At Steltech Makina, we engineer innovative solutions that turn industrial waste into valuable resources. With over a decade of expertise in manufacturing scrap processing machinery, we’ve witnessed how global standards shape recycling efficiency. One of the most influential frameworks in this field is the ISRI Scrap Specifications Circular — a global reference for trading, grading, and processing scrap.
Why the ISRI Scrap Circular Matters
The ISRI Scrap Specifications Circular sets consistent, transparent guidelines for trading scrap materials such as:
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Nonferrous metals (copper, aluminum, brass)
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Ferrous scrap (steel, iron)
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Paper stock, plastics, glass, and tires
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Electronics and e-waste
These standards define:
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Quality and composition (e.g., 99% copper purity)
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Acceptable contaminants
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Dispute resolution via ISRI arbitration
💡 Think of it as the “recipe book” of recycling — everyone uses the same measurements, ensuring fair trade and reliable processing.
Nonferrous Scrap: High-Value Recycling
Nonferrous metals dominate global scrap markets, and ISRI uses code names to simplify trading. Examples:
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Barley (No.1 Copper Wire): Clean, bare copper wire thicker than 16 gauge.
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Candy (No.1 Heavy Copper): Thick copper clippings or bus bars.
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Dream (Light Copper): Gutters or kettles with 88%+ copper content.
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Tablet (Clean Aluminum Litho Sheets): Ink-free litho sheets for smelting.
At Steltech, our precision shredders and separators are designed to process these grades with maximum recovery rates.
Ferrous Scrap: The Backbone of Steelmaking
Steel and iron scrap rely on strict size and cleanliness standards:
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200 (No.1 Heavy Melting Steel): Thick steel pieces, compressed by our balers for shipping efficiency.
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252 (Cupola Cast): Clean cast iron blocks and pipes, processed by our magnetic separators.
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278–282 (Processed Tire Wire): Extracted steel from tires, graded by cleanliness.
These ensure safer furnace charging and higher-quality melts.
Beyond Metals: Glass, Paper, Plastics, Electronics, Tires
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Glass cullet: Sorted by color with <5% contaminants.
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Paper stock: Defined outthrows and prohibitives for recycling mills.
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Plastics: Resin-coded PET, HDPE, PP with <2% contaminants.
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Electronics: CRT glass, shredded boards with focus on mercury-free recycling.
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Tires: Size-reduced shreds for fuel or civil applications.
Steltech machinery from glass crushers to tire processors — is engineered to meet or exceed these global specs.
Steltech’s Role in Recycling Innovation
At Steltech Makina, we don’t just build machines; we design integrated recycling systems aligned with ISRI standards. Our custom solutions:
✔️ Reduce carbon footprints
✔️ Maximize scrap purity and density
✔️ Cut operating costs with reliable automation
Whether you handle ferrous, nonferrous, or alternative scrap streams, our equipment ensures compliance and efficiency.
The ISRI Scrap Specifications Circular provides the global language of recycling — and Steltech delivers the tools to meet it. By combining standardized practices with advanced machinery, we empower industries to recover more, waste less, and move toward a circular economy.