Leading Copper Strips Manufacturer in India – Koprex
Koprex is a trusted name in the copper industry, recognized as a leading copper strips manufacturer and supplier in India. With years of expertise in metallurgy and precision manufacturing, we produce high-quality copper strips that meet international standards while serving industries ranging from electrical and electronics to earthing, automotive, and renewable energy. Our commitment to purity, consistency, and on-time delivery has made Koprex the preferred choice for engineers, contractors, and procurement teams across India and beyond.
Whether you need copper strips for earthing systems, transformer windings, busbars, or specialized industrial applications, Koprex delivers strips engineered for superior electrical conductivity, mechanical strength, and long-term durability.
What is a Copper Strip?
A copper strip is a flat, elongated piece of copper available in coil form or cut lengths, produced by rolling copper billets or ingots into thin, uniform sections. Owing to copper's exceptional electrical conductivity, thermal performance, and corrosion resistance, copper strips are widely used across electrical, industrial, and construction sectors. They are manufactured in varying thicknesses, widths, and tempers to suit diverse application requirements — from delicate electronic components to heavy-duty earthing installations.
At Koprex, our copper strips are manufactured using high-purity copper cathodes and processed under strict quality control, ensuring every strip we deliver performs reliably under demanding operating conditions.
Types of Copper Strips We Manufacture
Koprex offers a comprehensive range of copper strips to address varied industrial needs:
- Bare Copper Strips – Ideal for earthing, grounding, and general electrical applications where uncoated conductivity is required.
- Flexible Copper Strips – Designed for applications requiring bendable, low-resistance connections such as busbar links and flexible connectors.
- Tinned Copper Strips – Coated with tin for enhanced corrosion resistance, commonly used in harsh or outdoor environments.
- Copper Earthing Strips – Engineered specifically for lightning protection and electrical grounding systems.
- Thin Copper Strips / Foils – Used in electronics, EMI shielding, and precision fabrication.
- C11000 Copper Strips (ETP Copper) – Electrolytic tough pitch copper strips valued for excellent conductivity.
- C10100 / C10200 Oxygen-Free Copper Strips – High-purity, oxygen-free strips suited for critical electrical and vacuum applications.
- C12200 Copper Strips (DHP Copper) – Deoxidized high phosphorus copper strips known for good weldability and corrosion resistance.
Copper Strip Specifications
| Parameter | Details |
|---|---|
| Standard Compliance | ASTM B152, ASTM B370, BS EN 1652, DIN 17670, IS 191 |
| Material | Pure Copper / Oxygen-Free Copper |
| Width Range | 5 mm – 1250 mm |
| Thickness Range | 0.03 mm – 25 mm |
| Length | Coil form or cut lengths up to 6000 mm |
| Temper | Soft (Annealed), Half-Hard, Full-Hard, Extra Hard |
These specifications allow Koprex to serve customers with highly specific project requirements, from micro-thin foils to heavy-gauge earthing strips.
Copper Strip Grades Available
Koprex stocks and supplies copper strips across multiple internationally recognized grades, including:
- C10100 – Oxygen-Free Electronic Copper
- C10200 – Oxygen-Free Copper
- C10300
- C10800
- C11000 – Electrolytic Tough Pitch Copper
- C11400
- C11600
- C12200 – Phosphorus Deoxidized Copper (DHP)
- C14200 / C14420
- C22000 (CuZn10) – Copper Alloy Strip
Each grade offers a distinct balance of conductivity, formability, and corrosion resistance, allowing customers to select the right material for their specific application.
Chemical Composition of Copper Strips
| Element | Percentage (%) | Function |
|---|---|---|
| Copper (Cu) | 99.90 – 99.99 | Provides high conductivity and ductility |
| Phosphorus (P) | 0.01 – 0.04 | Improves corrosion resistance |
| Iron (Fe) | 0.02 max | Trace element influencing strength |
| Lead (Pb) | 0.05 max | Enhances machinability |
| Zinc (Zn) | 0.05 max | Adds strength in select alloys |
Mechanical Properties of Copper Strips
| Property | Value |
|---|---|
| Tensile Strength | 210 – 300 MPa |
| Yield Strength | 100 – 200 MPa |
| Elongation | 30 – 50% |
| Hardness (Vickers) | 40 – 100 HV |
| Density | 8.96 g/cm³ |
| Electrical Conductivity | Up to 97–101% IACS |
These properties make Koprex copper strips ideal for applications demanding both mechanical resilience and superior electrical performance.
Applications of Copper Strips
Copper strips from Koprex are trusted across a wide spectrum of industries:
- Electrical Earthing & Grounding – Reliable fault-current dissipation and safety compliance for industrial and residential installations.
- Transformers & Switchgear – Used in windings, connectors, and control panels for stable electrical performance.
- Renewable Energy (Solar Power) – Employed in solar panel interconnections and grounding systems.
- Automotive Industry – Used in wiring harnesses, connectors, and electrical assemblies.
- Oil & Gas and Petrochemical Plants – Corrosion-resistant strips for hazardous environment installations.
- Ship Building & Marine Applications – Durable strips resistant to saline and humid conditions.
- Aerospace Components – Precision strips for lightweight, high-conductivity assemblies.
- Fertilizer & Chemical Plants – Reliable grounding and bonding solutions in corrosive atmospheres.
- Busbars & Flexible Connectors – Low-resistance current-carrying links in power distribution systems.
Why Choose Koprex as Your Copper Strip Supplier?
- Consistent Purity & Quality – Every batch of copper strip undergoes stringent testing for tensile strength, hardness, and conductivity before dispatch.
- Custom Sizes on Demand – We manufacture copper strips in customized thicknesses, widths, and lengths tailored to project specifications.
- Wide Grade Availability – From oxygen-free C10100 to alloyed C22000, Koprex maintains ready stock across major copper grades.
- Standards-Compliant Manufacturing – Our copper strips conform to ASTM, BS, DIN, and IS standards, ensuring compatibility with global procurement requirements.
- Reliable Pan-India & Export Supply – Koprex serves customers across India's major industrial hubs and exports to international markets, backed by dependable logistics and packaging.
- Secure Packaging – Copper strips are packed in wooden boxes, wooden pallets, shrink wrap, or gunny bags depending on order size and shipping requirements, minimizing transit damage.
- Technical Support – Our team assists customers in selecting the right grade, temper, and dimensions for their specific application, ensuring optimal performance and cost-efficiency.
Copper Strip Testing & Quality Assurance
Quality is at the core of every copper strip Koprex manufactures. Our testing protocols include:
- Tensile Strength Testing – Confirms mechanical properties fall within specified engineering limits.
- Hardness Testing – Validates suitability for the intended temper and application.
- Conductivity Testing – Ensures strips meet or exceed IACS conductivity benchmarks.
- Dimensional Inspection – Verifies thickness and width tolerances for precision-critical uses.
This rigorous approach ensures that every Koprex copper strip performs reliably, whether deployed in a rooftop earthing system or a high-precision transformer assembly.
Copper Strip Sizes and Availability
Koprex maintains extensive stock to support both bulk industrial orders and smaller custom requirements:
- Strip & Foil Thickness: 0.030 mm to 3.00 mm
- Sheet Thickness: 0.30 mm to 3.00 mm
- Width Range: 10 mm to 450 mm (strips), up to 1250 mm (sheets)
- Coil Weight: Up to 2–3 tons depending on dimensions
- Cut Lengths: Up to 6000 mm on request
This flexibility allows Koprex to fulfill orders for everything from delicate electronic foils to heavy-duty industrial earthing strips.
Koprex – Your Trusted Partner for Copper Strips in India
As industries across India continue to expand their electrical infrastructure, renewable energy capacity, and industrial manufacturing base, the demand for high-quality copper strips continues to grow. Koprex is committed to meeting this demand with consistent quality, competitive pricing, and dependable supply chains.
From earthing contractors and panel manufacturers to OEMs in the automotive and solar sectors, businesses across India rely on Koprex for copper strips that combine purity, performance, and precision engineering.
Get in touch with Koprex today to discuss your copper strip requirements, request a quotation, or learn more about our full range of copper products including copper rods, copper busbars, and copper earthing solutions. Our team is ready to help you find the right copper strip specification for your project — delivered on time, every time.
For enquiries, bulk orders, or custom specifications, contact the Koprex team via our website at koprex.in.
Frequently Asked Questions
1. What are copper strips used for?
- Copper strips are widely used in electrical earthing, grounding systems, transformer windings, switchgear, busbars, solar power installations, automotive electrical components, electronics, and industrial power distribution. Their excellent electrical conductivity and corrosion resistance make them suitable for demanding applications.
2. What grades of copper strips does Koprex supply?
- Koprex supplies copper strips in multiple international grades, including C10100, C10200, C10300, C10800, C11000 (ETP Copper), C11400, C11600, C12200 (DHP Copper), C14200, C14420, and C22000 (CuZn10). We also provide customized grades based on project requirements.
3. What sizes of copper strips are available?
- Koprex manufactures copper strips in thicknesses ranging from 0.03 mm to 25 mm, widths from 5 mm to 1250 mm, and lengths up to 6000 mm. Copper strips are available in both coil form and cut lengths, with custom dimensions available on request.
4. Why should I choose Koprex as a copper strip manufacturer in India?
- Koprex offers premium-quality copper strips manufactured from high-purity copper, strict quality control, customized sizes, international standard compliance (ASTM, BS, DIN & IS), competitive pricing, fast delivery, and reliable technical support for industrial applications across India and overseas.
5. What industries use Koprex copper strips?
- Koprex copper strips are widely used in electrical and power distribution, transformer manufacturing, renewable energy (solar), automotive, electronics, construction, oil & gas, petrochemical plants, shipbuilding, aerospace, and chemical industries.
6. Are Koprex copper strips manufactured according to international standards?
- Yes. Koprex manufactures copper strips in compliance with international standards such as ASTM B152, ASTM B370, BS EN 1652, DIN 17670, and IS 191. Every product undergoes strict quality inspections to ensure consistent performance and dimensional accuracy.
7. Can Koprex manufacture custom-size copper strips?
- Yes. Koprex offers customized copper strips in various thicknesses, widths, lengths, and tempers to meet specific customer requirements. We support both small custom orders and bulk industrial production with quick turnaround times.
8. What tests are performed on Koprex copper strips?
- Every copper strip undergoes comprehensive quality testing, including electrical conductivity testing, tensile strength testing, hardness testing, dimensional inspection, and visual quality checks. This ensures the products meet required engineering and industry standards.
9. What is the difference between bare copper strips and tinned copper strips?
- Bare copper strips provide maximum electrical conductivity and are commonly used for earthing and grounding systems. Tinned copper strips are coated with a thin layer of tin, offering enhanced corrosion resistance, making them ideal for outdoor, marine, and high-humidity environments.
10. Does Koprex supply copper strips across India?
- Yes. Koprex supplies copper strips to customers across India, including Delhi, Mumbai, Chennai, Bengaluru, Hyderabad, Pune, Ahmedabad, Kolkata, and other major industrial locations. We also export copper strips to international markets with secure packaging and timely delivery.