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Views: 0 Author: Site Editor Publish Time: 2026-08-05 Origin: Site
Before a webbing sling is put under load, inspect its identity, webbing, stitching, protective components, and fittings. Synthetic webbing can look generally clean while hiding a cut, a damaged seam, heat glazing, chemical attack, or an illegible identification tag that makes safe selection impossible. The inspection is not a formality completed after the rigging is attached; it is the point at which a hazardous sling is kept out of the lift. This article gives a practical visual and tactile check, explains why each defect matters, and shows how to act when the inspection result is uncertain.
Inspect the entire webbing sling and attachments before use or each shift, and inspect more often when service conditions require it.
Cuts, holes, snags, severe abrasion, melted areas, chemical damage, and damaged load-bearing stitching demand immediate attention.
A missing or unreadable sling identification tag prevents the rigger from confirming the correct rating and should not be ignored.
Do not make field repairs to load-bearing webbing, seams, or fittings.
If a defect is found, isolate and mark the sling so it cannot be returned to service by mistake.
A textile sling is flexible, so it follows the load and often passes around corners, under packers, and through chokers. That flexibility is an advantage, especially on surfaces that benefit from broad contact. It also means that damage can occur at many locations: along a fold, on the underside of a basket hitch, inside an eye, beneath a sleeve, or where a sling contacts hardware. Looking at only the most visible face will miss defects.
A good web sling inspection follows the same route every time. Lay the sling out where practical. Read its tag first. Run the webbing slowly through gloved hands and eyes from one end to the other. Turn it over. Open the eyes enough to inspect their inside surfaces. Move removable protection if the design allows it without altering the sling. Finally, inspect each hook, link, shackle, or other attachment used with the sling. The point is to create a repeatable habit rather than rely on a quick glance.
Inspection frequency must reflect the work. Routine use in a clean, controlled area is different from work around sharp fabrications, hot operations, abrasive concrete, acids, alkalis, marine contamination, or repeated choke hitches. The employer’s procedure, applicable regulations, and the manufacturer’s instructions set the inspection program. A competent person should also carry out periodic documented inspections at the required interval. Daily or pre-use checks do not replace those formal examinations, and a formal examination never replaces a pre-lift check.
The sling identification tag is a safety component. It enables the user to match the physical item to its working load limits, material, length, manufacturer, and configuration information. A webbing sling may appear similar to another sling in the rack, but a difference in construction, number of plies, fittings, or rating can change whether it is appropriate for the lift.
Confirm that the tag is present, attached, and legible. Check that the vertical, choker, and basket ratings match the intended arrangement. Check the stated material against the work environment. Check that any serial or traceability information required by the site record is available. If a tag cannot be read, do not try to infer its rating from its width, thickness, color, or an old label on a storage rack. Isolate it for review. A webbing sling selection guide can help procurement and users understand configurations, but it cannot restore missing product identity.
Look for broken yarns, cuts across the webbing, long tears, punctures, pulled loops, and snagged sections. Run gloved fingers lightly along the surface to find irregularities that are not obvious from a distance. Pay close attention to areas that bear on corners, pass through a choker, or sit against a hook or shackle. Inspect both faces and edges, because one side may have been protected during the lift while the opposite side rubbed against a load.
Any cut is a concern because it removes or weakens load-bearing fibres. A small visible defect can extend under tension or become worse when it is folded in a hitch. Do not trim loose yarns and decide that the problem is solved. Do not cover the area with tape, paint, a sleeve, or a temporary patch. Those actions can hide evidence while leaving the damaged fibres in the load path. Tag the sling out and have it assessed under the applicable manufacturer and site procedure.
Abrasion is often slower than a sudden cut, which makes it easy to normalize. The surface may look fuzzy, flattened, polished, or visibly thinner. Edges can become rounded or frayed. Repeated contact with rough castings, timber, concrete, unprotected plate edges, gritty floors, and dirty storage surfaces gradually removes or weakens fibres. A sling that has spent months in repetitive handling deserves a closer look than one used once in a clean lift.
Differentiate superficial surface disturbance from wear that affects the webbing’s integrity by following the manufacturer’s discard guidance and the competent person’s decision. Do not estimate remaining capacity by appearance. Webbing is engineered as a complete assembly; a local worn area can change how force is distributed. Better prevention includes using clean, correctly fitted wear pads or sleeves where they are compatible with the sling and lift, keeping the sling off the ground, and positioning it before load is applied rather than dragging it into place.
Synthetic webbing is vulnerable to heat. Look for melting, glazing, hard or brittle areas, fused fibres, charring, discoloration, weld spatter, and a change in texture. A heat-damaged section may feel stiff compared with the surrounding webbing. It may no longer stretch or distribute load as designed. Exposure can occur from hot load surfaces, cutting and welding, exhaust, steam, friction, or storage near a heat source.
Do not use a sling near temperatures outside the manufacturer’s stated range, and never assume that a surface is safe to touch because it looks cool. If the sling was exposed to hot work or a hot load, inspect it after the event even if no dramatic mark is visible. Keep textile slings out of weld-splatter zones and establish a clear separation between rigging storage and fabrication work. A protective sleeve is not a general authorization to use a synthetic sling around heat or sharp material.
The webbing material matters. Polyester, nylon, and other synthetic fibres do not respond identically to acids, alkalis, solvents, paint strippers, oils, cleaners, and other chemicals. The identification tag and manufacturer data help establish compatibility. Signs of chemical or ultraviolet damage can include fading, unusual discoloration, stiffness, brittleness, swelling, surface cracking, tackiness, or an unexpected change in feel.
If the sling contacts an unknown substance, do not rely on a visual wipe-down and return it to the rack. Quarantine it, identify the substance where possible, and seek competent technical advice. Cleaning can itself be harmful if it uses the wrong agent or process. The safest approach is to prevent contamination through controlled storage, clean lift areas, and separation from chemical processing or painting work. D.L.T Sling’s polyester webbing sling overview describes why material selection matters, but application-specific chemical compatibility must be confirmed before exposure.
On eye-and-eye or formed web slings, stitching can be critical to the assembly’s integrity. Examine the eyes, overlap areas, seams, and reinforcing sections for broken, worn, cut, loose, pulled, or damaged stitches. Look inside the eyes, where a hook, pin, or lifting point can rub repeatedly. Check that the eye is not forced over a hardware shape or diameter for which it was not intended.
Do not mistake decorative stitching, a protective cover seam, or a repair-looking patch for proof that the load-bearing construction is sound. Never add, remove, or restitch a load-bearing seam in the field. A loose thread may be an early warning, while a broken pattern of stitching can signal a serious loss of assembly strength. Mark the item out of service and have the manufacturer or qualified person decide its disposition.
When a sling includes fittings, inspect them for cracks, deformation, bending, twisting, gouges, sharp burrs, corrosion, excessive wear, damaged latches, or altered markings. Check that moving parts operate freely when the component is intended to move. A fitting can injure a sling as well as carry load: a sharp edge on a hook or a damaged shackle pin can cut webbing during tensioning.
Confirm compatibility, too. The sling eye must sit correctly in the hook or shackle. Avoid point loading, side loading, forced fit-up, and hardware that pinches the webbing. If the lift includes separate shackles, hooks, or lifting beams, their inspections and ratings are part of the same pre-lift decision. A sound sling paired with defective hardware is not a sound rigging system.
Use this sequence before committing to a lift. It helps users look beyond a single obvious defect.
Inspection area | Look for | Correct response if uncertain or defective |
|---|---|---|
Identification | Missing, illegible, altered, or detached tag | Do not guess capacity; isolate for evaluation |
Webbing faces and edges | Cuts, holes, tears, snags, broken yarns, severe abrasion | Remove from selection and mark out of service |
Texture and colour | Melted, glazed, charred, stiff, brittle, swollen, or contaminated areas | Quarantine and seek technical assessment |
Eyes and stitching | Broken, worn, loose, or cut load-bearing stitching | Do not field repair; isolate the sling |
Sleeves and pads | Hidden damage, displaced protection, abrasive debris | Inspect the underlying sling and correct protection |
Fittings | Cracks, bends, corrosion, gouges, sharp edges, latch problems | Reject the assembly until properly evaluated |
The safest response is immediate control. Stop selecting the sling for the lift. Tag it clearly, such as “Do Not Use,” and place it in a segregated quarantine location where another worker cannot pick it up during a rush. Record the defect according to the site system. Inform the designated supervisor or competent person, particularly if the issue may indicate a recurring problem with storage, load edges, rigging method, or chemical exposure.
Do not attempt temporary webbing repairs, tape wraps, heat sealing, unauthorized restitching, or improvised hardware modifications. Do not return an item to service based on a verbal assurance. If a manufacturer-authorized repair and proof-test process applies to a component, it must be controlled by qualified people and documented. Damaged webbing itself should not be treated as a casual repair job. The purpose of isolation is not to create paperwork; it is to prevent a known uncertainty from becoming a suspended-load failure.
NANJING D. L. T SLING Co., Ltd. offers webbing sling products for lifting applications, but every user should establish a documented inspection process suited to their work. The most valuable inspection is the one that causes a questionable sling to be removed before it is loaded.
Inspecting a webbing sling means checking much more than obvious cuts. Start with the identification tag, then examine the full webbing length, edges, eyes, stitches, sleeves, and fittings for abrasion, tears, heat effects, contamination, and deformation. Consider where the sling has been used and whether its service environment has changed. If the rating cannot be verified or the condition is doubtful, do not compensate with optimism or a quick repair. Isolate the sling, record the finding, and let the appropriate procedure determine the next step. That small pause is one of the strongest controls in safe lifting.
Inspect it before use or each shift as required by the employer’s procedure and applicable rules. More frequent inspection may be necessary in severe service, and periodic documented inspections should also be performed by a competent person.
Do not make that judgment from the apparent size of a cut. A cut affects load-bearing fibres and can worsen under tension. Remove the sling from selection and follow the approved evaluation procedure.
It can indicate heat or friction damage. Heat can change the fibre structure and strength, so isolate the sling rather than treating the mark as cosmetic.
No. Without a legible tag, the exact rating and identity cannot be verified. Do not estimate from color, width, or a similar-looking sling.
No. Sleeves reduce particular wear hazards when correctly selected and fitted, but they can conceal damage. Inspect the sling and sleeve together.
Do not trim, tape, or otherwise alter a sling to make it look serviceable. Loose or damaged yarns and stitching require assessment under the site and manufacturer procedure.
