishing pair their quality equipment with the right type and amount of media to achieve consistent results.

Media comes in all kinds of shapes and sizes

Understanding how your machine, the work pieces it is finishing, and the selected media will interact is key to delivering an optimal finish each cycle. Doing so requires understanding why media levels are important, determining and tracking levels, and evaluating media consumption to avoid issues.

Continue reading A Year in Review – Top Blog Posts from 2019 →
Structural Steel

Structural Steel FAQ, Part 12 – Material Handling Options

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Imagine the ability to clean, shot peen, and paint I-beams for commercial construction, without having to move the heavy and bulky piece manually. The most well-equipped preservation line would be much less useful without adequate material handling systems.

That’s why Rosler Metal Finishing builds material handling systems into preservation lines to accommodate a wide range of structural steel components before and after the surface finishing process.

This installment of the Structural Steel FAQ Series will answer What types of material handling systems are available for shot blasting and painting structural steel components?

The most common methods of handling systems are roller conveyors and overhead rails. More specialized options also exist.

Continue reading Structural Steel FAQ, Part 12 – Material Handling Options →
Structural Steel

Structural Steel FAQ, Part 11 – Preservation Lines

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Structural steel components are prone to rust quickly and fail with potentially catastrophic consequences if not covered with a suitable, protective coating.

In preparing for use in construction, shipbuilding, and the production of all kinds of heavy duty vehicles, trucks, railway vehicles, agricultural implements or construction equipment, it is important to apply proper surface finishing processes to these components for safety and longevity.

Offering painting and shot blasting in a single source, preservation lines are a great option for structural steel components including steel plates, beams, round bar stock, and tubes.

In this installment of our Structural Steel FAQ Series, Rosler Metal Finishing will answer What are the key components of a preservation line?

Continue reading Structural Steel FAQ, Part 11 – Preservation Lines →
Shot Blasting, Structural Steel

Structural Steel FAQ, Part 10 – Blast Rooms for Touch-Ups

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When it comes to shot blasting complex weldments like the chassis for construction equipment, excavator booms, and wind power components, sometimes even the best turbine placement may not clean all the nooks and crannies of the work piece’s surface.

Surface finishing experts such as Rosler Metal Finishing have solved this issue with the addition of manual blast rooms to automatic shot blast systems.

This installment of our Structural Steel FAQ series will answer When are blast rooms behind turbine blast machines required for manual touch-up?

Continue reading Structural Steel FAQ, Part 10 – Blast Rooms for Touch-Ups →
Structural Steel

Structural Steel FAQ, Part 2 – Methods of Surface Preparation

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Structural steel is a widely used material in a variety of industries due to its strength and durability. Our last post in the Structural Steel FAQ series established why this material must be prepared – namely to preserve its strength and longevity. This post will describe the type of surface preparation required before shot blasting structural steel.shipbuilding2938x450

In order to stand up to the harsh demands of the construction, shipbuilding, and heavy equipment industries, the most appropriate type of surface preparation must be undertaken to ensure the best shot blasting results possible.

As always, consult a surface finishing expert such as Rosler Metal Finishing with to discuss your specific components, their condition, and the desired outcome for your structural steel applications.

We turn to another FAQ about structural steel: What type of surface preparation is required prior to shot blasting?

The answer depends on the condition of the component…

Read more about structural steel surface preperation

Structural Steel

Structural Steel FAQ, Part 1 – Why Surface Preparation is Necessary

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Structural steel components are used in many industries, including construction, shipbuilding, and the production of all kinds of heavy duty vehicles, trucks, railway vehicles, agricultural implements or construction equipment. From the construction of bridges, building of ships or production of equipment that must withstand heavy loads, steel is selected for its strength and durability.

To live up to its full potential and prevent premature failure, the steel must be guarded against corrosion with a protective coating. Shot blasting plays an indispensable role in preparing the steel surface for such coatings. Partnering with a shot blasting expert such as Rosler Metal Finishing can help you determine the shot blasting equipment, blast media, and process required for your structural steel components.

In a series of blog posts, we’ll answer the most common questions about the surface preparation and coating of structural steel.

We begin with a basic question: Why do structural steel components need to be prepared for protective paint coating?

Read more about surface preparation for structural steel