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Brochure "What is Forging Technology?" 【*Free Gift Available!】

Introducing the know-how of forged products essential for the development of infrastructure such as railways, civil engineering, shipbuilding, and construction! Get a free booklet now!

As a leading company in the rail fastening component manufacturing industry, we have been dedicated to the development of unique automation equipment and the improvement of technology, allowing us to produce better products at lower costs. We would like to introduce the forging technology of Teikoku Seibou. With our expertise in forging technology, we assist companies in various industries, including JR companies, municipal transportation bureaus, and private railways, in bringing their products to market. *For more details, please download the catalog. *For urgent matters or technical inquiries, please contact us directly through our website.

  • fastener
  • nut

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

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Railway-related products: fastening bolts and switch bolts.

Numerous shock bolts and various shaped bolts related to signals and electricity.

The bolts for railway switches (points) are manufactured using a hot forging system. A variety of chock bolts and various shaped bolts related to signals and electrical components are produced using the hot forging system. We manufacture different types of screws, including metric screws and Whitworth screws (inch-based), according to customer requests. Based on our outstanding technical capabilities, we also produce a wide range of items. *For urgent or emergency cases, or for technical inquiries, please contact us directly through our website.

  • bolt

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

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Railway-related products: resin-coated bolts for electrical contact and anti-corrosion.

Bolts treated with coatings such as nylon-based and epoxy-based.

Electrolytic corrosion is a phenomenon where metal rapidly dissolves due to the flow of electricity from natural phenomena on the surface of the metal. Iron structures are painted, and these paints contain a lot of zinc, which provides rust prevention effects. However, there are many areas of corrosion on bolts that have been hot-dip galvanized and are subjected to repeated wetting and drying, or are located in humid environments. To help address these issues, we also sell bolts that have been treated with coatings such as nylon-based and epoxy-based. *For urgent or emergency cases, or for technical inquiries, please contact us directly through our website.*

  • bolt

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

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Construction-related products high-strength hex bolts

High-strength hex bolts, which are active in steel frame and bridge construction, are also one of our main products.

High-strength hex bolts (M12 to M30), which are actively used in steel frame and bridge construction, are one of our main products. High-strength hex bolts play an important role as components for construction machinery, supporting the future of the construction industry. We use special steel materials for high-strength hex bolts, such as low-carbon manganese, chromium, and boron steel, ensuring stable mechanical properties of the products. Our consistent production process, utilizing advanced bolt forming equipment (for diameters of 27mm or less), guarantees stable quality. Leveraging years of experience in hot forging technology, we also manufacture large-diameter high-strength hex bolts (M33 to M76). We mass-produce products with stable quality through strict lot management based on JIS B1186. We maintain a rich inventory of standard products and respond quickly to orders. *For urgent or emergency inquiries, or technical questions, please contact us directly through our website.

  • bolt

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

無料会員登録

Construction-related products: stainless steel high-strength hex bolts

It has excellent design, corrosion resistance, and durability, and is widely used in various fields.

Stainless steel is excellent in design, corrosion resistance, and durability, and has been widely used in various fields for a long time. High-strength hex bolts used for stainless steel structural materials are regulated by JIS B1186 "Set of High-Strength Hex Bolts, Hex Nuts, and Flat Washers for Friction Joints." However, since the chemical composition and manufacturing methods of the material are not specified here, high-strength hex bolts made of stainless steel are manufactured based on the standards of the Stainless Steel Structural Engineering Association, SSBS301 "Set of High-Strength Hex Bolts, Hex Nuts, and Flat Washers for Structural Stainless Steel" (10T-SUS, 10-SUS, 35-SUS). *For urgent or emergency cases, or for technical inquiries, please contact us directly through our website.

  • bolt

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

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Construction-related products TM truss bolts (TM bolt)

High quality, high strength, and corrosion-resistant treatment is available for bolts of various sizes.

TM truss bolts are used in the spherical joint sections of the TM spatial truss (by Taiyo Kogyo Co., Ltd.), which creates an ideal space without columns. TM bolts are made from chromium-molybdenum steel (SCM435) and nickel-chromium-molybdenum steel (SNCM439), heat-treated to achieve high strength using advanced heat treatment equipment. Additionally, they undergo special corrosion-resistant treatment to prevent delayed fracture. Teikoku Seibou Co., Ltd. can provide high-quality, high-strength, and corrosion-resistant treatment for bolts of various sizes (with a maximum neck length of 1,000 mm). *For urgent or emergency inquiries, or technical questions, please contact us directly through our website.

  • bolt

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

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Large machinery, civil engineering, and ship-related products hex bolts (4.6 to 12.9)

We can manufacture bolts of all sizes according to user needs.

There are two types of hexagon head bolts based on the size of the width across the flats: 1. Standard hexagon bolts (regular hexagon bolts), and 2. Small hexagon bolts (hexagon bolts with a head width across the flats smaller than that of standard ones). The applicable strength grades are 4.6, 8.8, and 10.9. Teikoku Seiko Co., Ltd. can manufacture bolts of all sizes according to user needs. Additionally, since October 1993, Teikoku Seiko Co., Ltd. has been producing high-strength hexagon bolts with a diameter of 10.9 (JIS standard) using advanced heat treatment technology that leverages hot forging technology (with a maximum shank length of 1,000 mm possible). *For urgent or emergency inquiries, or for technical questions, please contact us directly through our website.

  • bolt

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

無料会員登録

Large machinery, civil engineering, and ship-related products - stainless steel bolts.

It is manufactured under strict quality control with extensive experience in all processes.

The stainless steel bolts manufactured by Teikoku Seibou Co., Ltd. are produced based on years of accumulated technology and achievements. All products are made to order. The manufacturing process includes hot forging, solution treatment, NC cutting, thread rolling, and surface treatment, all carried out under strict quality control and with extensive experience in each process. The range of thread rolling is wide, accommodating small to large diameters, meeting all kinds of needs (with a maximum neck length of up to 1,000mm). *For urgent or emergency inquiries, or technical questions, please contact us directly through our website.

  • bolt

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

無料会員登録

Large machinery, civil engineering, and ship-related products; special items, irregular items, and wit screws.

With reliable technology and a trustworthy system, we have carefully worked on each and every one.

Teikoku Seibou Co., Ltd. has been dedicated to each and every task with reliable technology and a trustworthy system. Furthermore, in order to respond to the "next needs," we have established a system that leverages the characteristics of the hot and cold forging technologies we have cultivated up to today, enabling us to accommodate all types of orders. Whether it’s standard bolts or special shapes and irregular bolts, please feel free to reach out with any inquiries or requests for quotes, regardless of the quantity, including questions like "Can you make something like this?" or "Can it be produced more economically?" *For urgent or emergency matters, or technical inquiries, please contact us directly through our website.

  • bolt

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

無料会員登録

Hex bolts for large machinery (4.6, 8.8, 10.9)

High-strength tempering with advanced heat treatment equipment! Hex bolts for large machinery.

The "Large Machine Hex Bolt" from Teikoku Seibou is a hex bolt made from chromium-molybdenum steel (SCM435, 440) and nickel-chromium-molybdenum steel (SNCM439). 【Features】 ◆ The high strength is achieved through advanced heat treatment equipment, ensuring stable quality. ◆ When combined with nuts, it allows for stable torque management during tightening. ◆ The hex head bolts are available in two types based on the width of the two flat sides: - Standard hex bolt (regular hex bolt) - Small hex bolt (hex bolt with a head width smaller than that of the standard hex bolt) - Applicable strength classifications are 4.6, 8.8, 10.9. *For urgent or emergency inquiries, or technical questions, please contact us through our website.

  • nut

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

無料会員登録

Product Catalog: Hot-Dip Galvanized High Strength Bolts (F8T)

High-strength bolts that are active in construction such as steel frames and bridges.

"Hot-dip galvanized high-strength bolts" are bolts used for construction machinery. High-strength hex bolts (M12 to M30), which are active in steel frame and bridge construction, are also one of the main products. The use of special steel materials for high-strength hex bolts, such as low-carbon manganese, chromium, and boron steel, ensures stable mechanical properties of the products. We have a rich inventory of standard products and will respond quickly to your orders. 【Features】 ○ Utilizing state-of-the-art equipment for bolt forming (φ27mm or less) for consistent production, ensuring stable quality. ○ Leveraging years of experience in hot forging technology, we also manufacture large-diameter high-strength hex bolts (M33 to M76). ○ Mass production of products with stable quality through strict lot management (based on JIS B1186). *For urgent or emergency inquiries, please contact us through our website for technical questions.

  • bolt

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

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Stainless steel hex bolt

It is manufactured under strict quality control with extensive experience in all processes.

Stainless steel bolts are manufactured based on years of our accumulated technology and achievements. Additionally, there are processes such as hot forging, solution treatment, NC cutting, thread rolling, and surface treatment, all of which are carried out under strict quality control and with extensive experience. The range of rollable diameters is wide, from small to large, catering to all kinds of needs. *For urgent or emergency inquiries, please contact us through our website for technical questions.

  • nut

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

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Hexagon socket bolt (cap)

Improved reliability and workability by preventing loosening with high tightening force.

Hexagon socket bolts (caps) are generally used without being paired with nuts, so referring to them as screws is more accurate. However, since the name hexagon socket bolt has become widespread, they are also referred to as cap bolts. The applicable strength grades are 10.9 and 12.9. They are tightened with a hexagonal rod wrench (with a maximum length of 1,000 mm possible). *For urgent or emergency situations, or for technical inquiries, please contact us directly through our website.

  • nut

ブックマークに追加いたしました

ブックマーク一覧

ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

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Large machinery-related bolt "Stainless steel high-strength hex bolt"

Customization for special dimensions and shapes is also possible! High-quality stainless steel high-strength hex bolts!

The "stainless steel high-strength hex bolt" is a material that excels in design, corrosion resistance, and durability, and has been widely used in various fields for a long time. Customization to special shapes with unique dimensions in length and thickness, as well as changes to the shape of the head, is possible. ◎ Various stainless steel bolts can also be manufactured according to your requests. 【Features】 ■ Manufactured under strict quality control with abundant experience in all processes ■ Customization to special dimensions and shapes is possible ■ The range for rolling is wide, from small diameters to large diameters (maximum underhead length of 1,000mm is possible) *For urgent or emergency inquiries, or technical questions, please contact us directly through our website.

  • bolt

ブックマークに追加いたしました

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これ以上ブックマークできません

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Product Catalog: Trapezoidal Screw Bolt for PC Sleepers

Excellent strength! Customizable screw bolts available.

The "PC sleeper trapezoidal screw bolt" is a bolt that fastens the rail to a sleeper embedded with a synthetic resin plug that serves as the female thread, using a spring. Our company manufactures the threaded part of the bolt using a hot rolling method. As a result, unlike cutting methods, the fiber structure of the steel material is maintained without being severed. It has been adopted in many new shinkansen lines, including the Sanyo Shinkansen. 【Features of the hot rolling method】 - Excellent strength due to the intact fiber structure - High precision with no eccentricity - Suitable for mass production - Custom products for various shapes and trapezoidal threads are also available - Thread processing for special steel and stainless steel is possible *For urgent or emergency inquiries, please contact us through our website for technical questions.

  • bolt

ブックマークに追加いたしました

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ブックマークを削除いたしました

ブックマーク一覧

これ以上ブックマークできません

会員登録すると、ブックマークできる件数が増えて、ラベルをつけて整理することもできます

無料会員登録