Open Link Anchor Chains

Open Link Anchor Chains

Certificate: CCS, GL and BV certificate.
Delivery Time: 15days
Place of Origin: China
Packing Details: Export standard packaging.

Category:

Grade 3 (BM3) Open Link Anchor Chains – Lightweight Marine Solution

Specialized Design for Specific Applications

Our Grade 3 Open Link Anchor Chains (also called BM3 in China) offer a lightweight alternative to traditional stud link chains, featuring:

  • 15-20% weight reduction for easier handling

  • Compatibility with larger shackles without end links

  • Cost-effective solution for non-critical mooring

*Note: While offering handling advantages, open link chains have approximately 25-30% lower tensile strength than equivalent stud link chains.*

Technical Specifications

Parameter Specification
Chain Type Studless (Open) Link
Grade Grade 3 (BM3)
Material High-strength carbon steel
Diameter 12.5mm – 120mm
Finish Hot-dip galvanized or painted
Certificates CCS, ABS, LR, DNV, NK

Manufacturing Process – Precision Engineering

  1. Material Selection

    • Rigorous inspection of steel rods (chemical composition/mechanical properties)

  2. Cutting & Bending

    • Precision cutting to required lengths

    • CNC bending for consistent U-shape formation

  3. Welding & Finishing

    • Flash butt welding for maximum joint strength

    • Automated burr removal for smooth surfaces

  4. Quality Assurance

    • Magnetic Particle Testing: Detects surface defects

    • Ultrasonic Testing: Verifies internal integrity

    • Tension Testing: Confirms load capacity (2x working load)

  5. Certification

    • Batch testing documentation

    • Classification society approval

Parameters:
Proof Test Load (KN) Breaking Test Load (KN) Nominal Diameter (mm) Weight (kg/27.5m)
92.42 184.83 16 139.43
110.55 221.1 17.5 178.35
130.32 260.64 19 217.68
151.7 303.42 20.5 229.14
174.4 349.4 22 264.49
207.9 415.8 24 341.82
244 488 26 369.94
283 566 28 427.04
324 649.8 30 490.98
369.6 739.3 32 559.65
417.3 834.6 34 671.52
467.8 935.7 36 707.85
521.3 1042.5 38 788.98
577.6 1155.2 40 869.36
636.8 1273.6 42 959.3
698.9 1398 44 1111.25
763.9 1527.8 46 1152.07
831.7 1663.5 48 1256.26
902.5 1805 50 1360.41
976.14 1952.28 52 1485.61
1052.68 2105.36 54 1648.08
1132.1 2264.2 56 1715.97
1214.4 2428.8 58 1844.5
1299.6 2599.2 60 1973.29
1387.68 2775.36 62 2101.56
1478.66 2957.32 64 2298.47
1572.52 3145.04 66 2398.1
1669.26 3338.52 68 2522.88
1768.9 3537.8 70 2697.65

The description/sizes may be different with goods, please check with us when order.

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