Common slings and riggings, such as slings, shackles and hooks, will have basic inspection steps after each use to count the use status of the slings and riggings. Pu Tai takes common slings and riggings as an example to talk about the main aspects of the use status.

camisole

The webbing (including protective sleeve) is severely worn, perforated, cut and torn

The bearing joint is cracked and the suture is worn off

Sling fiber softening, aging, elasticity decreasing and strength weakening

The fiber surface is rough and easy to peel off

Dead knot in sling

Excessive dot like looseness, corrosion, acid and alkali burning, thermal melting or scorching on the surface of the sling

Exposed warning line with red warning line sling

Shackle

Obvious permanent deformation or shaft pin can not rotate freely

The wear of any section of the buckle body and shaft pin reaches more than 10% of the original size

Crack at any part of shackle

Shackle cannot be locked

a hook

The wear or corrosion of the dangerous section reaches 10% of the original size

Plastic deformation of hook handle

The opening is increased by 10% compared with the original size

The torsion angle of hook body exceeds 10 °