COMPANIES

COMPANIES

ISHIGAKI SHOUTEN Inc.

Contributing to a Decarbonized Society: Efforts by a Small Specialist Factory Active for Over 70 Years

ISHIGAKI SHOUTEN Inc. has been providing high-quality copper components to the electric power equipment industry, including transformer and control panel manufacturers, as a copper processing specialist since we were established in 1948.
Our technological capabilities stem from our many years of dealing with copper, while we have problem-solving skills thanks to our integrated production system and multi-skilled employees. We aspire to fulfill a diverse array of customer requirements as a comprehensive one-stop solution, while also playing a vital role in advancing a low-carbon energy infrastructure through leveraging the exceptional energy transmission properties of copper to their fullest extent.


Copper and other nonferrous metal processing Copper has high thermal and electrical conductivity and is energy efficient. We handle a variety of copper materials, from a single prototype to mass production of several thousand pieces. We can process plates from 0.2 mm to 30 mm in thickness and up to 3,000 mm in length, and round workpieces from 6 mm to 120 mm in diameter and up to 1,500 mm in total length.

Characteristics of copper processing SHIGAKI SHOUTEN Inc. has been processing nonferrous metals like copper, brass, and aluminum for around 70 years. We can complete a wide range of processing in-house, which includes not only cutting and lathing, but also bending, pressing, and thread rolling. Our copper processing boasts advanced characteristics.

Bend and press processing
Bend processing is possible from thin sheets of t=1.0 mm to thick sheets of t=25 mm. Special kinds of processing includes edgewise bending and processing of 3,000 mm long items. In addition to dimensional accuracy, we can also provide a high-quality finish for parts in cases where there must be no burrs or flaws in the finished product.

Cutting and lathe processing
We have a variety of equipment including NC lathes, compound lathes, and vertical machining centers, and can handle not only mass production, but also high-mix small-lot production, in addition to prototype manufacturing from a single item. We have experience in one-chucking processing of high-precision parts on a compound lathe and machining of small-sized square objects (10 x 10 mm).


Thread rolling
We utilize our own thread rolling machines to perform metric thread cutting and knurling. Based on the customer's needs, we select the best method of lathe turning or form rolling. Preparing various types of dies enables shorter delivery time improved productivity.


Why we can offer solutions Our strength lies in our ability to offer solutions like shorter delivery times and cost reductions. Because we have worked together with our customers as a company specializing in copper, brass, and aluminum processing, we can offer solutions through thoughtful efforts.

Integrated Production
We offer integrated production services from a single item. managing everything from material procurement to brazing, annealing, and a range of surface treatments. With our extensive in-house facilities and unique network, we excel in diverse processes such as plating and welding. Furthermore, we guarantee excellent quality through incoming and pre-shipment inspections, ensuring our valued customers receive only the best products.

Quick delivery
Our one-stop delivery from material procurement to delivery ensures quick turnaround times. With copper bars and round bars kept in stock, we can achieve quick delivery with a significant reduction in the lead time required to arrange materials in an emergency. We have a wide range of materials from general copper materials to materials with special characteristics, like beryllium copper. In cases where we have the materials at hand, our delivery record is as short as one day. Even for materials that are out of stock, we can quickly procure them using the network we built up when we were wholesalers, so we can then perform integrated production.

Efforts and third-party certifications Copper has high thermal conductivity and high electrical conductivity. We manufacture electric power and thermal energy components that make the best use of these characteristics. By doing so, we contribute to the realization of a carbon-neutral society and lend our support to companies that champion energy conservation and strive for low carbon emissions, particularly in the electric power equipment industry.
In 2022, we were certified as an "Aichi Biodiversity Company" in recognition of our efforts including local cleanups and conservation of rare plant species in wetlands through industry-academia collaboration. As of 2024, we are currently in the process of establishing a corporate structure to implement an environmental management system.

Production Examples

  • Processing Applicable Range (Lot, Size/Shape, Surface treatments)

    ・Lot: Orders from a single unit. We also have handled mass production of up to several thousand units.
    ・Plate processing: Thickness of 0.2-30 mm/Width up to 600 mm/Total length up to 3000 mm
    ・Round workpiece processing: 6 to 120 mm in diameter/Total length 1500 mm
    ・Surface treatment: Glossy or matte tin plating/Nickel plating/Silver plating/Others

  • Copper materials we handle

    ・We handle pure copper, brass, bronze, high copper alloys, copper-nickel alloys, etc.
    ・We also have experience in handling and processing special materials, etc.
    ・Examples of copper materials: C1100 (tough pitch copper)/C1020 (oxygen-free copper)/C1201/C1220 (phosphorous deoxidized copper)/C1221/Chromium Copper in general

  • Copper Bus Bar: Processed Sheet Metal

    Lot: 1 to 300 pieces
    Thickness: 3.0 to 40.0 mm
    Total Length: Max. 2,000 mm
    Material: Pure Copper (C1100/C1020)/Brass/Aluminum/Chromium Copper/Beryllium Copper

  • Copper Rod: Processed Components

    Lot: 1 to 3,000 pieces
    Thickness: Diameter 10 to 100 mm
    Total length: Max. 1,000 mm
    Material: Pure Copper (C1100/C1020)/Brass/Aluminum/Chromium Copper/Beryllium Copper

  • Copper Plate: Machined Components

    Lot: 1 to 3,000 units
    Thickness: Diameter 10 to 100 mm
    Total length: Max. 1,000 mm
    Material: Pure Copper (C1100/C1020)/Brass/Aluminum/Chromium Copper/Beryllium Copper

Company Profile

Company Name ISHIGAKI SHOUTEN Inc.
Founded 1951
Capital 10 million yen
Head Office 629, Seko 1-chome, Moriyama-ku, Nagoya, 463-0068 Japan
Representative Masahiro Ishigaki, President and CEO
Number of Employees 25
Business Activities Business Activities:
・Prototyping and mass production of transformer-related components
・Prototyping and mass production of components for control panel transformers
・Prototyping and mass production of high-speed railway components
・Prototyping and mass production of products for environmental and new energy industries
・Production of processed copper products for general use

Responding to climate change

Reducing greenhouse gas emissions

Acquisition of the Science Based Targets (SBT) certification for Small and medium-sized enterprises

Reduction targets


Reduce Scope 1 and Scope 2 gas emissions by 42% compared to 2020 by 2030


Identify and reduce Scope 3 emissions


* The above targets are approved at the most ambitious 1.5°C level that can be approved under the current process.





Base year GHG inventory

GHG emissions of the base year are as follows.


Base Year: 2021

Scope113.7 tCO2

・Scope2:79.8 tCO2





●SCOPE3:13721.8 tCO2

category1 [Purchased goods and services]:1469.9 tCO2

category2 [Capital goods]:12.3 tCO2

category3 [Fuel- and energy-related activities]:17.1 tCO2

category4 [Upstream transportation and distribution]:12211.2 tCO2

category5 [Waste generated in operations]:1.6 tCO2

category7 [Employee commuting]:8.0 tCO2

category12 [End-of-life treatment of sold products]:1.7 tCO2


Analysis of risks and opportunities from future climate change

We have analyzed the following risks and corresponding opportunities associated with future climate change scenarios.

【Risk】

Concern over price hikes in procurement of materials

Delays in procurement and delivery due to logistics stoppages caused by urban flooding, etc.

Delays in replacing with environmentally friendly equipment, etc.


【Opportunity】

Demand for new energy infrastructure, such as  renewable energy, will increase and product handling volumes will rise.

New low-carbon energy infrastructure will drive the need for highly processed components and increase the added value of products.

Working on SBT (Science-Based Targets) will raise awareness of environmental impact reduction within the company and result in cutting back on energy costs through reduction activities.

The company’s efforts to promote environmental responsiveness will also help to secure excellent human resources and increase corporate value.


Interview

Background leading to participation in this project

We have been developing a corporate structure to implement an environmental management system. Concurrently, we initiated the project by anticipating mutual interactions that visualize the waste and other factors.

Findings and impressions after participating

After hearing an expert talk about the coming global movement toward carbon neutrality, I received advice on how to narrow down the data for collecting and how to measure them. Though I thought I had a good grasp of our financials, I confirmed our energy consumption in detail and gained a more exact knowledge than ever before. The targets we’ve set are highly ambitious, yet it’s crucial that we’ve compiled concrete data to advance our efforts in attracting new customers, particularly in the renewable energy and related sectors.

Future proposals from our company

Because our products are used in electrical equipment and other power infrastructure essential to modern life, we were keenly aware of the large ripple effect of our efforts to become carbon neutral. Even though each of our energy use we identified is small, we’ve found hints that can help us cut waste and work more efficiently. We will use the data we’ve collected to reduce emissions during manufacturing, aiming to enhance our social impact. Through the continuation of these initiatives, we strive to become a company that supports renewable energy and other important sectors for reaching carbon neutrality.