⛓️ Slings, Rigging & Wire Rope
Chain Sling Inspection & Certification in Saudi Arabia
A chain sling is made from welded alloy steel links, normally Grade 80 or Grade 100, joined to a master link at the top and fitted with hooks or other end fittings on each leg. Chain is chosen for rough handling of steel plate, castings, machinery and hot or abrasive loads, which makes it common in Saudi fabrication yards, refineries and heavy industrial sites. The strength of a chain depends on consistent link geometry, and wear, stretch and nicks quietly shorten its safe life, so an independent examination that includes measurement is worth far more than a glance.
What we inspect on a chain sling
- ✓Link wear at the bearing points, measured against the minimum link diameter allowed by the standard or manufacturer
- ✓Chain stretch measured over a gauge length of several links and compared with the manufacturer's elongation limit
- ✓Nicks, gouges, cracks, bent or twisted links, and links that no longer articulate freely
- ✓Master link and coupling links for wear at the inside bearing area and for deformation
- ✓Hooks for throat opening, twist, latch operation and wear in the saddle
- ✓Evidence of heat exposure, weld spatter, chemical attack and any attempted repair or welding
- ✓Grade marking on the links and the identification tag showing WLL, grade, chain size and leg count
- ✓Shortening clutches or grab hooks, where fitted, for correct engagement and wear
Common defects we find
- ✓Links worn below the minimum permissible diameter, especially at link-to-link contact points
- ✓Elongated or stretched chain after overload or shock loading
- ✓Nicks, gouges and cracks from dragging chain over sharp edges or striking it against steel
- ✓Bent or twisted links from knotting the chain or bolting through a link
- ✓Missing grade marks or tags, or lower-grade chain mixed into a Grade 80 or Grade 100 sling
Risks of operating uncertified
- ✓Sudden failure of a damaged or overstretched link can release the load with little warning.
- ✓Heat damage or unauthorised repair welding can permanently reduce link strength without any visible deformation.
- ✓Shock loading and snatch lifts can overload a chain assembly that would be within its rated capacity under a smooth static lift.
Testing, standards & frequency
Load / performance test
Where required, a proof load test is typically applied at around twice the working load limit on new or repaired assemblies, depending on the standard, chain grade and client; chain already in service is usually assessed by measurement and visual examination rather than repeat proof loading.
Inspection interval
Typically at least annually by a competent person, with a visual check before each use, and more often where slings are used in severe service or the client specifies a six-monthly examination.
Standards referenced
- ASME B30.9 (Slings)
- EN 818-4 (Short link chain for lifting purposes - Chain slings, Grade 8)
- OSHA 29 CFR 1926.251 (Rigging equipment for material handling)
- Manufacturer specifications and load charts
Part of our Lifting Equipment Inspection & Load Testing service. You receive an inspection report, Certificate of Conformity and inspection tag for passing equipment.
Chain Sling inspection by city
Industries using this equipment
Related equipment
FAQs
Can a damaged chain sling be repaired by welding?＋
No. Welding alloy chain changes its heat treatment and can seriously weaken the link. Damaged links, master links or hooks should be replaced as certified components by the manufacturer or an authorised repairer, then re-tested and re-certified.
How do I know if a chain sling has stretched?＋
Measure a set number of links against the manufacturer's gauge length and compare the result with the allowable elongation. If the chain has stretched beyond the limit, or the links no longer sit freely against each other, take the sling out of service.