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  6. We specialize in processing copper busbars ranging from 3mm to 20mm!

We specialize in processing copper busbars ranging from 3mm to 20mm!

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last updated:Feb 18, 2026

石垣商店
石垣商店
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Integrated production from material procurement to processing, plating, and delivery!

The delivery destinations for Ishigaki Shoten are transformer manufacturers and panel manufacturers. Among these, we excel at processing copper busbars ranging from 10mm to 20mm for controlling 550,000V at primary substations. We can handle material procurement, cutting, press hole drilling, press bending, machining for 12mm to 20mm, lathe processing of copper round bars, and plating (silver, tin, nickel), allowing for installation on the same day they arrive. Please note that there are processing limits for bending operations on 15mm and 20mm.

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DSCF5220.jpg

We specialize in processing copper busbars ranging from 3mm to 20mm!

DSCF5220.jpg
DSCF5220.jpg
  • Related Link - https://ishigaki-st.com/strong/process/
  • Special site - Product/service details - https://pr.mono.ipros.com/ishigaki-st/product/

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basic information

Originally, we transitioned from a materials wholesaler to a copper processing company, establishing a unique material procurement route since then, which reduces the risk of material shortages. This is one of Ishigaki Shoten's strengths. Additionally, as a processing company specialized in copper, we can secure inventory of copper busbars and do not need to add extra material or processing costs to the products ordered, so you can place your orders with confidence. As a company responsible for electrical infrastructure, we have obtained ISO certification and continue to maintain it, while also focusing on quality control and checks for both our company and partner companies to provide stable quality.

Price range

P2

Delivery Time

Please contact us for details

Applications/Examples of results

Copper busbars for transformers and various internal panels.

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Efforts for the Environment: 'SBT Certified Company'

Efforts for the Environment: 'SBT Certified Company'

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Four secrets to being chosen as a specialist in copper processing!

Four secrets to being chosen as a specialist in copper processing!

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70 years of trust and achievements as a specialized copper processing company!

70 years of trust and achievements as a specialized copper processing company!

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News about this product(1)

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

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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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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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