Premium 304/316L Stainless Steel Coil | Mirror Finish Durability

Product Specifications

Comprehensive technical details for engineers and industrial buyers

Key Properties & Performance

1. Tensile Strength & Bendability

Our stainless steel coil tubing exhibits exceptional tensile strength (515–720 MPa for 304 and 485–620 MPa for 316L), ensuring structural integrity under high-stress conditions. The cold-rolled process enhances ductility, allowing bends up to 180° without cracking, making it ideal for stainless steel coiled pipe systems requiring tight radii.

2. Corrosion Resistance

The chromium-nickel-molybdenum alloy matrix forms a self-repairing passive oxide layer, resisting pitting, crevice corrosion, and chloride exposure (critical for marine or chemical environments). 316L’s added molybdenum (2–3%) provides superior resistance to sulfuric acid and saltwater.

3. Surface Finish & Aesthetics

Available in #8 mirror finish (reflectivity >90%), our coils meet architectural and decorative demands. Precision polishing eliminates micro-scratches, ensuring hygienic surfaces for food processing or medical stainless steel coiled tube applications.

4. Weight Calculation

Use the formula:
$\text{Weight (kg)}=\text{Thickness (mm)}\times \text{Width (m)}\times \text{Length (m)}\times 7.93(\text{Density})$
Example: A 1.5mm x 1219mm x 1000mm coil weighs ≈14.5 kg.

Why Stainless Steel Rusts?

Understanding material limitations for better maintenance
Despite its name, stainless steel can corrode under specific conditions:

• Electrochemical Corrosion: Contact with carbon steel tools or debris creates galvanic cells, accelerating oxidation.
• Chloride Exposure: High salinity environments (e.g., coastal areas) degrade the passive layer, causing pitting.
• Mechanical Damage: Scratches or abrasions expose raw metal to oxygen, initiating rust.
• Chemical Contamination: Organic acids (food residues) or industrial pollutants (sulfides) erode the oxide film.
• Improper Welding: Sensitization at weld zones reduces chromium content, increasing susceptibility.

Prevention Tips:

• Clean regularly with pH-neutral detergents.
• Avoid prolonged contact with carbon steel.
• Specify 316L for high-humidity or chemical exposure.

Identification & Traceability

• Grade Marking: Laser-etched with ASTM/EN standards, heat number, and mill code.
• Certification: MTCs include ISO 9001, RoHS, and third-party inspection reports.
• Packaging: Seaworthy wooden crates or corrosion-resistant steel straps.

Applications

Our stainless steel coil tubing and sheets are trusted in:

• Chemical Processing: Reactor linings, heat exchangers.
• Architecture: Elevator panels, PVD-coated decorative walls.
• Medical: Surgical tools, sterile equipment.
• Food & Beverage: Brewery tanks, conveyor systems.
• Energy: Offshore oil rigs, nuclear coolant pipes.

Why Choose Us?

1. Certified Quality

   • ISO 9001, RoHS, and TUV-certified production.
   • Third-party inspected for chemical composition and mechanical properties.

2. Customization

   • Tailored dimensions (thickness: 0.03–6mm, width: 10–2000mm).
   • Special finishes (embossed, perforated, color-PVD).

3. Global Logistics

   • 20,000-ton annual capacity with 15–30-day lead time.
   • FOB/CIF terms supported for seamless shipping.

4. Technical Support

   • Free metallurgical consulting for weldability, corrosion prevention, and load design