Classification of Rigging Hardware Links

1. By Structure Type

- Round Link: Integral circular design without opening, used for fixed connection between chains or chains and other riggings.

- Open Link: Equipped with openable buckle for quick installation and disassembly, suitable for temporary connections or frequently adjusted scenarios.

- Double Link: Two circular rings connected, used for branch connection of multiple chains or riggings to disperse load.

2. By Material

- Carbon Steel Link: High strength, low cost, applicable for heavy-load scenarios (e.g., port hoisting), requiring regular anti-rust treatment.

- Stainless Steel Link (304/316 grade): Corrosion-resistant, suitable for humid/corrosive environments like marine and chemical industries.

- Alloy Steel Link: High temperature resistance and fatigue resistance, used for high-temperature operations or long-term heavy-load working conditions (e.g., steel mills, mines).

3. By Application

- Chain Connecting Link: Specifically designed for chain splicing (e.g., lifting chain extension), must match chain specifications (pitch, diameter).

- Rigging Connecting Link: Used for transitional connection between steel wire ropes/slings and hooks/shackles, compatible with various rigging types.

Core Application Scenarios

- Ports & Shipping: Connect lifting chains and steel wire ropes for container hoisting, cargo loading/unloading, and marine anchor chain splicing.

- Construction: Connect protective chains during scaffolding erection, or used in rigging combinations for hoisting steel bars and building materials via tower cranes.

- Mining Machinery: Connect mining lifting chains for ore transportation and equipment hoisting, resistant to heavy loads and dusty environments.

- Logistics & Warehousing: Cooperate with forklifts and cranes to connect pallets and riggings, enabling cargo stacking and transfer.

- Marine Engineering: Stainless steel type used for rigging fixation and fishing net connection in offshore platforms (corrosion-resistant requirement).

Key Precautions

- Specification Matching: Select links consistent with chain/rigging specifications (diameter, rated load); overloading is strictly prohibited (may cause fracture).

- Material Adaptation: Choose materials based on environment (e.g., stainless steel for marine environments); carbon steel products require regular anti-rust oil coating to avoid damp rust.

- Inspection & Maintenance: Check for deformation, cracks, and wear (e.g., loose buckles on open links) before use; replace damaged products immediately.

- Correct Installation: Ensure open link buckles are fully closed and locked; round links must be fixed by welding or bolts to prevent loosening.

- Environmental Restrictions: Avoid misuse in high-temperature (exceeding material tolerance) or strong corrosive environments; select special high-temperature/corrosion-resistant models for specific working conditions.

- Scrap Standard: Immediately scrap links with permanent deformation, cracks, or wear exceeding 10% of diameter; repair and reuse are prohibited.