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  6. The craftsmanship shines! The ultimate product "Flexible Busbar."

The craftsmanship shines! The ultimate product "Flexible Busbar."

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ishigaki-Cu-Busbar

last updated:Sep 28, 2026

石垣商店
石垣商店
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Flexible busbar: The ultimate product made possible by processing 150 tons of copper annually.

This product is a "flexible busbar," a conductive component capable of controlling large currents at the substation level. It is made by stacking 0.2 mm copper coil material, drilling bolt holes, and bending it to absorb vibrations. In addition to the shape shown in the photo, there are also flexible busbars for bow-type spot welders. It is referred to by various names such as flexible busbar, secondary copper strip, flexible copper strip, and copper plate, but its applications are almost the same. It is used as a final cushioning component for vibration absorption and thermal expansion. Since it is made by stacking multiple layers of C1100 copper coil material, it has excellent conductivity; however, drilling and bending require skilled techniques, and there are few companies capable of processing it. Additionally, we have a wide range of processing achievements for copper busbar products with thicknesses from 3 mm to 20 mm for transformer manufacturers and panel manufacturers in the Tokai region, processing as much as 150 tons of copper annually as a specialized copper processing company. We have a consistent production system from order to processing, plating, and delivery/shipping, allowing us to respond quickly with drawings and order forms! Hand-drawn diagrams are acceptable! We can handle orders starting from just one piece! Urgent requests are welcome!

    transformer
id="product-main-img"

The craftsmanship shines! The ultimate product "Flexible Busbar."

  • A specialized site for copper busbars operated by a copper processing company that handles 150 tons annually.
  • Special site - Product/service details - https://pr.mono.ipros.com/ishigaki-st/product/

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basic information

【Specifications】 Material: C1100-1/2H (Tough Pitch Copper) Supported Thickness: 3mm to 20mm Maximum Width: 150mm (200mm processing available for 10mm, 12mm, and 15mm) Maximum Length: 2000mm, negotiable Processing Details: Press punching, press bending, machining, lathe processing Surface Treatment: Tin plating, silver plating, nickel plating available Order Quantity: Welcomed from 1 piece! Delivery Time: Approximately 1 week to

Price range

P2

Delivery Time

P4

Applications/Examples of results

Delivery achievements - Oil-filled transformers - Molded transformers - Cubicles - Distribution boards and control panels - Electrical components for machine tools such as spot welding machines and plating equipment

catalog(6)

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[Information] About the corrosion of tin plating

[Information] About the corrosion of tin plating

TECHNICAL
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The Importance of Bolt Fixing in Copper Busbar Processing

The Importance of Bolt Fixing in Copper Busbar Processing

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[Comparative Explanation] Differentiating Between Flexible Conductors and Copper Busbars - Thermal Expansion and Vibration Absorption

[Comparative Explanation] Differentiating Between Flexible Conductors and Copper Busbars - Thermal Expansion and Vibration Absorption

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Introduction to the Concept of Thickness and Number of Layers in the Laminated Structure of Flexible Busbars

Introduction to the Concept of Thickness and Number of Layers in the Laminated Structure of Flexible Busbars

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How to Use Flexible Busbars in Transformers - Basics of Designing for Thermal Expansion and Vibration Relief

How to Use Flexible Busbars in Transformers - Basics of Designing for Thermal Expansion and Vibration Relief

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What is an ounce copper plate? How to convert the thickness notation of copper foil (oz) to mm and μm.

What is an ounce copper plate? How to convert the thickness notation of copper foil (oz) to mm and μm.

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News about this product(1)

The participation in the JECAFAIR 2026 Electrical Industry Exhibition has been confirmed.

  • Company news

We have decided to exhibit at "JECAFAIR 2026 Electric Construction Industry Exhibition," which will be held at Tokyo Big Sight from May 27 (Wednesday) to May 29 (Friday). We will be exhibiting right at the entrance of booth number 1-54 in Hall 1 East. On the final day, our on-site workers, who process 150 tons of copper busbars annually, will share insights about the characteristics of copper, the challenges of processing, and information that only those on-site would know during the exhibitor seminar! For more details, please visit the official website! We sincerely look forward to your visit!

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Company information

石垣商店

石垣商店

Industrial Electrical Equipment

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We have been providing copper components to transformer and control panel manufacturers, delivering energy through copper and ensuring safety and security for society. As a result of walking alongside our customers throughout this process, we have become a "copper specialty processing company"! When our customers are truly in need, we respond as quickly as the same day, embodying the spirit of mutual support! ■ Overwhelming inventory ■ Craftsmanship that allows for the fastest processing and youthful, energetic power ■ Strong network with local plating partner companies We can perform various processing methods such as machining, pressing, welding, and brazing. Since we have established a production system for a wide variety of small quantities, ■ Small lots ■ Various sizes ■ Complex shapes can also be handled quickly. We aim to be a company that delivers energy to everyone through copper, and we look forward to your continued support.

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