Cold Rolled Coils & Sheets (Annealed)

Reliable Cold Rolled Steel Solutions for Global Industrial Applications

Kennen Steel supplies high-quality Cold Rolled Annealed Steel Coils and Sheets for global manufacturers, distributors, and industrial buyers.

Through controlled cold rolling and advanced atmosphere annealing processes, our products achieve excellent surface quality, high dimensional accuracy, and superior formability-making them the ideal choice for stamping, deep drawing, bending, welding, and precision manufacturing.

With decades of professional export experience and a robust supply chain, Kennen Steel delivers customized cold rolled steel solutions, including tailored sizes, protective seaworthy packaging, and end-to-end logistics support.

What is Cold Rolled Annealed Steel?

Cold Rolled Annealed Steel is produced by cold reducing hot rolled pickled coils and subsequently applying a controlled, protective atmosphere heat treatment (annealing).
During the annealing process, the steel is heated under strictly monitored conditions to relieve internal stresses and recrystallize the grain structure. Compared to full hard cold rolled steel, annealed steel offers:

Higher Ductility & Better Elongation:

Extremely easy to deform, shape, and manipulate without cracking or fracturing.

Superior Stamping & Deep Drawing Performance:

Perfectly suited for complex geometric components and deep-drawn parts.

Highly Uniform Mechanical Properties:

Consistently stable performance across entire production batches, minimizing machinery downtime on your press lines.

Manufacturing Process & Quality Control

Our localized quality control engineers monitor each stage of the manufacturing process to ensure consistent, mill-direct quality.

Hot Rolled Coil Pickling:

Hot rolled steel coils undergo continuous acid pickling to completely remove surface oxide scale and rust, creating a pristine, clean surface ready for cold reduction.

Controlled Atmosphere Annealing:

The steel is heat-treated in advanced bell-type or continuous annealing furnaces under a protective hydrogen/nitrogen atmosphere. This process eliminates internal stresses, restores the steel's ductility, and optimizes grain structure.

Precision Cold Rolling:

The pickled steel is fed into multi-high cold rolling mills. We utilize automatic gauge control (AGC) systems to achieve ultra-precise thickness tolerances (up to ±0.02 mm depending on specification), superior smooth surface finishes, and excellent flatness.

Comprehensive Rigorous Inspection:

Before shipment, our specialists perform strict testing in accredited laboratories, covering chemical composition, mechanical properties (tensile strength, yield strength, elongation), dimensional accuracy, and surface quality.

Product Features & Advantages

Excellent Formability:

Optimized for deep drawing, complex stamping, and sharp-angle bending without cracking.

Superior Surface Finish:

Available in bright, smooth, or matte finishes, perfectly suited for direct painting, plating, electro-galvanizing, or decorative powder coating.

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High Dimensional Accuracy:

Offers much tighter tolerances and flatter sheets than hot-rolled alternatives, helping you minimize material waste and improve nesting efficiency.

Consistent Performance:

Uniform hardness and yield-to-tensile ratios throughout the entire coil guarantee stable, predictable performance on your automated pressing lines.

Product Specifications

Item	Specification
Product	Cold Rolled Annealed Steel Coil & Sheet
Standards	ASTM / EN / JIS / DIN / GB / ISO
Thickness	0.15 mm - 3.0 mm
Width	600 mm - 1500 mm
Coil ID	508 mm / 610 mm
Coil Weight	3.0 - 25.0 MT (Customized upon request)
Surface Finish	Smooth / Bright / Matte (Oiled or Dry)
Edge Type	Mill Edge / Slit Edge
Quality Grade	Commercial Quality (CQ) / Drawing Quality (DQ) / Deep Drawing Quality (DDQ)
Packing	Export Standard Seaworthy Packing

Typical Mechanical Properties

Grade	Yield Strength (ReL)	Tensile Strength (Rm)	Elongation (A80mm)
DC01	≤ 280 MPa	270 - 410 MPa	≥ 28%
DC03	140 - 240 MPa	270 - 370 MPa	≥ 34%
DC04	120 - 210 MPa	270 - 350 MPa	≥ 38%

Industrial Applications

Automotive Industry:

Body-in-white (BIW) structures, seat frames, oil pans, brackets, and highly complex deep-drawn stamping parts.

Home Appliances:

Structural frames and outer panels for refrigerators, washing machine drums, microwave shells, and HVAC units.

Industrial Manufacturing:

Precision laser-cut components, cable trays, electrical enclosures, and custom machinery parts.

Furniture & Hardware:

High-end steel office cabinets, shelving systems, hinges, brackets, and interior architectural profiles.

Why Partner with Kennen Steel?

Rigid Quality Oversight:

We do not just source; we actively supervise. Our on-site inspectors verify the thickness, width, surface quality, and packaging of every batch before container sealing.

Risk Mitigation:

By managing raw material sourcing, production schedules, and logistics under one roof, we eliminate supply chain bottlenecks and protect you from market volatility.

Flexible MOQ & Customization:

We accommodate trial orders, customized slitting widths, specific coil weights, and specialized surface oiling levels to fit your precise production line setup.

Transparent Logistics:

Real-time shipping updates, clear documentation, and efficient handling of customs clearances for stress-free importing.

FAQ

Q: What is the difference between Full Hard and Annealed cold rolled steel?

A: Full Hard cold rolled steel (HRB ≥ 85) is unannealed; it is highly rigid and brittle with virtually no formability, often used for simple bending or flat profile sheets. Annealed cold rolled steel is soft (HRB ≤ 60), highly ductile, and optimized for complex stamping, stretching, and deep drawing.

Q: Can you supply specific surface finishes like Matte, Bright, or Oiled?

A: Yes. We can customize the surface roughness (matte finish for better paint adhesion, or bright/mirror finish for decorative use). We also apply premium anti-rust oils based on your storage duration (dry, light-oiled, or heavily-oiled).

Q: Do you support third-party inspections?

A: Absolutely. We welcome and facilitate third-party inspections by internationally recognized testing institutions. Inspectors can access our partner mills or warehouses to perform sampling, dimensional checks, and witness loading.

Q: What is your minimum order quantity (MOQ)?

A: Our standard MOQ for production runs is typically 25 MT (one full container load). However, for trial orders or standard stock sizes, we can often accommodate smaller quantities. Please contact our sales team to discuss your specific project.

Q: How do you prevent rust during long-distance ocean transit?

A: We use a combination of rust-preventative oil, Vapor Corrosion Inhibitor (VCI) paper, moisture-proof plastic wrapping, and robust steel packaging sheets, topped off with heavy-duty desiccants placed inside the shipping containers.

With abundant experience, we are one of the most professional cold rolled coils & sheets (annealed) manufacturers and suppliers in China. We warmly welcome you to buy high quality cold rolled coils & sheets (annealed) in stock here and get quotation from our factory. For price consultation, contact us.