Qingdao Haosail Machinery Co., Ltd.

How to Inspect Webbing Slings Before Every Lift: A 5-Step Safety Checklist

Every lifting operation starts with one important step—inspection.

Whether you're working on a construction site, in a warehouse, at a manufacturing plant, or in a shipping yard, inspecting your webbing sling before every lift is essential. Even a high-quality polyester sling can become unsafe if it has been overloaded, cut, exposed to chemicals, or worn through repeated use.

A visual inspection takes only a few minutes, but it can prevent equipment damage, load loss, and workplace injuries.

Here is a practical five-step checklist that should become part of every lifting routine.

Step 1: Check the Webbing for Cuts, Tears, and Abrasion

Begin by examining the entire length of the sling.

Look carefully for:

• Cuts or punctures

• Frayed edges

• Abrasion caused by rough surfaces

• Broken fibers

• Burn marks or melted sections

Even small cuts can reduce the sling's lifting capacity. If the fibers are visibly damaged, the sling should be removed from service immediately.

Step 2: Inspect the Stitching

The stitched eyes and reinforced seams carry significant loads during lifting.

Check whether the stitching is:

• Loose

• Broken

• Pulled apart

• Uneven

• Missing in any section

Damaged stitching weakens the sling structure and increases the risk of failure under load.

Step 3: Verify the Identification Label

Every certified webbing sling should have a clear identification label.

Confirm that the label shows:

• Working Load Limit 

• Material

• Sling length

• Safety standard

• Manufacturer information

If the label is missing or unreadable, the sling should not be used because its lifting capacity cannot be verified.

Step 4: Look for Chemical or Heat Damage

Polyester webbing slings are resistant to many working environments, but they can still be damaged by chemicals and excessive temperatures.

Signs of damage include:

• Discoloration

• Hard or brittle areas

• Soft or sticky surfaces

• Melted fibers

• Chemical stains

If the sling has been exposed to strong acids, alkalis, or extreme heat, it should be inspected carefully or replaced.

Step 5: Inspect the End Fittings and Overall Shape

If the sling includes metal fittings, examine them for:

• Cracks

• Deformation

• Corrosion

• Sharp edges

• Excessive wear

Also check that the sling lies flat without twists or knots.

A twisted sling cannot distribute the load evenly and may significantly reduce lifting performance.

Final Thoughts

Routine inspections are one of the simplest and most effective ways to improve lifting safety. Spending just a few minutes checking a webbing sling before each use can prevent accidents, reduce equipment downtime, and extend the service life of your lifting equipment.

At Haosail Rigging, we manufacture high-quality polyester webbing slings designed for demanding lifting applications. Every sling is produced under strict quality control and tested to meet international standards, helping customers lift safely and confidently.