What Is a Metal Coil? Types, Processing Methods & Common Uses (2025 Complete Guide)

A metal coil is a long sheet of metal rolled into a large spiral form, similar to a long metal ribbon. These coils are produced by rolling slabs into thin sheets using heavy rolling mills.

• Easy to transport
• Can be cut to any length
• Perfect for large production volumes
• Saves storage space
• Ideal for automated cutting machines

Made by rolling steel at high temperature.

• Rough finish
• Lower cost
• Good strength
• Best for: Structural work, fabrication, heavy machinery

Made from HRC but rolled again at room temperature.

• Smooth finish
• High accuracy
• Higher strength
• Best for: Automotive, appliances, precision parts

Zinc-coated for corrosion resistance.

• Best for: Roofing, HVAC, exterior applications

Zinc + aluminium coating.

• Best for: Coastal areas, high-corrosion zones

Made from SS 304, 316, 321, Duplex etc.

• Best for: Food industry, pharma, chemicals, decorative panels

Lightweight and corrosion-resistant.

• Best for: Heat exchangers, automotive, HVAC fins

There are three main stages:

Steel slab → Heated → Passed through rollers → Long sheet → Rolled into HRC coil.

Removes scale, rust, impurities.

HRC passed into cold rolling mill for higher precision to form CRC.

Galvanizing, annealing, polishing, coating, etc.

• Slitting – Cuts coil into narrow strips.
• Cut-to-Length – Converts coils into sheets.
• Re-Coiling – Rewinds into smaller coils.
• Polishing – For stainless steel coils.
• Coating – Zinc, galvanizing, color coating.
• Embossing – Creates textured patterns.

• Economical for bulk production
• Can be cut to any size
• Saves storage & space
• Perfect for continuous lines
• Lower material wastage
• Easy transportation
• Suitable for automation

• Roofing sheets
• Wall cladding
• Decking sheets
• Uses: GI / GL coils

• Car body parts
• Structural panels
• Interior components
• Uses: CRC / Aluminum coils

• Refrigerators
• Ovens
• Washing machines
• Uses: Stainless & CRC coils

• Tanks
• Heat exchanger sheets
• Pressure components
• Uses: SS, Duplex, Nickel coils

• Laser cutting
• Bending
• Punching

• Ducts
• Fins
• Housings
• Uses: Aluminum / Galvanized coils

• For high precision → CRC
• For corrosion resistance → GI / GL
• For food & pharma → SS 304/316 coils
• For high temperature → SS 310S / Inconel coils
• For marine → GL / SS 316
• For automotive → CRC / Aluminum

If still confused, Moksh Tubes provides coil selection support.

Metal coils are the backbone of modern manufacturing thanks to their easy handling, custom length, cost-effectiveness, and flexibility.

Whether you need HRC, CRC, GI/GL, Stainless Steel, or Nickel Alloy coils, Moksh Tubes provides certified, high-quality materials with tailored sizing solutions.