High-Quality 316L Stainless Steel Coil | Industrial Mirror Finish

Product Overview

Our high-quality 316L Stainless Steel Coil is engineered for demanding industrial applications requiring exceptional corrosion resistance, durability, and aesthetic precision. With a mirror finish achieved through advanced cold-rolling and electropolishing processes, this coil is ideal for stainless steel cooling coil systems, marine equipment, chemical processing, and architectural projects. As a leading china stainless steel coil supplier, we ensure compliance with global standards while offering competitive pricing and customization.

Technical Specifications

Key Performance Attributes

Tensile & Bending Strength

The 316L stainless steel coil delivers a tensile strength of ≥485 MPa and yield strength of ≥170 MPa, making it suitable for high-stress environments like stainless steel cooling coil heat exchangers and offshore platforms. Its austenitic structure ensures excellent ductility (≥40% elongation), enabling complex forming without cracking.

Weight Calculation

To calculate coil weight:
Weight (kg) = Thickness (mm) × Width (m) × Length (m) × Density (7.98 g/cm³)
Example: A 1.5mm × 1219mm × 50m coil weighs:
1.5 × 1.219 × 50 × 7.98 ≈ 731 kg

Why Does Stainless Steel Rust?

While 316L is highly corrosion-resistant, rust can occur under extreme conditions:

1. Chloride Exposure: Prolonged contact with seawater or de-icing salts degrades the chromium oxide layer.
2. Mechanical Damage: Scratches during fabrication or handling expose raw metal to oxidation.
3. Galvanic Corrosion: Contact with dissimilar metals (e.g., carbon steel) in electrolyte-rich environments.
4. High-Temperature Oxidation: Exposure above 870°C accelerates scaling.

Regular maintenance and selecting coil stainless steel with proper molybdenum content (2-3%) mitigate these risks.

Identification & Traceability

Each coil is laser-marked with:

• Grade: 316L/1.4404
• Batch Code: Linked to MTC (Mill Test Certificate) for full traceability.
• Surface Finish: e.g., 2B (Cold Rolled Matte), Mirror.

Applications

• Heat Exchangers: Stainless steel cooling coil systems for industrial and marine use.
• Chemical Processing: Tanks, valves, and piping resistant to acidic and chloride-rich environments.
• Architectural Cladding: Mirror-finished façades and interior design elements.
• Medical Equipment: Hypoallergenic surfaces compliant with ISO 13485 standards.

Manufacturing Excellence

Surface Finishing Process

Our mirror finish is achieved through:

1. Cold Rolling: Precision reduction for uniform thickness (±0.01mm tolerance).
2. Bright Annealing (BA): Heat treatment in hydrogen-nitrogen atmospheres to eliminate oxidation.
3. Electropolishing: Micro-imperfection removal for a reflective, corrosion-resistant surface.

Quality Assurance

• Material Sourcing: Sourced from TISCO/BAOSTEEL with ISO 9001 certification.
• Testing: Salt spray tests (1,000+ hours) and spectrometer analysis for alloy integrity.

Why Choose Our Stainless Steel Coils?

1. Global Compliance: Dual ASTM/EN certifications for seamless cross-border projects.
2. Customization: Slit-to-width (±0.1mm tolerance) and rewinding services for niche applications.
3. Rapid Delivery: 7–15 days lead time with PVC-coated packaging to prevent scratches.
4. Sustainability: 100% recyclable material with SGS-certified eco-friendly processes.
5. Technical Support: 24/7 engineering guidance on fabrication and corrosion prevention.