OHTA CO., LTD. Product Lineup

"CAELAR LB" is a high corrosion-resistant rust prevention treatment technology that achieves corrosion resistance equivalent to or greater than austenitic stainless steel, despite being made of ordinary steel. It features a surface treatment that is strong against scratches that occur during the driving of self-drilling screws and the tightening of bolts. Additionally, it can be applied to austenitic stainless steel, further enhancing the high corrosion resistance of stainless steel. By combining three types of coatings with different functionalities, it significantly improves corrosion resistance. Test results show no red rust formation after 2000 hours in a salt spray test. 【Features】 ■ High anti-corrosion performance ■ Completely chrome-free ■ Reduced hydrogen embrittlement ■ Weather resistance ■ Heat resistance ■ Gas resistance *For more details, please download the PDF or feel free to contact us.

"LAFRE" is a unique rust prevention treatment technology based on the concepts of environmental compatibility, thin film, and high corrosion resistance. It features an inorganic coating that contains three types of metals: zinc, tin, and aluminum, providing excellent adhesion and a tough coating rich in corrosion resistance, similar to alloy plating, to protect the substrate. While a two-coat application is standard, additional specifications such as topcoats can be added according to the intended use. Treatment can also be performed using a spray method (one coat) depending on the shape of the product. 【Features】 ■ Environmentally friendly ■ High corrosion resistance ■ Thin film and heat resistance ■ Hydrogen embrittlement treatment, suitable for high carbon steel ■ Coating properties ■ Adhesion of topcoats *For more details, please download the PDF or feel free to contact us.

We would like to introduce our product, 'RUSPERT Non-Chrome (For Stainless Steel).' By utilizing our unique technology to form a highly sealable coating, we protect stainless steel from various external corrosion factors and other phenomena. In addition to significantly reducing galvanic corrosion (dissimilar metal contact corrosion) on aluminum materials and high corrosion-resistant coated steel sheets, the treatment temperature is within 200°C, which does not affect the physical properties of the products. It is also suitable for spring products. 【Features】 ■ Protective performance ■ Reduction of galvanic corrosion ■ Reduction of galling ■ Environmentally friendly ■ Low-temperature treatment (low-temperature type) ■ Color variations *For more details, please download the PDF or feel free to contact us.

"RUSPERT Non-Chrome" has successfully achieved complete chromium-free processing while maintaining the same corrosion resistance as before, evolving into an environmentally friendly treatment. The conventional chromate treatment has been replaced with a chrome-free special chemical film. By firmly adhering to the top coat, it maintains performance equivalent to that of chromate treatment. It significantly reduces galvanic corrosion (dissimilar metal contact corrosion) on aluminum materials and high corrosion-resistant coated steel sheets. Since the treatment temperature is below 200°C, it does not affect the physical properties of the products. 【Features】 ■ Environmentally friendly: Completely free of the six substances regulated by RoHS, including hexavalent chromium, trivalent chromium, lead, cadmium, and mercury. ■ Also complies with REACH regulations. ■ Reduces galvanic corrosion. ■ Low treatment temperature (below 200°C). ■ Color variations: The basic colors are silver and black, with various options available to match the landscape. *For more details, please download the PDF or feel free to contact us.

"New RUSPERT" is a water-based high corrosion-resistant alloy coating that employs zinc-nickel alloy plating, demonstrating excellent corrosion resistance without chromium. Retaining the robust and dense composite film structure of the conventional RUSPERT, it has been reborn as an environmentally friendly water-based system. By adopting zinc-nickel alloy plating, a newly developed high-performance sealer, and a water-based coating, it achieves improved and stable corrosion resistance. Treatment using a spray method (1 coat) is also possible depending on the shape of the product. 【Features】 ■ Water-based system: Uses "water" as a solvent, significantly reducing VOC emissions ■ Completely chromium-free: No harmful chromium compounds are used at all ■ Reduces galvanic corrosion: Significantly reduces galvanic corrosion (dissimilar metal contact corrosion) on aluminum and high corrosion-resistant plated steel sheets ■ Color variations: In addition to the basic color of silver, a wide range of color variations is available *For more details, please download the PDF or feel free to contact us.

"DISGO" is a chrome-free, high corrosion-resistant surface treatment technology developed for steel products where delayed fracture due to hydrogen embrittlement from the electro-galvanizing process is a concern. It consists of a two-layer system formed by a base coat containing zinc aluminum and a top coat primarily made of aluminum and organic resin. The treatment can be broadly categorized into two types: low-temperature type and heavy corrosion-resistant type. It is capable of withstanding 2000 hours of salt spray testing and 200 cycles of composite cycle testing (heavy corrosion-resistant type), and it can also be used as a protective coating for stainless steel materials. 【Features】 ■ High corrosion resistance ■ Hydrogen embrittlement treatment, suitable for high carbon steel ■ Environmentally friendly ■ Reduces electro-corrosion ■ Low-temperature treatment (low-temperature type) ■ Control of friction coefficient is possible *For more details, please download the PDF or feel free to contact us.

"RUSPERT ZERO・TOP" is a transparent topcoat that combines two features: "barrier properties" that block the intrusion of corrosive factors, and "scratch resistance" that reduces rusting from scratches caused by transportation and construction. It has excellent adhesion and is a thin film baked layer of an organic-inorganic hybrid type, capable of suppressing rust caused by external factors and stabilizing rust prevention effects. Please feel free to contact us when you need assistance. 【Features】 ■ Prevents the intrusion of corrosive factors from scratches due to the suppressive effect of the Zero-Top film ■ Excellent adhesion with an organic-inorganic hybrid type *For more details, please download the PDF or feel free to contact us.

"DISGO (Low Temperature Type)" is a treatment specialized for rust prevention of steel products that are prone to property changes at processing temperatures. The DISGO treatment is a chromium-free, high corrosion-resistant surface treatment technology developed for steel products where delayed fracture due to hydrogen embrittlement from the electro-galvanizing process would be problematic. It is formed in two layers: a base coat containing zinc aluminum and a top coat primarily composed of aluminum and organic resin. With a processing temperature of 200°C, it falls into the lower category of baking treatments and is suitable for rust prevention of steel materials that have issues such as spring steel for seismic resistance and annealing problems. 【Features】 ■ Low temperature treatment (processing temperature 200°C) ■ High corrosion resistance: capable of 1000 hours in salt spray testing and 100 cycles in composite cycle testing ■ Environmentally friendly: does not use any of the six substances regulated by the RoHS directive, compliant with REACH regulations ■ Control of friction coefficient is possible: available in three types - low, standard, and high *For more details, please download the PDF or feel free to contact us.

"DISGO LANEW" is a rust prevention treatment technology that excels in edge coverage, utilizing a high hardness zinc metal layer and the advantages of our long-developed DISGO processing technology, resulting in high corrosion resistance and excellent workability. The synergistic effect of the rust prevention capability provided by the composite film of the zinc metal layer and high corrosion-resistant coating demonstrates high corrosion resistance with a thin film. Since the processing temperature is below 200°C, it does not affect the physical properties of the product. Paint accumulation in areas such as the cross holes for tapping is reduced, resulting in a sharp finish. The availability of five color variations enhances work efficiency by preventing misuse. 【Features】 - Environmentally friendly: No use of any substances listed in the RoHS Directive, compliant with REACH regulations - Thin film, high corrosion resistance - Damage resistance: Improved corrosion resistance due to the edge coverage of electro-galvanized coating - Low-temperature processing: Can be processed at temperatures below 200°C - Five color variations *For more details, please download the PDF or feel free to contact us.

"Drall" is a zinc-rich paint that can be applied in a single coat at room temperature. By flaking the main components, zinc and aluminum, it achieves high rust resistance with a thin film (30μm) in a single coat. This improves work efficiency and enables versatility. Being a one-component type, there are no restrictions on usable time, and there is minimal sedimentation of metal components, making the stirring process at the start of work easy. Additionally, the low viscosity of the paint ensures good applicability. With a usage amount of 200-250g/m² for a single coat, it contributes to reduced painting costs and shorter work times. 【Features】 ■ Excellent corrosion resistance due to the electrochemical properties of metals (sacrificial corrosion protection of zinc) ■ The inclusion of aluminum triggers a chemical reaction that forms a passive film, suppressing the oxidation of zinc ■ Fast-drying at room temperature, becoming touch-dry in about an hour ■ Completely chrome-free ■ Compliant with RoHS *For more details, please download the PDF or feel free to contact us.

"DISGO LUNA" is a high corrosion-resistant surface treatment technology that connects molten zinc plating and anti-corrosion paint film with a special chemical film. It maintains the aesthetic of the product over the long term and also improves gas resistance. The high-performance anti-corrosion paint film suppresses the intrusion of external corrosion factors while effectively controlling the sacrificial corrosion effect of the molten zinc plating film. To ensure a strong adhesion between the films, a special chemical film was used. Compared to standard molten zinc plating, the LUNA treatment significantly contributes to corrosion resistance and aesthetic maintenance, possessing performance equal to or greater than HDZ55. 【Features】 ■ High corrosion resistance: Synergistic effect of the anti-corrosion ability of the composite film of metallic zinc layer and high corrosion-resistant coating. ■ Improved gas resistance: Further enhancement of the inherent chemical resistance and sulfur gas resistance of molten zinc plating. ■ Weather resistance (discoloration prevention): Effective in maintaining aesthetics over a long period. ■ Damage resistance: Maintains corrosion resistance through edge coverage and thick film. ■ Reduces electrolysis. *For more details, please download the PDF or feel free to contact us.

"DISGO RINTAS" is a rust prevention treatment technology that excels in edge coverage, utilizing a high-hardness metallic zinc layer and the specialized DISGO processing technique developed over many years by Nippon Rust Part Co., Ltd. It connects a high corrosion resistance with excellent workability through a special chemical film. It does not use any substances listed in the RoHS Directive, including hexavalent chromium, trivalent chromium, lead, cadmium, or mercury. It also complies with REACH regulations. Due to the uniform thin film without paint accumulation on the bit and screw sections, the driving and tightening torque is stable. 【Features】 ■ No paint accumulation ■ Environmentally friendly ■ Thin film and high corrosion resistance ■ Tough film structure ■ Low-temperature processing ■ Reduced electrolysis *For more details, please download the PDF or feel free to contact us.

"RUSPERT ZERO・STAIN" is a revolutionary surface treatment technology that enhances the corrosion resistance of zinc-nickel alloy plating, designed as a complete chrome-free specification without chromate treatment, serving as an alternative to stainless steel. By forming a thin baked film on a uniform zinc-nickel alloy plating layer, the fitting of fastening components such as bolts and nuts becomes smoother, eliminating the need for over-tapping. The robust baked film exhibits high corrosion resistance. By applying two thin layers, stable shielding effects and high corrosion protection can be achieved. 【Features】 ■ Environmentally friendly ■ High corrosion resistance ■ Lubricity ■ Fit ■ Appearance *For more details, please download the PDF or feel free to contact us.

The RUSPERT treatment significantly enhances the corrosion resistance of traditional electroplating and hot-dip galvanizing. It allows for colorization, making it possible to match the landscape. Since it is a composite coating treatment with plating, it can adapt to various environments. Additionally, because the treatment temperature is below 200°C, it does not affect the physical properties of the product, and it greatly reduces galvanic corrosion (corrosion due to contact between dissimilar metals) on aluminum materials and highly corrosion-resistant plated sheets. 【Features】 ■ Corrosion resistance ■ Corrosion resistance of damaged areas ■ Color variations ■ Low-temperature treatment ■ Reduction of galvanic corrosion *For more details, please download the PDF or feel free to contact us.