Spherical Graphite Iron Backup Rolls
Spherical graphite iron backup rolls are made from nodular (ductile) cast iron, offering excellent toughness for high-tonnage rolling mills. These rolls provide superior fatigue resistance compared to grey iron, making them suitable for demanding applications. They are classified under tariff item 8455.30.00 as rolls for metal-rolling mills.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the rolls are imported with other rolling mill parts
Parts of rolling mills may be classified under this item when not separately specified.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document the nodular cast iron composition and mechanical properties to support classification
• Ensure the rolls are not considered parts of general use
• Verify if any trade remedies apply to the product
Related Products under Tariff item 8455.30.00
Backup Rolls for Cold Rolling Mills
Backup rolls for cold rolling mills are large-diameter rolls that provide structural support to the smaller work rolls during the cold reduction of metal strips. They are essential components of the rolling mill assembly, ensuring precise thickness control and surface quality. These rolls fall under tariff item 8455.30.00 as they are specifically designed rolls used in metal-rolling mills.
Cast Iron Guide Rolls for Rolling Mills
Cast iron guide rolls are used in rolling mills to align and edge-control metal strips as they enter work roll stands. These rolls provide precise lateral guidance, preventing misalignment and ensuring consistent product quality. They are classified under tariff item 8455.30.00 as rolls specifically designed for rolling mill operations.
Centrifugally Cast Ring Rolls for Section Mills
Centrifugally cast ring rolls are composite rolls with a high-speed steel working layer over a ductile iron core, used in section mills for rolling beams and shapes. The centrifugal casting process ensures a dense, wear-resistant surface, making them ideal for demanding rolling applications. These rolls fall under tariff item 8455.30.00 as specialized rolls for metal-rolling mills.
Composite ICDP Rolls for Roughing Stands
Composite ICDP rolls feature an alloy iron shell centrifugally cast over a steel shaft, designed for roughing stands in rolling mills. The indefinite chill double poured construction provides excellent thermal cracking resistance, making them suitable for high-temperature applications. These rolls are classified under tariff item 8455.30.00 as rolls for metal-rolling mills.
CPC Rolls for Hot Strip Finishing
CPC rolls, or Centripetal Pattern Controlled rolls, have a textured surface pattern that controls strip crown in hot strip finishing mills. The pattern optimizes flatness control, ensuring high-quality steel sheets. These rolls are classified under tariff item 8455.30.00 as specialized rolls for metal-rolling mills.
Forged Alloy Steel Work Rolls for Aluminum Rolling
Forged alloy steel work rolls are precision-forged for use in aluminum hot and cold rolling mills to produce foil and sheet products. These rolls feature chrome plating for corrosion resistance and are essential for achieving high-quality surface finishes. They are classified under tariff item 8455.30.00 as rolls for metal-rolling mills.