G80 Rigging Weld Lifting Master Link

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G80 Rigging Weld Lifting Master Link

The Rigging Master Link, also called the forged master link, is a key element in the rigging system. It is made up of a main ring and two or more sub - rings. The main ring is fully forged from high - strength alloy steel, ensuring top - notch strength and toughness. The sub - rings are welded to the main ring following strict procedures, guaranteeing reliable connections.It finds wide application in various industries. In industrial settings like mechanical manufacturing, metallurgy, and power generation, it connects components in hoisting machinery.

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Product Advantage

1. Enhanced Strength & Durability

High Load Capacity: Welded construction ensures superior strength, making it ideal for heavy-duty lifting.

Robust Material: Typically made from high-grade alloy steel, providing excellent resistance to wear, deformation, and fatigue.

2. Precision Welding for Reliability

Seamless Integrity: Precision welding eliminates weak points found in cast or forged links, reducing the risk of failure.

Consistent Quality: Automated welding processes ensure uniformity and reliability in every unit.

3. Safety & Compliance

Meets Industry Standards: Complies with ASME B30.9, OSHA, and other international safety regulations.

Rigorous Testing: Undergoes proof load testing, magnetic particle inspection (MPI), and ultrasonic testing (UT) to ensure safety.

4. Corrosion Resistance

Protective Coatings: Often available with galvanized, painted, or stainless steel finishes for corrosion resistance in harsh environments.

5. Wide Application Range

Suitable for construction, shipbuilding, mining, oil & gas, and industrial rigging where heavy lifting is required.

Product Parameters

Load Capacity (Working Load Limit – WLL)

Size (in/mm)	WLL (Tons)	WLL (kg/lbs)	Proof Load (Test Load)	Breaking Load (Min.)
0.5" (13mm)	2.5 tons	2,500 kg / 5,500 lbs	2 x WLL (~5 tons)	5 x WLL (~12.5 tons)
0.75" (19mm)	5 tons	5,000 kg / 11,000 lbs	2 x WLL (~10 tons)	5 x WLL (~25 tons)
1" (25mm)	8 tons	8,000 kg / 17,600 lbs	2 x WLL (~16 tons)	5 x WLL (~40 tons)
1.5" (38mm)	17 tons	17,000 kg / 37,400 lbs	2 x WLL (~34 tons)	5 x WLL (~85 tons)
2" (50mm)	30 tons	30,000 kg / 66,000 lbs	2 x WLL (~60 tons)	5 x WLL (~150 tons)

Product Applications

1. Construction & Heavy Civil Engineering

High-Rise Building Construction – Connects crane slings for lifting steel beams, precast concrete, and modular structures.
Bridge & Tunnel Projects – Used in suspension rigging for heavy segments.
Dam & Power Plant Construction – Handles massive loads like turbines and generators.

2. Marine & Offshore Operations

Shipbuilding & Repair – Lifts ship hull sections, engines, and propellers.
Oil Rigs & Floating Platforms – Secures heavy equipment during installation.
Port & Dock Cargo Handling – Connects spreader bars for container lifting.

3. Mining & Quarrying

Dragline & Excavator Rigging – Supports bucket and shovel assemblies.
Ore Processing Plants – Lifts crushers, conveyor systems, and heavy machinery.

5. Industrial Manufacturing & Heavy Machinery

Automotive & Aerospace – Handles large molds, presses, and aircraft components

Steel Mills & Foundries – Moves ladles, ingots, and rolling mill equipment.

6. Transportation & Logistics

Heavy Haulage & Rigging – Secures oversized loads on flatbed trailers.

Railway & Infrastructure – Lifts rail tracks, locomotives, and bridge sections.

7. Emergency & Disaster Recovery

Rescue & Salvage Operations – Used in wreckage lifting and collapsed structure recovery.

Military & Defense – Deployed in equipment transport and field engineering.

Product Operate Guide

1. Pre-Use Inspection

Before each lift, inspect the master link for:

✔ Cracks, bends, or deformations – Discard if damaged.

✔ Weld integrity – Check for cracks or defects in welded areas.

✔ Corrosion or wear – Replace if rust or excessive wear is present.

✔ Markings & WLL – Ensure the Working Load Limit (WLL) is legible and matches the rigging plan.

2. Proper Rigging Setup

A. Correct Connection Method

Shackle Attachment:Use a bow shackle or anchor shackle of appropriate size.

Ensure the pin is fully seated and secured (use a cotter pin or bolt lock).

Sling Attachment:Wire rope, chain slings, or synthetic slings must fit freely inside the master link.

Avoid sharp bends (sling angle affects load capacity).

3. Lifting Operation

✅ Lift Slowly & Smoothly – Avoid sudden jerks or shock loads.

✅ Monitor Load Angle – Keep sling angles ≥60° to prevent overloading.

✅ Never Exceed WLL – Account for dynamic forces (e.g., wind, movement).

4. Post-Use Handling & Storage

✔ Clean after use – Remove dirt, grease, or chemicals.
✔ Store in a dry place – Prevent rust (use anti-corrosion spray if needed).
✔ Regular inspections – Follow OSHA/ASME guidelines for periodic checks.

5. Emergency & Failure Response

If a crack or deformation is detected mid-lift:Stop operations immediately.

Lower the load safely and replace the master link.In case of accidental overloading:Remove from service and inspect for hidden damage.