Use of Polyester Lifting Slings in Logistics and Transportation

I. Typical Application Scenarios

1. Container Handling

   • Used to lift standard containers (20/40 feet) by securing them through the corner castings (top or bottom) with slings, combined with cranes or straddle carriers for stacking, loading, or unloading.

   • Advantage: Soft polyester material prevents scratches on container coatings compared to metal slings.

2. Heavy Equipment Transport

   • Lifting port machinery (e.g., forklifts, reach stackers), industrial equipment, or oversized cargo (e.g., wind turbine blades, steel structures).

   • Method: Multi-leg slings (e.g., 4-leg configurations) distribute load evenly to ensure balance and stability.

3. Bulk and Irregular Cargo

   • Securing irregularly shaped items (e.g., pipes, steel coils) by wrapping the sling around the cargo to prevent slippage.

II. Usage Steps and Guidelines

1. Select the Appropriate Sling

   • Choose sling type (single, double, or multi-leg) and specifications (length, width, Working Load Limit/WLL) based on cargo weight and shape.

   • Example: For a 30-ton container, use a 4-leg sling with a total WLL ≥ 30 tons, ensuring equal load distribution per leg.

2. Inspect the Sling Condition

   • Check for cuts, abrasions, chemical corrosion, or heat damage before use. Ensure labels (WLL, manufacturing date, etc.) are legible.

3. Secure the Cargo Properly

   • Containers: Thread slings through ISO-standard corner castings and connect to hooks or shackles.

   • Bulk Cargo: Use a choke or basket hitch with edge protectors/padding to shield slings from sharp edges.

   • Maintain safe sling angles (recommended ≤ 90°) to avoid overloading.

4. Connect to Lifting Equipment

   • Attach sling ends to crane hooks or shackles, ensuring all connections are locked and secure.

5. Lift and Move Smoothly

   • Lift gradually to check balance; avoid sudden stops or swings. Keep personnel clear of suspended loads.

6. Unloading and Storage

   • Inspect slings after use, clean if necessary, and store in a dry, ventilated area away from UV exposure or chemicals.

III. Safety Precautions

1. Never Exceed WLL: Account for dynamic forces (e.g., acceleration, swinging).

2. Environmental Adaptability:

   • Avoid prolonged exposure to strong acids/alkalis, high temperatures (>100°C), or UV radiation.

   • Dry slings thoroughly after use in humid conditions to prevent mold.

3. Edge Protection: Use wear sleeves or padding when contacting sharp edges.

4. Operator Training: Ensure personnel understand sling properties, rigging techniques, and emergency protocols.