How to Read a Webbing Sling Label: A Practical Guide for Safe Lifting
Jul 13, 2026
When preparing for a lifting operation, most people pay attention to the condition of the sling itself. They look for cuts, frayed edges, or signs of wear. However, one small detail is often overlooked—the label.
A webbing sling label contains essential information about the sling, including its lifting capacity, material, manufacturer, and applicable standards. Reading this information correctly helps ensure the right sling is selected for the job and reduces the risk of accidents caused by overloading or misuse.
Whether you're new to lifting equipment or responsible for workplace safety, understanding a webbing sling label is a basic but important skill.
Why the Label Matters
The label is more than a product tag. It serves as the sling's identity throughout its service life.
Before every lift, operators should be able to confirm:
The sling's Working Load Limit (WLL)
The lifting method being used
The applicable safety standard
The manufacturer's information
Whether the sling is still suitable for use
If the label is missing or cannot be read, many safety regulations require the sling to be removed from service because its specifications can no longer be verified.
What Information Is Usually Printed on a Webbing Sling Label?
Although different manufacturers may use slightly different layouts, most webbing sling labels include the following information.
Working Load Limit (WLL)
This is probably the most important number on the label.
The Working Load Limit tells you the maximum load the sling can safely lift under specific conditions. Depending on how the sling is used, the allowable load may change.
For example, the capacity for a basket hitch is often higher than for a straight vertical lift, while a choker hitch usually reduces the lifting capacity.
Always check the lifting method before relying on the WLL shown on the label.
Sling Length
The label also indicates the effective working length of the sling.
Using a sling that is too short may create excessive lifting angles, while an unnecessarily long sling can make load control more difficult.
Selecting the proper length improves both efficiency and safety.
Material
Most flat webbing slings are manufactured from polyester.
Knowing the material helps users understand the sling's performance characteristics, including resistance to moisture, stretching behavior, and chemical compatibility.
For example, polyester performs well in many industrial environments but should not be exposed to certain strong chemicals.
Safety Standard
Quality manufacturers clearly state the standard used during production.
One of the most common standards is EN 1492-1, which specifies requirements for flat woven webbing slings made from man-made fibers.
Checking the standard gives users additional confidence that the sling has been manufactured according to recognized safety requirements.
Manufacturer Information
A complete label usually includes the manufacturer's name or trademark.
This information makes product traceability easier and allows customers to verify technical specifications or request replacement products when necessary.
Serial or Batch Number
Many manufacturers assign a unique identification number to each production batch.
This number is useful for quality control, inspection records, and product traceability throughout the sling's service life.
Understanding Webbing Sling Color Codes
Many people assume the sling color represents quality, but that's not its purpose.
For slings manufactured according to EN 1492-1, colors are commonly used to indicate the Working Load Limit.
Even so, operators should never rely on color alone. The label always provides the most accurate and complete information.
Inspect the Label Before Every Lift
Checking the label only takes a few seconds but can prevent serious mistakes.
Before lifting, confirm that:
The label is securely attached.
All information is clearly readable.
The Working Load Limit matches the load.
The sling has no visible damage.
The inspection requirements have been met.
If the label is torn, faded, or missing, the sling should not be used until its identification can be verified.
Common Mistakes to Avoid
Even experienced operators sometimes overlook simple details.
Some of the most common mistakes include:
Using a sling with an unreadable label.
Assuming all slings with the same color have identical capacities.
Ignoring the reduction in capacity caused by different hitch configurations.
Using damaged slings simply because the webbing appears intact.
These small mistakes can lead to unnecessary risks during lifting operations.
Choosing Reliable Webbing Slings
A high-quality sling begins with high-quality manufacturing.
When selecting a supplier, look for products that comply with international standards, provide durable labels, and offer complete product traceability.
At Nanjing D.L.T Sling Co., Ltd., every webbing sling is manufactured under strict quality control and supplied with clear identification labels showing the essential lifting information. Our products comply with EN 1492-1 and are available in a wide range of capacities and sizes for industrial lifting applications worldwide.
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