Products Description
High-Precision Cold Rolled Steel Strip for Industrial Applications
Precision Cold Rolled Annealed Steel Strip is a high-performance steel product manufactured through precision multi-roll cold rolling and controlled atmosphere annealing processes.
The cold rolling process drastically improves thickness accuracy, surface quality, and dimensional consistency, while the advanced recrystallization annealing process restores ductility, relieves internal stress, and enhances formability.
Why Choose Our Cold Rolled Annealed Steel Strips?
Ultra-tight thickness tolerance: Up to +/-0.01 mm (surpassing standard international limits).
Superior, defect-free surface finish: Optimized for high-end electroplating and cosmetic coatings.
Tailored mechanical properties: Uniform grain structure designed for complex deep drawing and stamping.
Excellent flatness and shape control: Minimal coil set and wave height, perfect for high-speed automated lines.
Low tool wear and stable processing: Extends the lifespan of your expensive stamping dies.
Key Features and Advantages
High Dimensional Accuracy (Tight Tolerances)
Precision cold rolled annealed steel strips are manufactured under strict computerized Automatic Gauge Control (AGC) to ensure consistent performance from the head to the tail of the coil.
|
Dimension / Parameter |
International Standard (JIS G3141 / EN 10140) |
Our Guaranteed Precision |
Your Direct Benefit |
|
Thickness Tolerance |
+/-0.03 mm to +/-0.05 mm |
Up to +/-0.01 mm |
Zero machine jamming, ultra-low scrap rates |
|
Width Tolerance |
+/-0.20 mm |
Up to +/-0.10 mm |
Perfect fit for automated assembly lines |
|
Hardness Variation |
+/-10 HV to +/-15 HV |
Within +/-5 HV |
No springback issues, consistent forming |
Superior Surface Quality and Finish
Our advanced rolling oil filtration and washing technology provide a smooth, clean, and uniform surface finish.
Surface Finishes Available: Bright finish, Dull (Matte) finish, and Mirror finish.
Surface Advantages:
Low surface roughness (Ra) variations across the entire batch.
Deep-cleansed, grease-free surfaces ready for direct processing.
Excellent adhesion for subsequent electroplating, hot-dip coating, painting, or welding.
Ideal for precision cosmetic components and high-end consumer electronics.
Stable and Tailored Mechanical Properties
Controlled bell-type and continuous annealing treatments under protective atmospheres (hydrogen/nitrogen) recrystallize the grain structure to restore flexibility.
Optimized Tensile and Yield Strength: Perfectly matched to your specific drawing and bending requirements.
Excellent Elongation Rates: Ensures crack-free deep drawing and complex 90-degree or 180-degree bending.
Perfect Microstructure: Homogeneous grain size distribution prevents orange peel defects on part surfaces after forming.
Fully Customized Manufacturing Solutions
We do not just supply steel; we provide tailored material solutions to meet your exact engineering demands.
Steel Grade: Standard carbon steel, deep drawing steel, and specialty alloy steel.
Thickness Range: 0.05 mm to 3.0 mm (Ultra-thin precision foils available).
Width Range: 10 mm to 1500 mm.
Edge Conditions: Mill Edge, Slit Edge, and Deburred / Round Edges (highly recommended for safety and automated feeding).
Coil ID / OD and Weight: Tailored to fit your uncoiling machine capacities.
Manufacturing Process and Complete Traceability
We follow strict, ISO-certified production procedures to ensure complete traceability from raw material to finished strip.
Raw Material Selection: We source premium hot-rolled coils from top-tier global mills with guaranteed chemical composition and inclusion-free purity.
Pickling Process: Continuous chemical pickling removes oxide scales and impurities to prepare a pristine substrate for rolling.
Precision Cold Rolling: Multi-roll mills equipped with AGC systems reduce thickness precisely while achieving excellent shape flatness.
Controlled Annealing Treatment: Full-hydrogen hood annealing furnaces restore the mechanical properties under protective atmosphere, eliminating oxidation.
Slitting and Cutting: Precision slitting lines cut the coils into target widths with minimal edge burrs.
Quality Inspection: Each production batch undergoes rigorous laboratory testing before packaging.
Product Specifications
|
Item |
Specification / Capability |
|
Product Name |
Precision Cold Rolled Annealed Steel Strip |
|
Thickness Range |
0.05 mm - 3.0 mm (Custom tight tolerances up to +/-0.01 mm) |
|
Width Range |
10 mm - 1500 mm (Custom slitting width tolerance up to +/-0.1 mm) |
|
Steel Grades |
SPCC, SPCD, SPCE, DC01, DC03, DC04, and customized specialty grades |
|
Hardness States |
Soft / Annealed (A), 1/8 Hard (8), 1/4 Hard (4), 1/2 Hard (2), Full Hard (1) |
|
Surface Finish |
Matte (Dull), Bright, Mirror, or standard Cold Rolled Surface |
|
Edge Type |
Mill Edge, Slit Edge, Deburred Edge, Round Edge |
|
Coil Inner Diameter (ID) |
508 mm / 610 mm (or customized) |
|
Coil Weight |
Customized to customer equipment requirements |
|
Packing |
Export Standard Seaworthy Packing (Vertical/Horizontal eye-to-sky/wall) |
High-Precision Applications
Our Precision Cold Rolled Annealed Steel Strip is widely used in high-precision, high-stress industries requiring strict material consistency.
Automotive Industry
Automotive brackets, structural stampings, and reinforcement plates.
Precision clutch plates, seat belt buckles, and transmission components.
Interior metal components and deep-drawn assemblies.
Electrical and Electronics Industry
Motor laminations, rotor and stator components.
Transformer shielding parts and connector terminals.
Shielding cans, micro-motor shells, and electronic connectors.
Precision Machinery and Springs
Precision machine parts, washers, and shims.
Flat springs, spiral springs, and high-fatigue metal clips.
Hardware components requiring excellent bending and forming capabilities.
Hardware and Industrial Tools
Industrial fasteners, locks, and metal accessories.
Precision measuring tools and structural industrial hardware.
Quality Assurance and Laboratory Testing
At our facility, quality control is integrated throughout the complete supply chain. Our laboratories are equipped with calibrated testing instruments to verify every single parameter:
Chemical Testing: Optical Emission Spectrometer (OES) analysis to verify chemical elements.
Mechanical Testing: Tensile testing machine for yield strength, tensile strength, and elongation; Vickers / Rockwell hardness testers.
Dimensional Inspection: Laser thickness gauge online detection + manual micrometer offline spot-check; flatness wave height check.
Surface and Microstructure Analysis: Metallographic microscope to inspect grain size uniformity and check for non-metallic inclusions.
Packaging Inspection: Verification of rust preventative oil coating coverage and waterproof packaging integrity before container sealing.
Global Export and Logistics Capability
We provide professional, risk-free export services for global B2B procurement to help clients navigate complex international trade landscapes:
Anti-Dumping and Customs Consultation: We assist in optimizing import tariffs and preparing specific customs clearance documents to minimize financial risks.
Customized Seaworthy Packaging: Multi-layer moisture-proof packaging, VCI (Volatile Corrosion Inhibitor) paper wrapping, heavy-duty steel strapping, and fumigated wooden pallets to survive long ocean voyages.
Container Loading Optimization: Customized container stuffing plans (using 20GP/40GP efficiently) to maximize weight capacity and prevent shipping damage.
Traceable Logistics: Real-time updates from factory production schedules to container dispatching and shipping vessel tracking.
Why Work With Us?
Proven Technical Expertise: We employ material engineers with over 15 years of steel production experience to help you select the exact grade and temper for your application.
Guaranteed Material Consistency: Batch-to-batch stability ensures that your high-speed stamping dies do not suffer unexpected wear or breakage.
Flexible Order Volume (Low MOQs for Trial Orders): We support trial orders and small-batch customization for prototyping and initial product testing.
Proactive After-Sales Technical Support: In the rare event of processing issues, our engineers provide rapid technical assistance and material adjustment solutions.
Packaging and Shipment
To ensure rust-free and zero-damage delivery, our steel strips are packed according to international maritime standards:
Rust-preventative oil application on strip surfaces.
Inner plastic film + VCI anti-rust paper wrap.
Steel protective edge rings + outer galvanized steel sheet wrap.
Heavy-duty steel banding on sturdy wooden pallets (Eye-to-Sky or Eye-to-Wall orientation based on handling equipment).
Desiccants placed inside each package to prevent ocean condensation.
FAQ
