Manicu is a kind of sling, which is widely used in various industries such as electric power, metallurgy, petroleum, machinery, railway, chemical industry, port, mining, construction and so on. Manicus are the same as other slings. They have their own set of application and invalidation specifications. Note for the use of catenas: The catenas must correctly support the load.
Vale à dì, a forza di l'effettu duveria esse longu l'assi di a linea centrale di u grillu per impedisce a curvatura è carichi instabili, per ùn parlà di u sovraccaricu. L'usu è l'invalidazione di ucatena should be rolled flexibly in the lifting hole, and no jamming is allowed. Phenomenon: The catena body must not bear the effect of lateral bending moment, that is, the effect bearing capacity should be in the plane of the body.

L'angulu massimu inclusu trà i dui rigging riggiu purtatu da ucatena cannot be greater than 120 degrees. The use and invalidation of catenas The catena is that when the wire rope sling is used as a binding sling, the horizontal pin part of the catena should be connected with the keyhole of the wire rope sling. The appearance is when the rigging is lifted.

U cunflittu trà u filu è ucatena causes the catena to roll, and there is a risk of detachment. The use and invalidation specifications of the catena. The pin is deformed up to 5% of the original size; the bolt is necrotic or slippery.