Coil Manufacturer, Stockist & Exporter in India

Coil Manufacturer, Stockist & Exporter in India – Exotic Metals LLP

Introduction: The Continuous Pulse of Fabrication

At Exotic Metals LLP ours Coils are the essential raw material for industries that demand high-speed, continuous production. A coil is essentially a long, continuous strip of metal that has been wound into a compact, cylindrical roll. This format is the most efficient way to transport and store vast quantities of flat-rolled metal, allowing manufacturers to feed automated stamping, roll-forming, and laser-cutting machines without the frequent interruptions required by individual sheets.

Our coils are produced through advanced Hot Rolling and Cold Rolling mills, where the thickness is meticulously controlled to ensure uniformity across the entire length of the strip—which can often reach several hundred meters. As a leading manufacturer and exporter in India, Exotic Metals LLP provides coils in an exhaustive range of standard and "Exotic" alloys. Whether you are producing automotive components, corrugated roofing, or complex heat exchanger fins, our coils offer the surface consistency and mechanical integrity needed for zero-defect automated processing.

Technical Specification Table

Feature	Details
Thickness Range	0.05 mm to 12.0 mm
Width Range	10 mm (Slit) to 2000 mm (Mill Width)
Inner Diameter (ID)	400 mm, 508 mm, 610 mm
Outer Diameter (OD)	Up to 2000 mm
Standard Specifications	ASTM A240, ASTM A480, ASME SA240, EN 10088-2
Surface Finish	2B, BA (Bright Annealed), No. 1, No. 4, Mirror Finish
Weight per Coil	0.5 MT to 25 MT (Custom weights available)
Edges	Mill Edge, Slit Edge, or Deburred Edge

Primary Types of Metal Coils

Exotic Metals LLP categorizes coils based on their thermal processing and surface treatments to suit various manufacturing environments:

Hot Rolled Coils

Rolled at high temperatures, these coils offer superior ductility and toughness. While they have a characteristic dark, matte finish (No. 1), they are the most cost-effective solution for structural components, pipe manufacturing, and heavy-duty shipping containers.
Slit Coils

At Exotic Metals LLP, we operate high-precision slitting lines that can take a wide mill coil and cut it into multiple narrow "Strips." These are used by industries manufacturing small parts like washers, springs, and cable trays, ensuring zero material wastage for the client.
Cold Rolled Coils

Processed at room temperature, cold-rolled coils are the hallmark of precision. They feature a smooth, reflective surface and extremely tight thickness tolerances. These are essential for the production of home appliances, automotive body panels, and precision electronics where a high-quality finish is mandatory.
Galvanized & Pre-Painted Coils

To prevent corrosion in outdoor environments, we provide carbon steel coils coated with Zinc (Galvanized) or high-durability paints. These are the standard for the roofing, cladding, and HVAC ducting industries.
Perforated & Expanded Coils

For filtration and architectural applications, we provide coils that have been pre-punched or expanded into decorative and functional patterns. These are widely used in acoustic panels, industrial screens, and safety walkways.

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Grade Range: From Basic Steel to Superalloys

We maintain a diverse inventory of coil grades to meet specific thermal and chemical resistance requirements:

Stainless Steel: 304, 304L, 316, 316L, 316Ti, 321, 310S, 347, 409, 430, 439, 441.
Nickel Alloys: Inconel 600, 625, Monel 400, Hastelloy C276, Alloy 20.
Duplex Stainless Steel: UNS S31803, S32205 (For high-strength corrosive environments).
Titanium Alloys: Grade 1, Grade 2, Grade 4 (For aerospace and chemical use).
Carbon Steel: IS 2062, ASTM A36, SAE 1008, 1010.

Chemical Composition (%)

Our coils are verified for metallurgical uniformity to ensure consistent performance during high-speed stamping.

Grade	Carbon (C)	Chromium (Cr)	Nickel (Ni)	Molybdenum (Mo)	Others
SS 304L	0.03 Max	18.0–20.0	8.0–11.0	—	Mn: 2.0
SS 316L	0.03 Max	16.0–18.0	10.0–14.0	2.0–3.0	N: 0.10
Alloy 625	0.10 Max	20.0–23.0	58.0 Min	8.0–10.0	Nb + Ta: 3.15
Titanium Gr 2	0.08 Max	—	—	—	O: 0.25 Max

Mechanical Properties

Tested to ensure the material can withstand deep drawing and roll-forming.

Grade	Tensile (MPa)	Yield (MPa)	Elongation (%)	Hardness (HRB/HRC)
SS 304	515 Min	205 Min	40%	88 HRB Max
SS 430	450 Min	205 Min	22%	89 HRB Max
Duplex 2205	655 Min	450 Min	25%	31 HRC Max
Inconel 600	550 Min	240 Min	30%	80 HRB Max

Standard Weight Chart (Theoretical)

Formula: $\text{Width (m)} \times \text{Thickness (mm)} \times 8.0 = \text{Weight per Linear Meter (kg)}$.

Width (mm)	Thickness (mm)	Weight (kg/meter)	Total Length (For 1 MT Coil)
1000 mm	0.5 mm	4.00 kg	250 Meters
1250 mm	1.0 mm	10.00 kg	100 Meters
1500 mm	2.0 mm	24.00 kg	41 Meters
100 mm (Slit)	1.0 mm	0.80 kg	1250 Meters
500 mm (Slit)	3.0 mm	12.00 kg	83 Meters

Delivery & Packaging Information

At Exotic Metals LLP, we implement specialized coil-handling protocols to prevent edge damage and collapse:

Secure Bundling: Small diameter bars are bundled in heavy-duty HDPE wrapping, while larger diameter bars are securely strapped with metal bands to prevent movement during transit.
Surface Protection: Bright, Ground, and Polished bars are individually protected using plastic sleeves or PVC coating to avoid scratches and surface damage.
International Crating: Export consignments are packed in heat-treated wooden crates or plywood boxes, fully compliant with ISPM-15 standards for global shipping.
Detailed Marking: Each bar is clearly marked with Grade, Size, Heat Number, and the Exotic Metals LLP seal, ensuring complete traceability.
Comprehensive Documentation: Mill Test Certificates (MTC) as per EN 10204 3.1 are provided along with PMI, Ultrasonic Testing, and third-party inspection reports upon request.

Frequently Asked Questions (FAQ)

What is the benefit of "Slit Coils" over standard widths?

Slit coils are pre-cut to your exact production width. This allows you to feed the material directly into your machines without having to perform on-site cutting, significantly reducing scrap rates and labor costs.

Can Exotic Metals LLP provide "Small OD" coils for manual handling?

Yes. While industrial coils are massive, we can perform "re-coiling" to provide smaller, lightweight coils for easier handling in smaller workshops.

What is the difference between "Mill Edge" and "Slit Edge"?

A mill edge is the natural, slightly uneven edge formed during the rolling process. A slit edge is cut with precision knives, resulting in a perfectly straight, square edge that is often necessary for precision welding or forming.

Does Exotic Metals LLP offer "Spring Hard" coils?

Absolutely. We provide coils in various temper conditions, including Half-Hard, Full-Hard, and Spring-Hard, specifically for the manufacturing of tension springs and high-strength clips.

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