Buoy Shackle Type A

The Buoy Shackle Type A is a specialized connecting component designed specifically for mooring buoys. Its defining characteristic is a dual-leg structure joined by a horizontal strut, forming a stable "A" shaped frame. This design not only effectively distributes mooring loads but also prevents chain entanglement or stress concentration under dynamic sea conditions, serving as a critical component for ensuring the long-term, stable operation of buoy systems.

Core Advantages & Key Selling Points

Structural Stability: The design—featuring two legs connected by a strut—enhances the overall structure's torsional resistance, ensuring it remains stable even when subjected to asymmetrical loads.

High-Strength Forging: The raw materials selected by CSAC Chain undergo multiple forging processes to ensure a dense internal grain structure, thereby enhancing impact toughness.

Exceptional Compatibility: Dimensions and specifications fully comply with international standards, allowing for seamless integration with standard Kenter Shackles and various grades of anchor chains.

Corrosion Resistance: Available with either Hot-dip Galvanizing or a high-performance black bituminous paint coating to withstand prolonged exposure to seawater corrosion.

Technical Specifications

Our production range for the Buoy Shackle Type A covers diameters from 40mm to 90mm. The following table lists parameters for some of our most commonly used specifications:

Applications & Case Studies

The Buoy Shackle Type A supplied by CSAC Chain is primarily utilized in the following scenarios:

Single Point Mooring (SPM): Connecting subsea manifolds to surface buoys.

Meteorological/Oceanographic Monitoring Buoys: Providing a reliable base connection for high-value monitoring equipment.

Deep-Sea Drilling Platform Auxiliary Mooring: Ensuring the safety of temporary mooring systems under complex sea conditions.

Real-World Case Study: In 2024, we supplied a complete batch of 60mm Buoy Shackle Type A units for an offshore meteorological buoy project in Southeast Asia. After enduring multiple severe tropical cyclones, the system connections exhibited no significant signs of metal fatigue or structural deformation; this resilience was attributed to the stable Type A frame design, which effectively mitigated the impact of alternating loads.

Certification & Quality Assurance

Quality is the lifeline of Zhoushan Zhongnan Anchor Chain.

Authoritative Certifications: We support certification from the nine major classification societies: CCS, BV, DNV, ABS, NK, LR, RS, KR, and RINA.

Comprehensive Quality Control: From the chemical analysis of raw materials to the tensile testing of finished products (including MT, UT, and low-temperature impact testing), every single product is assigned a unique serial number to ensure full lifecycle traceability.

FAQ

Q: What are the main differences between Type A and Type B Buoy Shackles?

A: The Type A Buoy Shackle typically features a more pronounced "A-shaped" structure and a crossbeam support, offering superior structural stability when handling specific rotational tensile forces.

Q: What is your maximum hardness standard?

A: We can tailor our heat treatment processes to meet specific client requirements, ensuring an optimal balance between hardness and toughness while complying with the mechanical property requirements of Grade 3 or higher.

Samples, Inspection Support, & Warranty 

Sample Support: Raw material test blocks or small-scale samples can be provided upon request.

Warranty Period: The standard warranty period is 18 months from the date of shipment or 12 months from the date of installation (whichever occurs first).

Inspection: We support on-site inspections and random sampling by third-party agencies (e.g., SGS, BV).

Customization & Manufacturing Process 

Every Type A Buoy Shackle undergoes a rigorous manufacturing process:

Raw Material Selection: Strict selection of high-quality alloy steel.

Precision Forging: Die forging techniques ensure dimensional consistency.

Patented Heat Treatment: Utilization of our proprietary control system to optimize material microstructure and properties.

Surface Treatment: Sandblasting for rust removal, followed by protective coating/painting.

Final Inspection & Packaging: Dimensional measurements are taken, followed by verification load testing.