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Links EN 1677-4

Components for slings - Safety - prEN 1677 for components for slings are:
Part 1: Forged steel components, Grade 10
Part 2: Forged steel lifting hooks with latch - Grade 10
Part 3: Forged steel self-locking hooks - Grade 10
Part 4: Links - Grade 10

Working Load Limit (WLL)
maximum mass that a link is authorized to sustain in general lifting service.

Manufacturing Proof Force (MPF)
force applied to the link during the manufacturing proof test.

Breaking Force (BF)

maximum force reached during the static tensile test of the link at the end of which the link fails to retain the load.

Master Link

link forming the upper terminal of a sling by means of which the sling is attached to the hook of a crane or other lifting machine.

Intermediate Master Link

link used to connect one or two legs of a sling to a master link.

Master Link Assembly

assembly consisting of a master link together with two intermediate master links.

Lower Terminal

link, hook or other device fitted at the end of a leg of a sling, remote from the master link or upper terminal.

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