石垣商店 Product Lineup

Our factory boasts industry-leading expertise and quality in the manufacturing of copper bars (busbars) for transformers, switchgear, and control panels in the power distribution industry. Our products, which are "specialized in copper," are essential for the efficient and safe supply of electricity. 【Our Strengths】 - Custom-made products tailored to customer requirements. - Use of high-quality copper materials, ensuring the reliability of electrical equipment. - Proven track record of supplying major manufacturers. - Offering suitable materials with thicknesses ranging from 3mm to 20mm. 【Message to Our Customers】 The stability and efficiency of power infrastructure support the quality of our lives and the growth of industries. We contribute to the overall development of society through reliable copper bar products. With a commitment to technological innovation and quality, we strongly support our customers in building their power supply systems.

Ishigaki Shoten Co., Ltd. is an expert in copper bar (bus bar) processing that supports our customers' challenges. We realize various copper bar processing, from the smallest parts to large power receiving equipment. ■Features■ 【Industry Expertise】 Specialized in product parts for power industry receiving equipment and storage facilities! 【Copper Material Procurement】 Strong relationships with manufacturers and wholesalers, leveraging our background as a wholesaler to procure high-purity copper! 【Custom Orders】 Capable of handling special shapes through general-purpose machining by skilled artisans! 【High Quality & Precision】 Providing high-quality products born from advanced technology through the manufacturing of industrial battery and power supply components! ■Track Record■ 【Strong Trust from Listed Companies】 Boasting numerous transaction records, our latest copper processing technology is highly regarded. ■Strengths■ 【Experience in Large Product Deliveries】 Rich experience in manufacturing large items requiring precision processing, such as large power receiving equipment. 【Cost and Speed】 Adjusting the balance of delivery time, cost, and precision according to customer needs, achieving cost optimization while preventing excessive quality. 【Integrated Production】 Comprehensive response from procurement to processing, plating, and quality control through integrated production. *For more details, please refer to the downloadable materials.

As a specialist in copper products, we provide various copper products essential to the power distribution and transmission equipment industry. Our products can meet a wide range of needs, from connection plates to busbars, earth bars, main bars, branch bars, and custom bending products. 1) Connection Plates: Used for connections in industrial batteries, power supply devices, and cubicles, customizable according to size, thickness, and connection method. 2) Earth Bars: Essential for power connections to distribution boards and control panels, as well as ensuring safety, capable of precise tapping and hole processing. 3) Main Bars and Branch Bars: Used as bridging bars in distribution boards, flexible in accommodating small lot production that is difficult with ready-made products. 4) Special Bending Products: Even when complex shapes or special bending processes are required, we provide high-quality and cost-effective products through our uniquely developed bender. 5) Plated Products: We have established a consistent production system up to plating in close cooperation with local partner companies. 6) Connection Rods (Bolts, Studs): Production of processed products using copper rods for transformers. 7) Connection Plates (Copper Strips): Production of processed products using copper strips for transformers. For difficult requests or projects that have been declined by other companies, please feel free to contact us.

We would like to introduce the "Top 3 Specialties" of Ishigaki Shoten Co., Ltd. Originally a wholesaler of copper and brass sheets, we source directly from primary wholesalers, eliminating unnecessary markup on material costs. Additionally, we can bend materials at various angles and accommodate various types of plating, including tin plating, nickel plating, and silver plating. 【Specialties】 ■ Procurement routes from our copper sheet wholesale days are still active ■ Capable of bending at various angles ■ Able to handle tin plating, nickel plating, silver plating, and more *For more details, please refer to the related links or feel free to contact us.

Our company specializes in copper parts processing. Please feel free to consult us when you need our services. 【Items Listed】 ■1. Background of Copper Price Increase ■2. Weak Dollar and Copper Prices ■3. Outlook for Future Copper Market *For more details, please refer to the PDF document or feel free to contact us.

This document introduces copper ingots, which are the raw materials for the production of copper busbars, copper round bars, and copper plates, certified by the London Metal Exchange (LME). It also explains the manufacturing process of copper busbars and the importance of copper ingots and copper busbars. Our company specializes in the processing of copper components. Please feel free to consult us when you need assistance. 【Contents】 ■1. Overview and manufacturing process of copper ingots ■2. Manufacturing process of copper busbars ■3. Importance of copper ingots and copper busbars *For more details, please refer to the PDF document or feel free to contact us.

Our company specializes in copper component processing. Please feel free to consult us when you need our services. [Contents] ■ Basic role of insulators ■ Types and characteristics of insulators ■ Manufacturing process of insulators *For more details, please refer to the PDF document or feel free to contact us.

This document provides an overview of Chile, a major copper-producing country that accounted for 28% of global copper ore production in 2019. Please take a moment to read it. [Contents] ■ The global importance of Chile's copper industry ■ The existence and characteristics of porphyry copper deposits ■ Chile's role in copper exports *For more details, please refer to the PDF document or feel free to contact us.

This document explains the differences between chrome copper and beryllium copper. If you have any issues related to copper processing, please feel free to contact us. We also provide information on other copper products such as tough pitch copper and oxygen-free copper. [Contents] ■ Excellent properties of chrome copper: high heat resistance and strength ■ Beryllium copper: a copper alloy with multifunctionality ■ Our company has over 60 years of experience in copper processing *For more details, please refer to the PDF document or feel free to contact us.

This document explains the differences between tough pitch copper (C1100) and chromium copper. It details the features of tough pitch copper (C1100), which combines high conductivity and workability, as well as the strengths of chromium copper, which boasts high heat resistance and high hardness. For inquiries or estimates regarding copper processing, please feel free to contact us. [Contents] ■ Features of Tough Pitch Copper (C1100): High conductivity and workability ■ Strengths of Chromium Copper: High heat resistance and high hardness ■ 60 years of experience: Professionals in copper processing *For more details, please refer to the PDF document or feel free to contact us.

This document explains the differences between nickel plating and chrome plating. It also provides guidance on appropriate selection methods, so please take a moment to read it. 【Contents】 ■ Diverse characteristics and applications of nickel plating ■ Chrome plating: Balancing durability and aesthetics ■ Appropriate selection methods for nickel plating and chrome plating *For more details, please refer to the PDF document or feel free to contact us.

Our company specializes in copper component processing. Please feel free to consult us when you need our services. 【Contents】 ■ Basics of copper busbars ■ Features and benefits of copper busbars ■ Applications and uses of copper busbars *For more details, please refer to the PDF document or feel free to contact us.

This document explains the surface treatment technology of copper and brass using acid washing, known as "Kirin treatment." It provides detailed information on the benefits, applications, and uses of Kirin treatment. Our company specializes in the processing of copper parts. Please feel free to consult us when needed. [Contents] ■ What is Kirin treatment ■ Benefits of Kirin treatment ■ Applications and uses of Kirin treatment *For more details, please refer to the PDF document or feel free to contact us.

This document explains the effects of nickel plating on copper. It details the characteristics of "copper with nickel plating," which effectively suppresses corrosion and enhances the durability of products. For inquiries or estimates regarding the processing of copper products, please feel free to contact us. [Contents] ■ Enhancing the durability and beauty of copper products with nickel plating ■ Nickel-plated copper products with heat resistance and corrosion resistance ■ Our high-quality nickel plating copper processing technology *For more details, please refer to the PDF document or feel free to contact us.

This document explains the causes of discoloration in tin plating. Our company specializes in copper component processing. Please feel free to consult us when you need our services. 【Contents】 ■ Main causes and their countermeasures ■ Management of neutralizers and maintenance of tin plating quality ■ General tips for preventing discoloration of tin plating *For more details, please refer to the PDF document or feel free to contact us.

This document explains the high-capacity conductors known as "busbars," which are used in distribution boards, control panels, and batteries. It provides detailed information on the points of manufacturing and processing, as well as the differences from earth bars. Our company specializes in copper component processing. Please feel free to consult us when needed. 【Contents】 ■ What is a busbar? ■ Points of manufacturing and processing busbars ■ Differences from earth bars *For more details, please refer to the PDF document or feel free to contact us.

This document explains the reasons for plating copper. Our company specializes in copper component processing. Please feel free to consult us when you need assistance. [Contents] ■ Characteristics of copper and the importance of plating ■ History of tin plating and its modern applications ■ Types of plating and their effects *For more details, please refer to the PDF document or feel free to contact us.

This document explains the corrosion of tin plating. Our company specializes in the processing of copper components. Please feel free to consult us when you need assistance. [Contents] ■ Corrosion prevention characteristics of tin plating ■ Corrosion risks associated with tin plating and their countermeasures ■ Diverse applications of tin plating *For more details, please refer to the PDF document or feel free to contact us.

This document explains the differences between Tough Pitch Copper (C1100) and Oxygen-Free Copper (C1020). It provides detailed information on the overview of Tough Pitch Copper (C1100), the characteristics of Oxygen-Free Copper (C1020), and a comparison between Tough Pitch Copper and Oxygen-Free Copper. Our company specializes in the processing of copper components. Please feel free to consult us when you need assistance. [Contents] ■ Overview of Tough Pitch Copper (C1100) ■ Characteristics of Oxygen-Free Copper (C1020) ■ Comparison of Tough Pitch Copper and Oxygen-Free Copper *For more details, please refer to the PDF document or feel free to contact us.

This document explains the relationship between copper prices and the dollar-yen exchange rate. 【Features】 ■ Current state of the copper market and the background of price increases ■ Relationship between the dollar index and copper prices ■ Trends in copper prices and the impact of the dollar-yen exchange rate *For more details, please refer to the PDF document or feel free to contact us.

This document explains the differences between chromium copper (C3234) and oxygen-free copper (C1020). It details the characteristics of chromium copper, which has a higher strength compared to oxygen-free copper, despite being a high-purity copper with an extremely low oxygen content. Additionally, it includes information on the applications and selection of both materials, so please take a moment to read it. [Contents] ■ Characteristics of oxygen-free copper (C1020) ■ Characteristics of chromium copper (C3234) ■ Applications and selection of both *For more details, please refer to the PDF document or feel free to contact us.

This document explains the characteristics of oxygen-free copper (C1020), which has a purity of 99.96% or higher, and the importance of annealing in its processing. Additionally, while oxygen-free copper (C1020) is a material that is easy to process, it also has its own unique challenges. We will introduce important points for processing oxygen-free copper (C1020) as well as the types of annealing treatments and their purposes. Our company specializes in the machining of copper components. Please feel free to consult us when needed. 【Topics Covered】 ■ The characteristics of oxygen-free copper (C1020) and the importance of annealing in processing ■ Important points for processing oxygen-free copper (C1020) ■ Types of annealing treatments and their purposes *For more details, please refer to the PDF document or feel free to contact us.

This document explains the meaning of the "P" in Tough Pitch Copper C1100P, as well as its characteristics and applications. Our company specializes in the processing of copper parts. Please feel free to consult us when you need assistance. 【Contents】 ■ Meaning of Tough Pitch Copper C1100P ■ Characteristics of Tough Pitch Copper C1100P ■ Applications of Tough Pitch Copper C1100P *For more details, please refer to the PDF document or feel free to contact us.

【Publication Items】 ■Proper selection methods for copper busbars and standards for current density ■Characteristics and diverse applications of copper flat bars (copper busbars) ■How to determine the current capacity and cross-sectional area of copper bars *For more details, please refer to the PDF materials or feel free to contact us.

Ishigaki Shoten Co., Ltd. mainly engages in the prototyping and mass production of transformer-related components, control panel transformer-related parts, and high-speed railway-related components. We perform press processing, lathe processing, and machining to provide a variety of products in small quantities with short delivery times and high quality. We also accommodate special processes such as welding, soldering, and surface finishing. 【Business Activities】 ■ Prototyping and mass production of transformer-related components ■ Prototyping and mass production of control panel transformer-related parts ■ Prototyping and mass production of high-speed railway-related components ■ Prototyping and mass production related to the environment and new energy industries ■ Production of copper processed products for general use *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "Machining Center" owned by Ishigaki Shoten. Starting with the versatile and user-friendly "OKK VM5 III," we also have the upgraded compact machining machine "Robodrill α-D21L" and the long-time favorite compact machining machine "Robodrill α-T14iA." Our company performs press processing, lathe processing, and machining, providing a wide variety of products with short delivery times and high quality. We also accommodate special processes such as welding, soldering, and surface finishing. Please feel free to contact us when you need our services. 【Equipment Owned】 ■ OKK VM5 III ■ Robodrill α-D21L ■ Robodrill α-T14iA *For more details, please refer to the PDF document or feel free to contact us.

Transformers and various panels differ in size depending on the installation location and the amount of power handled. However, the strength of electricity must not weaken. To maximize performance within limited constraints, we can bend and redirect the materials, and by processing as much as possible with a single copper busbar, we can minimize the installation process. It is possible to deliver stable electricity simply by securing it with screws! Given the rising prices of copper, we only charge for the necessary material costs plus processing fees, so please consider this!

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.

The products processed from copper round bars at Ishigaki Store are important products that receive the transmitted electric current. How can we achieve successful processing? The answer is that processing cannot be done without a solid understanding of the basics. What is lathe processing? It is a type of machine tool that holds a round bar in a place called a chuck, rotates it, and cuts it using a tool appropriate for its function. What types of processing are possible? 1: Outer diameter cutting Cutting the outer side of the round bar. 2: Inner diameter cutting Cutting the inside of the round bar. 3: End face processing Improving the flatness of the cut surfaces on both ends of the round bar by cutting 0.5 mm to 2 mm for dimensional accuracy. 4: Drilling Creating holes of specified size and depth on the end face of the round bar according to the drawing requirements. Multi-axis machine tools, such as composite machines, can drill holes on the side of the round bar. 5: Boring Using a boring tool on the drilled hole to widen it to fine tolerances or improve the flatness of the inner surface. 6: Thread cutting Cutting the outer and inner diameters of the round bar with a tool called a thread cutting bit to form threads. 7: Parting Cutting by pressing the tool against the center of the round bar. Understanding the basics and processing is the first step for a craftsman.

Ishigaki Shoten is highly regarded by customers for its cost reduction in the processing of high-quality copper plates and rods, diverse bending processing techniques, and the provision of various plating services. The high cost performance through direct procurement routes, precise processing techniques including crank bending, and quality management in collaboration with reliable partner companies are major reasons why Ishigaki Shoten is chosen in the industry. Leveraging these strengths, Ishigaki Shoten continues to meet various customer demands. "Reasons to Choose Ishigaki Shoten: Direct Procurement of Copper Plates" "Ishigaki Shoten's Specialty: Complex Bending Processing of Copper Busbars" "Consistent Production from Ishigaki Shoten: From Tin Plating to Nickel Plating" *For more details, please refer to the PDF materials or feel free to contact us.

"Challenges of Pure Copper (C1100) Processing and Ishigaki Shoten's Unique Technology" "Issues in Chrome Copper Processing and Ishigaki Shoten's Solutions" "Ishigaki Shoten's Copper Processing Technology Boasting 70 Years of Experience" *For more details, please refer to the PDF document or feel free to contact us.*

This document presents a specialized guide on copper processing technology and the manufacturing and design of copper busbars. It comprehensively organizes information from the material properties of copper to processing methods, design standards for busbars, manufacturing processes, surface treatments, related standards, as well as application examples and market trends. Table of Contents 1. Overview 1.1 Importance of Copper and Copper Busbars 1.2 Key Points in Copper Processing and Busbar Manufacturing 2. Material Properties of Copper 2.1 Basic Properties of Copper 2.2 Types and Characteristics of Copper Alloys 2.3 Recyclability of Copper and Reduction of Environmental Impact 3. Copper Processing Technology 3.1 Overview of Processing Methods 3.2 Plastic Processing (Rolling, Drawing, Forging, Bending) 3.3 Cutting Processing (Turning, Milling, Drilling, etc.) 3.4 Casting (Sand Casting, Die Casting) 3.5 Powder Metallurgy 3.6 Latest Processing Technologies (Micro Machining, Laser Processing, 3D Printing, etc.) 3.7 Precautions and Countermeasures during Processing 4. Manufacturing and Design of Copper Busbars 4.1 Required Performance of Busbars 4.2 Design Process and Design Standards 4.3 Insulation Treatment and Plating Treatment Continued with other items.

## Table of Contents 1. **General Overview: Basic Knowledge of Copper and Copper Alloys** 1.1 History and Characteristics of Copper 1.2 Types and Applications of Copper Alloys 1.3 Physical, Mechanical, Electrical, and Thermal Properties of Copper 1.4 Oxidation and Corrosion Characteristics of Copper 2. **Introduction to Copper Joining Technologies** 2.1 Differences Between Welding, Brazing, and Mechanical Joining 2.2 Unique Joining Challenges of Copper (High Thermal Conductivity, Susceptibility to Oxidation, Cracking, etc.) 2.3 Key Points for Selecting Joining Technologies 3. **Comprehensive Explanation of Copper Welding** 3.1 Overview and History of Copper Welding 3.2 Methods and Types of Copper Welding (TIG, MIG, Resistance Spot, Laser, Electron Beam, etc.) 3.3 Common Defects During Welding and Countermeasures (Blowholes, Cracking, Oxidation, etc.) And so on, continuing up to eight chapters.