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ALLOY GRADE
Chain slings provide excellent performance in harsh environments. When using chain for overhead lifting, an alloy grade, either grade 80 or 100, is recommended. Both are manufactured from special analysis alloy steel and engineered for a superior combination of strength and durability. Other grade chain and components can be appropriate for specific applications with unusual requirements.
It is critical that the fittings used for sling assembly be of like material. A sling identification tag with the size, grade, rated capacity, and reach is required by O.S.H.A. regulation.
Per A.N.S.I./A.S.M.E. B30.9 "Prior to use, all new and repaired chain and components of an alloy steel chain sling, either individually or as an assembly, shall be proof tested by the sling manufacturer or a qualified person."
TYPES OF CHAINS SLINGS
In describing the type, the following symbols should be used. If attachments are
other than standard, give detailed specifications.
First symbol (basic type):
S - Single chain sling
C - Single choker chain sling with a standard end link on each end, no hooks
D - Double branch chain sling
T - Triple branch chain sling
Q - Quadruple branch chain sling
Second symbol (type of master link or end link):
O - Oblong master link of standard dimensions
P - Pear shaped master link (available on request, not a standard item)
Third symbol (type of hook):
S - Sling hook
G - Grab hook
F - Foundry hook
L - Latchlok
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