三和鉄工 List of Products and Services

"PC steel bars" are easy to secure due to the rolled thread processing at the ends. They are high-performance, high-quality tension materials suitable for various concrete-related construction methods, including those used by general contractors. By utilizing the technology of prestressed concrete (PC steel bars), we can overcome the weakness of concrete, which is "strong in compression but weak in tension." ★ In October 2018, obtained JIS certification for JIS G3109 B type No. 21Φ. ★ In May 2020, obtained certification for B type No. 1 and C type No. 1 in sizes from 15mm to 40mm. * Certification for deformed PC steel bars (D22, 25, 32, 36) B type No. 1 (May 2020). We have built a track record in various fields, from bridge-related projects to seismic reinforcement work and concrete secondary products. [Features] ■ Set delivery with anchoring components is possible. ■ In-house relaxation tests enhance our quality control system. ■ Sanwa unbonded PC steel bars are also available. For more details about the products, please refer to the PDF materials or feel free to contact us.

• bolt

★ーーーWe will exhibit at the 21st Mechanical Components Technology Exhibitionーーー★ Date: June 21 (Wednesday) - June 23 (Friday), 2017 Venue: Tokyo Big Sight, East Hall 3 Our Booth: 25-42 ★ーーーーーーーーーーーーーーーーーーーーーーー★ Sanwa's low fin tubes can be manufactured in fin shapes tailored to customer requirements, significantly improving thermal efficiency by increasing surface area. Additionally, we are the only company in Japan with processing technology for small diameters starting from Φ5, which enables the reduction of the number of heat transfer tubes and the miniaturization and lightweighting of heat exchangers. Our products have been used in various fields, including various heat exchangers and as components in biomass power generation equipment. 【Features】 ■ Low fin processing is possible for minimum diameters from φ5, tailored to material length ■ Manufactured in requested fin shapes, pitches, and various numbers of fins ■ Compatible with various materials (carbon steel, SUS, copper, aluminum, titanium) ■ Bending processing is also available (U-bending, hairpin bending, etc.) *For more details, please download the catalog from the link below or contact us.

• tube
• Heat exchanger
• others

We would like to introduce a case study where our low-fin tube has been implemented. We spoke with Masahiro Miyauchi, the president of ADMIEXCO Engine Design Co., Ltd., which focuses on small-scale distributed and onsite biomass power generation within the renewable energy sector, and is engaged in the design, development, and sales of Stirling engines. [Case Study] Company Name: ADMIEXCO Engine Design Co., Ltd. [Excerpt from the Content] We discussed with President Miyauchi the future direction of the Stirling engine business and the potential for expanding the market for low-fin tubes in the heat exchanger field. *For more details, please refer to the catalog or feel free to contact us.

• bolt
• nut

The "Bolt and Nut Handbook" is a catalog from Sanwa Iron Works Co., Ltd., which manufactures and sells bolts and nuts for piping and pressure vessels. It includes useful information for selecting bolts and nuts, such as types of bolts, shapes of nuts, and a list of standards. In situations like these... I want to know the standards of the screws currently in use! I want to find an equivalent product since I can't obtain the same one I'm currently using! I want to know about high-strength screws and nuts! You can find solutions in the "Handbook"! ★ We also offer a convenient business card-sized "Screw Handy Guide" as a gift. If you would like one, please contact us. (The content is almost the same as the handbook.) 【Contents (partial)】 ■ Types of bolts ■ Shapes of nuts ■ Stud bolt and nut weight calculation table ■ Bolt and nut hardness conversion table ■ Chemical composition standards list *For more details, please refer to the catalog or feel free to contact us.

• bolt
• nut

"Sancoat" is a fluororesin coating primarily designed for salt damage prevention, baking, galling prevention, and chemical resistance. By adding a new process to the conventional Sancoat products, the rust prevention capability has significantly improved. It prevents corrosion with a double barrier. While many other products undergo a salt spray test at pH 6.5, our company has passed tests in a harsh environment at pH 3.5 for 150 hours. The test results are proof of high quality. [Features] - Excellent rust prevention and double corrosion protection - Passed the salt spray test at pH 3.5 - Durability and stable fastening - Achieved short delivery times and low-cost provision *For more details, please refer to the catalog or feel free to contact us.

• Other surface treatment equipment

"Sunaltech" is a surface treatment that generates an aluminum + iron alloy layer primarily aimed at countering salt damage, preventing burning, and resisting high-temperature oxidation and corrosion. The re-surfaced layer is covered with an oxide film (Al2O3), which is scientifically stable, providing high corrosion resistance. Bolts treated with this process maintain the strength of the material and can sufficiently withstand increases in axial force due to tightening, allowing for safe use. 【Features】 ■ Excellent corrosion resistance (atmospheric and seawater) ■ Prevention of stress corrosion cracking (can also be applied to stainless steel) ■ Reduces bolting work during maintenance by half ■ High-temperature oxidation resistance by preventing oxygen penetration into the base material ■ Maintains high dimensional accuracy due to diffusion penetration ■ Weldable, resistant to sulfide, and prevents stress corrosion cracking *For more details, please refer to the catalog or feel free to contact us.

• Other surface treatment equipment

The "Rolling Nipple" is a pipe thread that has a strong connection strength with fittings and excels in earthquake resistance, pressure resistance, and durability. Traditionally, pipe threads used in piping fittings were mainly produced through cutting processes, but there were various performance issues due to the reduction of effective pipe thickness from cutting, as well as inconsistencies in thread precision and surface smoothness. Our product achieves a high-precision and smooth thread surface through rolling threads, improving the adhesion between male and female threads. It resolves the issues associated with cutting threads. 【Features】 ■ Earthquake resistance ■ Pressure resistance ■ Durability ■ Sealing performance *For more details, please refer to the catalog or feel free to contact us.

• Other machine elements
• Piping Materials

Our company handles a variety of products used in diverse fields, including stud bolts, bolts and nuts for piping and pressure vessels. These products are utilized in applications such as petrochemical plants, LNG plants, oil refining, nuclear power generation, shipbuilding, water treatment, natural gas, heat exchangers, environmental equipment, thermal power generation, and many more, and are recognized as a trusted brand not only in Japan but also overseas. 【Main Applications】 ■ Petrochemical Plants ■ LNG Plants ■ Oil Refining ■ Nuclear Power Generation ■ Shipbuilding ■ Water Treatment ■ Natural Gas ■ Heat Exchangers ■ Environmental Equipment ■ Thermal Power Generation *For more details, please refer to the external link page. Feel free to contact us as well.

• bolt
• nut
• Piping Materials

The "Low Fin Tube" can be manufactured in fin shapes according to customer requests, significantly improving thermal efficiency by increasing the surface area. Additionally, we have processing technology for small diameters starting from φ5, which allows for a reduction in the number of heat transfer tubes and enables the miniaturization and lightweighting of heat exchangers. So far, it has been used in various fields of heat exchangers, including as parts of biomass power generation equipment. 【Features】 ■ Bending processing is also available (U-bending, hairpin bending, etc.) ■ Compatible with various materials (carbon steel, SUS, copper, aluminum, titanium) ■ Can be manufactured in desired fin shapes, pitches, and various numbers of rows ■ Low fin processing is possible for minimum diameters starting from φ5, tailored to material lengths *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

• Other electronic parts

What is a rolled thread screw? It is a screw formed by applying strong pressure while rotating a rod-shaped material. We develop products that meet our customers' needs, from general-purpose screws to special screws. ★ You can view our technology in the video below. Please take a look! *For more details, please download the catalog from below or contact us.*

• tube
• Heat exchanger
• others

The Sanwa low-fin tube can be manufactured in fin shapes tailored to customer requests, significantly improving thermal efficiency by increasing surface area. Additionally, it is the only technology in Japan capable of processing small diameters starting from Φ5, which allows for a reduction in the number of heat transfer tubes and enables the miniaturization and lightweighting of heat exchangers. So far, it has been used in various fields, including different types of heat exchangers and as components in biomass power generation devices. 【Features】 ■ Low-fin processing is possible with a minimum diameter of φ5, tailored to material length ■ Manufactured in requested fin shapes, pitches, and various numbers of fins ■ Compatible with a variety of materials (carbon steel, SUS, copper, aluminum, titanium) ■ Bending processing is also available (U-bending, hairpin bending, etc.) *For more details, please download the catalog from the link below or contact us.

• tube
• Heat exchanger
• others

The bolts and nuts are manufactured and sold not only based on the distinction between iron and stainless steel but also according to specifications regarding material, strength, and plating. Since they are made to order, there is flexibility in the shape of the bolt body and insulation parts. The bolts and nuts can comply with not only JIS standards but also ASTM and ANSI/ASME, and various test certificates can be issued.

• bolt

The High Strength 100 Series is a high-strength stainless steel bolt that takes advantage of the main components of stainless steel, such as Ni, Cr, and Mo, while enhancing the cold work rate in our own factory. It excels in high-temperature resistance, corrosion resistance, and low-temperature impact resistance. As fastening components for equipment used in ultra-low temperature high pressure and high temperature high pressure applications, stud bolts, embedded bolts, and chemical anchors can be utilized. 【Features】 - Custom-made manufacturing possible due to in-house production - High strength with a tensile strength of 1,000 N/mm² - High strength even at elevated temperatures - Absorbs low-temperature impact energy despite high strength - Longer lifespan compared to iron, reducing the hassle of replacements For more details, please contact us or download the catalog.

• bolt
• nut