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Since 2006 · China branch of Carl Stahl GmbH Germany [email protected] Tel +86-571-89936190 Ningbo consolidation warehouse
Solution

Inspection Testing And Certification

Testing is what separates a certified lifting product from a piece of steel that looks like one, and the test regime differs by product family.

Soft Slings

Incoming AA class polyester yarn is inspected, width, ply and stitch pattern are checked against the production drawing, and label content is verified against the order before sewing. Sample proof loading is applied to the declared safety factor and every sling is individually bagged with its CE declaration of conformity.

Grade 80 Rigging

Every hook, connecting link and master link is individually proof tested at 2.5 times the working load limit, fatigue tested at 1.5 times the working load limit for 20000 cycles, breakage tested on each branch and given 100 percent magnaflux crack detection. All load pins are 100 percent individually inspected and tested.

Chain

Grade 80 chain is proof tested at 2.5 times the working load limit with elongation at not less than 20 percent. Hoist chain passes heat treatment and proof test, and the product mark stamped on the chain carries the strength grade and the manufacturer seal.

Hoists And Blocks

Manual hoists receive a running test load before packing. LH type snatch blocks are given a 200 percent overload capacity test one by one before packing. Permanent lifting magnets have their break away force verified at not less than three times the rated capacity and each magnet ships with a test certificate and operating instructions.

Bulk Products

Ton bags receive 100 percent inspection of finished bags, and the products have passed the 6:1 qualification test of German LABORDATA according to ISO 21898. The supply is certified by SGS.

First Inspection And In Service Checks

A sling should be inspected before it enters service and at the interval required by local regulation. The label, the eyes or sleeve, the stitching and the body all need checking, and any sling with a cut, a chemical burn, a damaged eye or an unreadable label is withdrawn.

Process

How It Works Step By Step

Incoming material inspectionYarn, steel and fabric verified against certificates before production starts.
In process checksDimensions, stitch patterns, weld quality and heat treatment records checked during production.
Proof and overload testingApplied at the level the product family requires, individually where the standard calls for it.
Non destructive testing100 percent magnaflux crack detection on Grade 80 forged components.
Certificate issueCE declarations pack with the slings, and material and test certificates are issued when requested at the time of order.
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Knowledge

Related Articles

Knowledge

First inspection round sling

inspection round sling include appearance inspection,label and sewing inspection,Safety is first concern for the Carlstahl lifting

FAQ

Inspection Testing And Certification FAQ

Is every Grade 80 component tested or is it batch sampling?
Individually. Each piece is proof tested at 2.5 times the working load limit and given 100 percent magnaflux crack detection, and all load pins are 100 percent individually inspected and tested.
Are snatch blocks tested individually?
Yes, LH type blocks receive a 200 percent overload capacity test one by one before packing.
What comes with a permanent lifting magnet?
A test certificate and operating instructions with every magnet.
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