三協製作所 List of Products and Services

Sankyo Seisakusho Co., Ltd. conducts analysis/design, molding, and assembly of products made from materials such as plastics, glass fiber reinforced composites (GFRP), carbon fiber reinforced composites (CFRP), and difficult-to-machine materials like non-ferrous metal ceramics. Utilizing processing technologies developed over 40 years, we strive to provide prompt and suitable solutions to meet the diverse needs and requests of our customers, ranging from functional components that support daily life to advanced high-performance structures. 【Business Activities】 ■ Design, molding, processing, and assembly of various plastics ■ Design, molding, processing, and assembly of various composites ■ Grinding and cutting of various new materials ■ Design and manufacturing of automatic machines and conveyors *For more details, please refer to the PDF document or feel free to contact us.

• Facility Design
• others

Fiber-reinforced composites, unlike other structural materials (often homogeneous materials), exhibit their characteristics in the direction of the fiber orientation. Consequently, the design philosophy naturally changes, and the concept of homogeneous materials often cannot be applied. The "FRP Q&A Collection" includes representative questions and answers that have arisen in the context of processing and manufacturing contracts using fiber-reinforced composites. [Contents] ■1. About terminology ■2. About costs/manufacturing period ■3. About manufacturing ■4. About material properties ■5. About the environment *For details, please request the materials or view the PDF data from the download.

• Structural Materials
• others

CFRP (Carbon Fiber Reinforced Plastic) is said to be a lightweight, strong, and corrosion-resistant advanced functional material. It possesses excellent mechanical properties and outstanding characteristics derived from its carbon content, making it widely used. Additionally, we have introduced large-scale equipment capable of processing long items measuring "7m in length and 1m in diameter." ★ We are currently offering a 'CFRP and Various Materials Property Comparison Table' that is useful during the design phase ★ This includes explanations of the excellent features and properties of CFRP, as well as comparison materials with GFRP, AFRP, aluminum alloys, and other various materials. 【Included Materials (Partial Excerpt)】 ■ Overview of CFRP (Carbon Fiber Reinforced Plastics) ■ Classification and Characteristics of Carbon Fibers ■ High Vibration Damping CFRP Robot Hand * The materials can be viewed by clicking the "PDF Download" button below. * For inquiries such as quotes, please feel free to consult us through the "Contact Us" section.

• Steel
• Steel construction
• Structural Materials

At Sankyo Seisakusho, which consistently handles everything from design, molding, processing, to assembly of composite materials including CFRP (FRP) and general-purpose plastics, we are currently offering a free technical booklet titled "Basic Knowledge of FRP 4," which condenses our molding know-how! The booklet includes explanations on the comparison of FRP characteristics, as well as data on representative reinforcing fibers and chemical resistance properties used in FRP. It is easy to understand for beginners and can also be used as training material! 【Contents】 ■ Comparison of various material characteristics ■ Representative reinforcing fibers used in FRP ■ Representative matrices used in FRP ■ Chemical resistance properties ■ Outgassing *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

• Steel
• Steel construction
• others

At Sankyo Seisakusho, which consistently handles everything from design, molding, processing, to assembly of composite materials including CFRP (FRP) and general-purpose plastics, we are currently offering a free technical booklet titled "Basic Knowledge of FRP 1," which condenses our molding know-how! The booklet includes explanations about the classification of FRP, approaches to FRP design, and representative molding methods. It is easy to understand for beginners and can also be used as training material! 【Contents】 ■ Classification of FRP (Reinforcing Fiber) (Matrix) ■ Representative Reinforcing Fibers ■ Differences between FRP and Conventional Materials ■ Approaches to FRP Design ■ Representative Molding Methods for FRP *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

• Steel
• Steel construction
• others

At Sankyo Seisakusho, which consistently handles everything from design, molding, processing, to assembly of composite materials such as CFRP (FRP) and general-purpose plastics, we are currently offering a free technical booklet titled "Basic Knowledge of CFRP 3," which condenses our molding know-how! The booklet includes explanations about FRP bonding, representative bonding methods, design of bonded joints, evaluation methods, types of adhesives, and surface treatments. It is easy to understand for beginners and can also be used as training material! 【Contents】 ■ Representative bonding methods (bolts and nuts, welding, adhesion, etc.) ■ Design of bonded joints (adhesion section) ■ Representative evaluation methods (tensile adhesive strength, tensile shear adhesive strength, etc.) ■ Types of adhesives, selection, and usage *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

• Steel
• Steel construction
• Rock drills, demolition machines, and excavators

At Sanko Seisakusho Co., Ltd., which consistently handles everything from design, molding, processing, to assembly of composite materials such as CFRP (FRP) and general-purpose plastics, we are currently offering a technical document titled "List of Molding Types for CFRP," which condenses our molding know-how, for free! We will provide a list of the structures of molds for molding round and square pipes, among others that we own. It is easy to understand for beginners and can also be used as training material! [Contents] ■ Structure of molds for molding round pipes ■ Molds for molding round pipes ■ Structure of molds for molding square pipes ■ Molds for molding square pipes *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

• Steel
• Steel construction
• others

Our company, which consistently handles everything from design, molding, processing, to assembly of composite materials such as CFRP (FRP) and general-purpose plastics, is currently offering a free technical booklet titled "Basic Knowledge of CFRP 2," which condenses our molding know-how! The booklet includes explanations of the advantages and disadvantages of various molding methods and their applications, as well as a "flowchart" that helps identify the optimal molding method for different needs. It is easy to understand for beginners and can also be used as training material! 【Contents】 ■ Representative examples of wet molding (hand lay-up method, RTM method, etc.) ■ Representative examples of dry molding (SMC method, autoclave method, etc.) ■ Advantages, disadvantages, and specific examples of various manufacturing methods ■ Selection criteria for molding methods (flowchart) *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

• Steel
• Steel construction
• others

【Overview】 We offer processing into various shapes according to customer specifications. In particular, for round and square pipes commonly used as structural materials such as trusses, we have a wide variety of molds available for shaping and respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ● GFRP Radar Dome We manufacture sandwich structure radomes with good radio wave transmission characteristics from L to Ka band, using GFRP/honeycomb core or foam core structures. We can accommodate sizes up to φ9m. ★ For more details, please request materials or download the documents ★

• Steel

【Overview】 We offer processing into various shapes according to customer specifications. In particular, for round and square pipes commonly used as structural materials such as trusses, we have a wide variety of molds for shaping and respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ● Honeycomb Tube Utilizing the low thermal expansion and lightweight properties of CFRP, we use it for core materials with minimal dimensional changes in sandwich structures and for rectifiers. ★ For more details, please request materials or download the documents ★

• Steel

【Overview】 We offer processing into various shapes according to customer specifications. In particular, for round and square pipes commonly used as structural materials such as trusses, we have a wide variety of molds available for shaping, and we respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ●Speaker A product that applies the structural theory of a radar dome, which does not degrade the characteristics of the radio waves emitted from the radar. ★For more details, please request materials or download the documents★

• Secondary steel products

【Overview】 We accept processing into various shapes according to customer specifications. In particular, for round and square pipes commonly used as structural materials such as trusses, we have a wide variety of molds available for shaping and respond quickly to orders. Additionally, shaping into polygons such as triangles and hexagons, as well as elliptical shapes, is also possible. ● List of molds for square and round pipes The wall thickness of the products can be set arbitrarily from 0.5mm. *For more details, please visit our website. ★For more information, please request materials or download the documents★

• Steel

【Overview】 We accept processing into various shapes according to customer specifications. In particular, for round and square pipes, which are often used as structural materials such as trusses, we have a wide variety of molds available for shaping and respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ● X-ray Transparent Medical Bed An X-ray transparent medical bed that utilizes one of the features of CFRP, its X-ray permeability and high rigidity. It has a sandwich structure with a foam material used as the core. ★ For more details, please request materials or download the documents ★

• Steel

Moldable Shapes of CFRP [Overview] We process various shapes according to customer specifications. In particular, for round and square pipes commonly used as structural materials such as trusses, we have a wide variety of molds available and respond quickly to orders. We can also mold into polygons such as triangles and hexagons, as well as elliptical shapes. ● Honeycomb Sandwich Panels We manufacture lightweight and high-rigidity honeycomb sandwich panel structural products used in aircraft structures and artificial satellite structures. ★ For more details, please request materials or download the documents. ★

• Steel

**Overview** We accept processing into various shapes according to customer specifications. In particular, for round and square pipes, which are often used as structural materials such as trusses, we have a wide variety of molds available for shaping and respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ● Long CFRP Roller Tube * Longitudinal elastic modulus: up to 350 GPa * Tube outer diameter finished with cylindrical grinding to a precision of Φ±0.05mm * Maximum outer diameter Φ350, length 3.5m (longer lengths can be joined) ★ For more details, please request documentation or download the materials ★

• Steel

【Overview】 We accept processing into various shapes according to customer specifications. In particular, for round and square pipes commonly used as structural materials such as trusses, we have a wide variety of molds available for shaping and respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ● Long Square Tube Beams We can manufacture long square tube beams made of CFRP with high rigidity (maximum elastic modulus in the length direction: 350 GPa), which is increasingly in demand for industrial equipment, with lengths of up to 6 meters. ★ For more details, please request materials or download the documents ★

• Steel

【Overview】 We offer processing into various shapes according to customer specifications. In particular, for round and square pipes, which are often used as structural materials such as trusses, we have a wide variety of molds available and respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ● Irregular Cross-section Tubes Using our unique internal and external molding method, we can create CFRP tubes with flexible cross-sectional shapes, as shown in the photo. ★ For more details, please request materials or download them. ★

• Steel

●This is glass fiber reinforced plastic, a representative material of FRP. It is usually formed by layering on a core called a mandrel, but in order to reduce initial costs, it is formed by bending sheet metal and utilizing its inner surface. ●This is an 860mm diameter, 1800mm height, and 12mm thick GFRP pipe. A groove 1.5mm wide and 1.5mm deep is spirally carved into the outer layer, and metal wire is wound into it. In other words, it serves as a coil winding frame. ★For more details, please request materials or download the documents★

• Steel

【Features】 ● The surface has metallic properties (surface modification) ● Lightweight and high rigidity high-rigidity CFRP/metal composite pipe 【Main composite pipe shapes available】 (1) Standard products can be made with dimensions and shapes of surface materials available in the market from "ferrous and non-ferrous" materials. (2) For special shapes, we can accommodate requests through homing, so please consult us separately. (3) Can be produced up to 5 meters. ★ For more details, please contact us ★

• Steel

CFRP (Carbon Fiber Reinforced Plastic) is said to be a lightweight, strong, and corrosion-resistant advanced functional material. Due to its excellent mechanical properties and outstanding characteristics derived from carbon, it is widely used. This document not only explains the excellent features and properties of CFRP but also includes comparative materials with various materials such as GFRP, AFRP, and aluminum alloys. Please make use of this information for your material selection! [Featured Materials (Partial Excerpt)] ■ FRP Advanced Composite Materials ■ High-Performance Metals ■ Performance Engineering Plastics ■ Inorganic Materials *For more details, please download the catalog or contact us.

• Steel

CFRP refers to... It is the most notable material among advanced composite materials (ACM). It is manufactured by molding and processing carbon fibers with matrix resins such as epoxy and polyimide, and it is also a material designed according to the type, orientation, and combination of carbon fibers to meet specific applications and required characteristics. Its features leverage anisotropy and heterogeneity to provide advantages such as: ■ Lightweight (about 1/5 of steel) ■ High rigidity (about twice that of steel) ■ High strength (equal to or greater than steel) ■ High thermal conductivity (1/2 to 1/3 of steel) ■ Low thermal expansion (1/10 of steel) ■ Conductivity ■ X-ray permeability Since the emergence of CFRP, our company has focused on it, conducting extensive research on design and processing, and we take pride in being at the top level in the industry regarding CFRP design and processing. ★ For more details, please request materials or download the documents.

• Steel

【Overview】 We accept processing into various shapes according to customer specifications. In particular, for round and square pipes commonly used as structural materials such as trusses, we have a wide variety of molds available for shaping and respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ● Optical Equipment Enclosures We utilize the low thermal expansion properties of CFRP to manufacture enclosures and structural products with minimal dimensional changes due to temperature. ★ For more details, please request documentation or download the materials. ★

• Steel

【Overview】 We accept processing into various shapes according to customer specifications. In particular, for round and square pipes, which are often used as structural materials such as trusses, we have a wide variety of molds for shaping and respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ●Special Shaped Molding Products We mold CFRP, GFRP, and other products with unique shapes featuring versatile opening surfaces, as shown in the photos, using our distinctive internal and external pressure molding method. ★For more details, please request materials or download the documents★

• Special function opening

【Overview】 We accept processing into various shapes according to customer specifications. In particular, for round and square pipes commonly used as structural materials such as trusses, we have a wide variety of molds available for shaping, and we respond quickly to orders. Additionally, we can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ● Long hollow square tubes for robot hands and forks We manufacture hollow tubes with various cross-sectional shapes that have a maximum elasticity of 350 GPa in the length direction, necessary for long robot hands and forks. 【The robot hand using a square tube assembly structure is our utility model】 ★ For more details, please request materials or download the documents ★

• Steel

CFRP, or carbon fiber reinforced plastic, is a lightweight, strong, and corrosion-resistant advanced functional material. At our company, we are committed to being the best partner for our customers' product development, engaging in total application development from processing to design and assembly. We not only focus on speedy and low-cost development but also continuously study cutting-edge materials to provide optimal solutions for our customers' development plans. 【Technology Introduction】 ◆ A lightweight and high-rigidity CFRP robotic hand that reduces amplitude decay time to "1/3" We have developed a structural product with high vibration damping characteristics in a CFRP angular tube structure hand, without compromising on lightweight and high rigidity. *Comparison results with our existing structural products are available in the downloadable materials.

• Steel

【Overview】 We offer processing into various shapes according to customer specifications. In particular, for round and square pipes, which are often used as structural materials such as trusses, we have a wide variety of molds available for shaping and respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ● Robot hands and forks for LCD manufacturing equipment We design and manufacture lightweight and high-rigidity robot hands and forks using CFRP hollow square tubes and solid structures. ★ For more details, please request materials or download the documents. ★

• Steel

●This is an example of CFRP applications. On our website, examples of applications tailored to the characteristics listed below are provided. Please take a look. ●Mechanical Properties - Lightweight, high rigidity, high strength - Vibration damping ●Thermal Properties - High thermal conductivity - Low thermal expansion ●Electrical Properties - Conductivity ●X-ray Properties - X-ray permeability ●Chemical Properties - Corrosion resistance, chemical resistance, weather resistance - Reactivity ●Others - Low outgassing - Good shape moldability ★For more details, please request materials or download the documents★

• Steel

【Overview】 We offer processing into various shapes according to customer specifications. In particular, for round and square pipes, which are often used as structural materials such as trusses, we have a wide variety of molds available for shaping, allowing us to respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ● Metal Composite Pipe (Patent Pending) We produce products designed for surface modification, such as chemical resistance, appearance, and electrical conductivity, by coating a metal layer over a CFRP outer layer to suit various applications. ★ For more details, please request materials or download the documents. ★

• Steel

**Main Composite Pipe Shapes Available** (1) Standard products can be made from commercially available "steel and non-ferrous" materials with dimensions and shapes of the surface components. (2) Special shapes can be accommodated through homing, so please consult us separately. (3) Production is possible up to 5 meters. **Overview** We process various shapes according to customer specifications. In particular, for round and square pipes commonly used as structural materials such as trusses, we have a wide variety of molds for shaping and respond quickly to orders. We can also shape into polygons such as triangles and hexagons, as well as elliptical shapes. ● Long CFRP Roller Tubes * Longitudinal elastic modulus: up to 350 GPa * Tube outer diameter is finished with cylindrical grinding to a precision of Φ±0.05mm * Maximum outer diameter Φ350, length 3.5m (longer lengths require joining) ★ For more details, please contact us ★

• Joints between components