Stainless 316 Calvanize Anchor Chain with Iacs Certificate for Marine Lifting and Mooring and Offshore

1. Core Material & Dual Protection: 316 Stainless Steel + Galvanization

Stainless Steel 316: The Gold Standard for Marine Corrosion Resistance

• Superior Saltwater Resistance: The addition of molybdenum creates a dense oxide layer that resists pitting, crevice corrosion, and general degradation caused by prolonged exposure to seawater, salt spray, and marine humidity—critical for offshore operations where chains may remain submerged for extended periods.
• Chemical Tolerance: Withstands exposure to harsh offshore chemicals (e.g., drilling fluids, seawater treatment additives, and fuel residues) without compromising structural integrity, eliminating the risk of material weakening from chemical reactions.
• High Tensile Strength: Maintains exceptional tensile strength (minimum 800 MPa yield strength) and ductility, even in extreme temperatures, ensuring it can handle heavy lifting and mooring loads without brittle fracture.

Hot-Dip Galvanization: Double the Protection

• Barrier Against Environmental Damage: The zinc coating acts as a sacrificial layer, absorbing corrosion before it reaches the underlying stainless steel—extending the chain’s service life by 2–3x compared to ungalvanized 316 stainless steel chains.
• Abrasion Resistance: The galvanized layer adds surface hardness, reducing wear from contact with seabed rocks, offshore platform structures, or lifting hardware (e.g., hooks, shackles).
• Low Maintenance: Eliminates the need for frequent anti-corrosion treatments (e.g., paint, grease) — simply rinse with freshwater after use to remove salt residue, lowering long-term operational costs.
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2. IACS Certification: Global Compliance & Reliability

• Adherence to International Standards: The chain meets strict IACS requirements for material quality, manufacturing processes, and performance—including ISO 1704 (for anchor chains) and IACS UR S27 (for offshore lifting equipment).
• Rigorous Third-Party Testing: Every batch undergoes independent testing by IACS-accredited laboratories, covering:
  • Tensile strength and breaking load verification (minimum breaking load varies by chain size, from 50 kN for 20mm diameter to 500 kN for 60mm diameter).
  • Fatigue resistance testing (10,000+ load cycles to simulate long-term offshore use).
  • Corrosion resistance testing (salt spray exposure for 1,000+ hours to confirm dual-protection effectiveness).
• Global Acceptance: IACS certification ensures the chain complies with maritime regulations in all international waters, eliminating barriers to use for vessels operating across global trade routes or offshore projects in diverse regions.
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3. Design & Performance for Marine Lifting, Mooring & Offshore

Stud Link Structure: Optimized for Heavy Loads

• Uniform Load Distribution: The stud prevents link deformation under heavy loads, ensuring tension is spread evenly across each link—reducing stress concentration and minimizing the risk of link failure.
• Stability in Dynamic Conditions: Resists "kinking" or "bending" during rough seas or sudden load shifts (e.g., during offshore lifting of cargo or mooring in high winds), maintaining structural stability when it matters most.
• Compatibility with Marine Hardware: Designed to fit standard marine lifting and mooring equipment, including:
  • Lifting hooks, shackles, and winches (rated for IACS-certified chains).
  • Mooring bollards, cleats, and hawse pipes on commercial ships and offshore platforms.
  • Anchor windlasses and chain stoppers for vessel anchoring.
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Size Range for Diverse Applications

• 20mm–30mm: Ideal for small-to-mid offshore vessels (e.g., supply boats, patrol boats) — used for light lifting (cargo up to 5 tons) and secondary mooring.
• 35mm–50mm: Suitable for large commercial ships (e.g., tankers, bulk carriers) and offshore platforms — used for primary mooring, lifting of heavy equipment (10–30 tons), and securing floating structures.
• 55mm–60mm: Engineered for heavy-duty offshore projects (e.g., deep-sea drilling rigs, wind farm foundations) — used for ultra-heavy lifting (30–50 tons) and permanent mooring of large offshore structures.
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4. Application Scope: Marine Lifting, Mooring & Offshore

1. Marine Lifting

• Lifting of cargo, equipment, or supplies onto/offshore vessels (e.g., containers, spare parts, fishing nets).
• Lifting of subsea equipment (e.g., underwater sensors, diving bells) for offshore maintenance or research.
• Compatible with both hydraulic and electric lifting systems, with IACS certification ensuring safe operation at rated loads.

2. Vessel Mooring

• Primary and secondary mooring of commercial ships (tankers, container ships, bulk carriers) at ports, terminals, or offshore anchorages.
• Mooring of offshore support vessels (OSVs) to platforms or wind turbines during resupply or maintenance.
• Resistant to the dynamic tensions of mooring in rough seas, with dual protection ensuring longevity in permanent mooring setups.

3. Offshore Infrastructure

• Securing offshore platforms (oil rigs, wind turbines) to seabed foundations.
• Anchoring floating production storage and offloading (FPSO) units and floating wind farms.
• Securing subsea pipelines or cables to prevent shifting in strong currents.

5. Quality Assurance & Packaging

Rigorous In-House & Third-Party Inspection

• Material Verification: Each batch of 316 stainless steel is tested for chemical composition (via 光谱分析 /spectroscopy) to ensure compliance with 316 grade standards.
• Dimensional Checks: Link diameter, pitch, and stud placement are inspected to meet IACS tolerances, ensuring uniformity and compatibility with hardware.
• Galvanization Quality: Coating thickness (minimum 85μm) and adhesion are tested to confirm no gaps or peeling—critical for long-term corrosion resistance.

Secure, Marine-Grade Packaging

• Bulk Orders: Packaged in seawater-resistant steel drums or wooden crates (treated to prevent rot) with internal bracing to prevent chain shifting during transit.
• Custom Lengths: Available in standard lengths (50m, 100m, 200m) or custom-cut lengths (minimum 100m for bulk orders), with each length marked with diameter, IACS certification number, and batch number for traceability.
• Transport Protection: Coated with a temporary anti-rust oil (easily removable) for long-distance sea freight, ensuring the chain arrives in pristine condition.

6. Long-Term Value & Safety

• Extended Service Life: The 316 stainless steel + galvanization combination delivers a service life of 10–15 years in offshore environments—significantly longer than standard carbon steel or ungalvanized stainless steel chains.
• Safety-Centric Design: Clear marking of working load limit (WLL) and minimum breaking load (MBL) on each chain segment prevents overloading, while IACS certification guarantees compliance with global safety regulations.
• Cost Efficiency: Reduced maintenance needs and long service life lower total cost of ownership, making it a cost-effective choice for long-term marine and offshore projects.