Sling Lift and Rigging

Each chain links and chain components are tempered and quenched to get high strength and abrasion resistance for overhead lifting.To make chains fit properly with hooks or hoists also get each link calibrated before delivery. G80 chain can be used in any rigging application that requires a 30-80 grade chain. To identify class 80 slings and lifting chains, all chains are marked with embossed G80 on body. This do good for your checking during usage. As a reliable lifting equipment China supplier, the chain components are also completed through a rigorous inspection process and testing procedure to ensure that the end user gets a quality chain sling.

• Determine the load weight and be sure it’s within the rated capacity of the sling.

• Chose rigging slings that have suitable characteristics for the type of load, hitch and environment.

• Never use lifting slings exceeding its rated capacity. When using 2 leg or multi-leg slings, the load angle will affect the rated load. See load chart below.

• Lifting slings with fittings which are used as a choker hitch shall be of sufficient length to assure that the choking action is on the slings and never on a fitting.

• When using lifting slings in a basket hitch, be attention to balance the load and prevent slipping.

• Be sure the fittings have proper shape and size of the opening that can seat properly in the hook or other attachments.

• Keep rigging slings away from the sharp corners, sharp edges that may cut or damage the slings, protrusions or abrasive surfaces.

• Do not drag slings on the floor or over an abrasive surface.

• Do not twist or tie slings into knots or join slings by knotting.

• Do not pull slings from under loads if the load is resting on the sling.

• Do not drop slings equipped with metal fittings.

• Do not use slings that have damages or defect unless it is inspected and accepted by qualified person.

• When use slings in hitched, it should be able to control the load.

• Always stand clear from between the sling and the load, and from between the sling and the crane hook or hoist hook.

• Always keep personnel away from the suspended load.

• Do not allowed personnel ride the sling.

• Do not shock loading.

• Do not twist and kink the sling legs.

• Always center the load in the hook bowl to prevent point loading on the hook.

• During lifting, with or without the load, personnel shall be alert for possible snagging.

• When using slings a basket hitch, always contain and support the load from the sides above the gravity center.

• Always pay attention to the angle of the legs and select slings with enough length to provide adequate rated capacity.

• Place blocks under load prior to setting down the load, to allow removal of the slings, if applicable.

• Do not use Nylon or duplex polyester webbing sling at temperatures above of 194 degrees F (90 degrees C).

• Do not expose the polyester slings under sunlight or ultra-violet light which will degrade the strength of the slings. Always keep slings in a dry, cool and dark place when not in use.

• In choker hitch, slings shall be long enough so that the choker lifting chokes onto the sling eye or body and never onto any fittings.

• Do not use slings at angles of less than 30 degrees from horizontal.

A. Initial Inspection

Before placing any new or repaired slings in service, always inspect the sling and be sure that the correct sling is being used, and the sling meets the requirements of this specification and has not been damaged in shipment.

Failure to read, understand and follow the use and inspection instructions with each sling may result in severe personal injury or death

B. Frequent Inspection

Before each using, inspect the slings by a qualified person.

C. Periodic Inspection

Periodically inspect the slings by a designated personnel base on following information.

1. Sling using frequency

2. Sling service condition

3. Sling service life

4. Periodic inspections should be conducted at least monthly

ANGLE is measured between a horizontal line and the sling leg or body. This angle is very important and can have a dramatic effect on the rated capacity of the sling. As illustrated, when this angle decreases, the load on each leg increases. This principle applies whether one sling is used to pull at an angle, in a basket hitch or for multi-legged bridle slings. This data is only for equally loaded sling legs. Sling angles of less than 30 degrees are not recommended.