[Civil Engineering Society Symposium Presentation] Practical Report on Black Rust Conversion Technology Published in J-STAGE

Can be directly painted on rusted surfaces, reducing the effort of rust removal. A water-based powerful rust converter evaluated for performance in a demonstration test by the Ministry of Land, Infrastructure, Transport and Tourism. Contributes to labor-saving in repairs.

"Select Coat N300 (Rust Change)" is a water-based powerful rust converter that is not subject to organic regulations. If left untreated, red rust (an unstable state) will continue to progress, but by simply applying this product, you can convert the red rust itself into black rust (a stable state) protected by a strong binding force and a hard coating. Please feel free to contact us when you need our services. 【Features】 - A new rust prevention method that converts rust into a black coating, eliminating the need for complete rust removal (only loose rust needs to be removed) - Corrosion protection technology that has undergone verification tests and performance evaluations by the Ministry of Land, Infrastructure, Transport and Tourism - Applicable to iron surfaces, galvanized steel, aluminum, and other non-ferrous metals due to new bridging technology - Designed to accommodate everything from emergency measures to full-scale rust prevention strategies - Easy and safe to handle as a water-based single-component product 【Applications】 Rusty iron parts and products such as iron gates, fences, handrails, shutters, machinery, agricultural tools, steel structures, tanks, piping, containers, bicycles, and multi-story parking lots.

• Rust Inhibitor

Easier rust prevention for ships. Stabilizing red rust on decks and internal structures, achieving extended life through simple repairs.

The deck and internal structures of vessels are prone to rust and salt accumulation due to the effects of seawater and humidity, which increases maintenance burdens. Select Coat N300 can be utilized as a water-based rust converter that is effective even in areas where type 1 rust removal is difficult, serving as a simple rust prevention and extension measure. Generally, it is desirable for the amount of attached salt before painting to be below 100 mg/m², but N300 has been confirmed in a Ministry of Land, Infrastructure, Transport and Tourism demonstration test to not cause undercoat corrosion or blistering even in high salt environments with attached salt levels of 360 to 660 mg/m². It is also effective for repairs of rust that occur from the time of docking until the next inspection, as well as for daily maintenance by crew members. 【Usage Scenarios】 - Rust repair for decks and internal structures where type 1 rust removal is difficult - Priming and corrosion prevention for ballast tanks - Simple repairs for rust that occurs during the operational period - Extension measures until the next docking - Daily maintenance by crew members 【Implementation Effects】 - Stabilizes red rust and suppresses corrosion progression - Contributes to the extension of the hull and equipment through simple repairs - Reduces work burden without the need for heavy machinery or power tools - Allows for on-site responses by crew members - Lowers maintenance costs during the period outside of docking

• Rust Inhibitor

Communication tower repair specifications for complex structures and high-altitude construction.

Communication towers have complex shapes due to their truss structure, with many areas such as bolt joints and lap joints that are difficult to prepare thoroughly. Additionally, conditions such as working at heights, strong winds, and scaffold restrictions make surface preparation a significant burden in terms of safety and scheduling. N300 is a rust-converting paint that transforms red rust into black rust. It does not assume full blasting and serves as a substrate repair material designed for areas where surface preparation is difficult, thereby reducing the burden of construction. It contributes to reducing work time at heights and can be combined with various topcoats depending on the condition and specifications of the existing paint film. It can be utilized as a rational substrate treatment method in the repair of communication towers. 【Usage Scenarios】 - Communication towers with truss structures where surface preparation is difficult - Sites with significant scaffold restrictions, such as mountainous areas or rooftops - Localized corrosion repair at bolt and lap joints - Measures to extend the lifespan until planned renovations - Renovation work where full blasting is not realistic 【Benefits of Implementation】 - Rationalization of surface preparation processes - Reduction of work time at heights - Improvement of construction safety - Control of construction costs - Flexibility in maintenance management plans

• Rust Inhibitor

No need to differentiate between red rust and non-ferrous materials. A new standard for lighting pole repairs.

This is a water-based rust converter that enables simple repairs and rust prevention for metal structures such as streetlight poles and other poles. It chemically stabilizes red rust (turning it into a black coating) and reduces excessive scraping work, achieving both labor savings and improved durability. It exhibits excellent adhesion even to non-ferrous metals, such as zinc and aluminum, which are generally considered difficult to paint. Its performance has been confirmed by tests conducted by the Japan Paint Inspection Association. Additionally, the effectiveness and durability regarding red rust on iron parts have been verified through demonstration tests by the Ministry of Land, Infrastructure, Transport and Tourism. After neutralizing the red rust, it is protected with a silicone acrylic resin coating, and the non-corroded and non-ferrous metal parts can also be treated with the same specifications. This eliminates the need for different types of paint, contributing to simplified material management, streamlined processes, and reduced maintenance costs. 【Usage Scenarios】 - Repair of rust on lighting poles and arm sections, as well as non-corroded areas - Rust prevention treatment for signposts and pipe poles (including non-ferrous parts) - Longevity measures for iron outdoor lights and decorative metal fittings - Support for both localized and comprehensive repairs 【Benefits of Implementation】 - Neutralization of red rust and suppression of re-corrosion - Reduced risk of peeling due to high adhesion to non-ferrous metal parts - Simplification of construction through unified specifications - Shortened construction period and reduced maintenance costs

• Rust Inhibitor

Just paint over the rust! Reduce maintenance costs for plant equipment.

In plant facilities, the progression of rust on outdoor steel structures and piping is unavoidable, posing risks of large-scale repairs and operational shutdowns. Select Coat N300 can be applied directly over rust, allowing for the omission of extensive rust removal work, contributing to reductions in both work time and costs. It is also effective as a renewal method that can be implemented with limited surface preparation, even in environments where the use of electric tools is restricted due to fire hazards. Additionally, it is a water-based single-component product that is highly safe and can be used for interim measures until regular repairs, as well as for emergency repairs. 【Usage Scenarios】 - Rust prevention for steel structures and piping in plant facilities - Emergency repairs in urgent situations - Temporary maintenance until regular maintenance 【Benefits of Implementation】 - Reduction in work time and costs - Extension of equipment lifespan - Improved safety

• Rust Inhibitor

Make rust prevention during rail repair and storage easier. It stabilizes red rust and enables extended life through simple rust prevention.

In railway facilities, rust on rails and metal components can progress rapidly due to usage environments and storage conditions, leading to increased replacement frequency and maintenance costs. Select Coat N300 (Rust Change) is a water-based rust converter that can be used alone as a simple rust prevention and prolongation measure during rail repairs and storage. By chemically stabilizing exposed red rust, it allows for easy repairs without the need for excessive rust removal work. Additionally, it demonstrates good adhesion not only to red rust areas but also to non-ferrous metals such as galvanized steel, making it applicable to partially rusted overhead line poles and signal equipment boxes. Even in components where red rust and non-corroded areas coexist, stable corrosion prevention measures can be implemented through integrated application. 【Usage Scenarios】 - Simple rust prevention and prolongation measures during rail repairs and storage - Maintenance and repair of railway bridges and overpasses - Partial rust prevention measures for overhead line poles (galvanized components) - Corrosion prevention for metal equipment such as signal equipment boxes 【Implementation Effects】 - Stabilizes red rust and suppresses re-corrosion - Contributes to the prolongation of rails and components through simple rust prevention - Improves work efficiency under time constraints, such as nighttime construction - Allows for integrated application regardless of ferrous or non-ferrous components

• Rust Inhibitor

Minimize rust removal from rebar after chipping. Stabilize rust simply by applying a coating, and proceed to the next process.

In tunnel maintenance, rust on rebar can cause concrete spalling and section loss, leading to a decrease in the durability of the structure. Particularly inside tunnels, issues such as work restrictions, extended construction periods, and increased costs associated with repair work are significant challenges. Amid these challenges, spalling repairs require treatment of the rust on exposed rebar after chipping, which traditionally has demanded considerable time and effort for surface preparation. By using Select Coat N300, the remaining red rust on exposed rebar can be chemically treated and converted into a stable state. This allows for the omission of excessive rust removal work, contributing to the rationalization of the repair process, shortening of construction periods, and reduction of total costs. 【Application Scenarios】 - Spalling repair of rebar inside tunnels - Rust treatment of rebar before cement and mortar placement - Reduction of work burden in repair construction 【Implementation Effects】 - Suppresses the progression of rust on rebar, contributing to improved durability - Shortens construction processes, leading to reduced construction periods and costs - Contributes to safety and reduced environmental impact through the use of water-based paint

• Rust Inhibitor

Rust prevention for bridges! Just apply it to convert rust and reduce work burden.

In bridge maintenance management, rust is a factor that shortens the lifespan of structures, and in environments with salt damage or on heavily trafficked routes, the impacts of repair work on construction periods, costs, and traffic regulations are significant challenges. Additionally, when repainting coatings that contain substances like PCBs, methods that involve strict protective measures for dust prevention and safety and environmental considerations are often adopted to remove the coatings. After the removal of the coating, red rust remains, which traditionally required additional substrate adjustments such as blasting or scraping, leading to extended construction periods and increased costs. By using Select Coat N300, the remaining red rust after coating removal can be treated chemically, allowing for the omission of additional substrate adjustment processes. This contributes to a reduction in overall construction time and total costs, as well as improvements in environmental measures and safety. 【Application Scenarios】 - Rust prevention for steel components in bridges - Reduction of construction time in repair work - Decrease in maintenance management costs 【Implementation Effects】 - Suppression of rust progression, contributing to the longevity of bridges - Reduction in construction periods and costs due to shortened construction time - Contribution to reduced environmental impact through the use of water-based paints

• Rust Inhibitor

Just paint over the rust. Streamlining automotive repair work.

In the automotive maintenance industry, proper treatment and repair of rust are essential to maintain vehicle safety and aesthetics. In particular, rust caused by external factors such as aging and de-icing agents progresses quickly if left untreated, leading to reduced vehicle lifespan and the need for re-repair. Traditional rust prevention methods often require rust removal or parts replacement, which can be challenging in areas where the thickness of the steel plate cannot be adequately secured. Select Coat N300 (Rust Change) is a rust-conversion type paint that can be applied directly over rust, allowing for rust treatment without excessive grinding of the steel plate, contributing to the simplification of the repair process and improved work efficiency. It has a proven track record in high-frequency rust occurrence sites, such as repairs for large vehicles in snowy regions, leading to reduced risk of recurrence and extended lifespan of vehicle outer panels. 【Usage Scenarios】 - Rust repair for vehicle bodies, frames, mufflers, etc. - When rust treatment is desired without parts replacement - When aiming to simplify the repair process and reduce work time 【Benefits of Implementation】 - Reduction in repair work time - Cost reduction through decreased parts replacement and labor - Suppression of recurrence through rust conversion and extension of vehicle lifespan

• Rust Inhibitor

An article has been published about the case of introducing the expense reimbursement system "Rakuraku Seisan" at TSP Corporation. ~ In the case of TSP ~ Before the introduction, there were challenges such as dealing with the "paper" sent from various locations and the reliance on specific individuals for the tasks. After the introduction, the input and checking of FB data, which used to take 2 to 3 hours, can now be completed in just 5 minutes. Additionally, the mindset of the accounting department, which was previously reliant on manual entry, has changed. [Case Overview] ■ Challenges before introduction - Dealing with "paper" sent from various locations, reliance on specific individuals ■ Key points of introduction - A robust support system for setup and operation - Easy to start from a small scale both financially and functionally *For more details, please refer to the related links or feel free to contact us.

Engineering Meetup Report is Now Available! We have published the event report from the AI Startup Engineering Meetup, held at Google for Startups Campus Tokyo. The event brought together four AI startups, where engineers and engineering leaders with backgrounds at major companies shared insights on: ◆Product development ◆Career journeys ◆AI-related initiatives Kort Valuta was represented by our Chief Operating Officer and a Backend Engineer, who shared perspectives on product development in the fintech industry and the unique development environment of a startup. The networking session that followed sparked meaningful conversations on technology and career development, creating valuable new connections among participants. At Kort Valuta, we will continue to value collaboration with the technology community while striving to build even better products. Read the event report: https://prtimes.jp/main/html/rd/p/000000126.000076589.html We're hiring! If you're interested in building the future of fintech with us, check out our careers page: https://recruit.kortvaluta.com/?utm_source=WEB&utm_medium=sns&utm_campaign=ipros

We have published a white paper titled "Half a Year of Procrastination vs. Full Operation in 3 Months - Conditions for Companies That Should Use Initial Setup Support," aimed at companies considering the introduction and operation of attendance management systems. This document clearly explains the key points of initial setup that are prone to difficulties during implementation, as well as the differences between handling it in-house and utilizing specialized support. If you want to smoothly launch an attendance management system, please take a look.

From July 2026 until the end of September, we will hold a Summer Grand Appreciation Festival! High-pressure washers at great prices! Plan 1: A special set of SP60L/60new/60DX/60GE comes with a free Z swivel joint set! Plan 2: Customers who purchase a compressor will receive a new red hose (30m) for free! Plan 3: Washing hose [6M] available at a special price! A wide range of popular high-pressure washer series, cleaning accessories, painting machines, compressors, and other products are also available! Items listed can be purchased at great deals! Don't miss this opportunity!

(Japan) Termite Control Association Hachikusan FL No. 3359 (Japan) Termite Control Association Hachikusan MC No. 3511 The update from July 1, 2026, is now available.