Suhbo Ind Co.,Ltd

Addr. : 6, Mipyeong-ro, 106 beon-gil, Wonsam-Myeon, Cheoin-gu, Yongin-si, Kyunggi-do, Korea    

Tel : +82 (0)31-334-6979/1788     Fax : +82 (0)31-334-1789      e-mail : suhbo@suhbo.co.kr                                                     

Copyright©2011 SUHBO INDUSTRY CO.,LTD. ALL RIGHTS RESERVES.

Use and Care

Powertex Roundslings

Copywrited  by  SUHBO IND CO.,LTD

Identification

Powertex roundsling marked to show by label:

* The rated load for the types of hitches, and

    the angle  upon which they are based,
* Effective Length(EL) and Safety factor(SF)

* The core material
* The name or trademark of the manufacturer

    (Suhbo Ind Co.,Ltd),
* The powertex's code or stock number, and

    Operating warning
* Multi checking system if it’s powertex-multi roundsling

Rated Load

Rated loads (capacities) for single-leg vertical,
choker, basket hitches, and Horizontal angle degree
are as shown in Table.

For angles not shown, use the next lower angle or
a qualified person to calculate the rated load.
Rated loads are based on:
Material strength,
Design factor,
Type of hitch,
Angle of loading (see fig.1), and
Diameter of curvature over which the sling is used.

Angle

Do not use horizontal angles less than 30 degrees except as recommended
by the sling manufacturer or a qualified person.

The rated load for a sling in a choker hitch is the value in Table.
provided that the angle of the choke is 120 degrees or more (see Fig.2).

For other synthetic round sling materials and for configurations not shown, use the rated loads provided by the sling manufacturer or a qualified
person.

Fig.1)

 

Fig.2)

 

Fitting

Ensure that mechanical fittings used as
part of a synthetic round sling meet the following:


* Materials are compatible with the mechanical

   and environmental requirements of the sling,
* Fittings have a rated load at least the same as the round sling,
Fittings have sufficient strength to sustain twice

   the rated  load of the sling without visible

   permanent deformation, and
Surfaces are clean, and sharp edges are removed.

Inspection

Designate a qualified person(From Suhbo)to inspect
slings and attachments each day before use for
damage or defects.

This qualified person also performs additional
periodic inspections where service conditions warrant,
as determined on the basis of:


* Frequency of sling use,
* Severity of service conditions,
* Nature of lifts being made, and
* Experience gained during the service life of

       slings used in similar circumstances.

 

Inspection / Disuse

Make a thorough inspection of slings and attachments.
Items to look for include:

Missing or illegible sling identification,

 

Acid or caustic burns,


Evidence of heat damage,


Holes, tears, cuts, abrasive wear, or snags, that expose the core yarn,

Where any such damage or deterioration is present,
remove the sling or attachment from service immediately.

Broken or damaged core yarns,

Welding splatter that exposes core yarns,

Knots in the round sling body, except for core yarn knots inside the cover,

Discoloration and brittle or stiff areas on any part of the sling,

Pitted, corroded, cracked, bent, twisted, gouged, or broken fittings, and

​Other conditions that cause doubt as to the continued use of the sling.

 

Repair

Repairing/Reconditioning:


Do not use worn or damaged slings or attachments.
Discard or repair them.

Use damaged slings only after they are repaired, reconditioned, and proof tested by
the sling manufacturer or a qualified person

using

 

Test

1. Proof Test

   

Before initial use, ensure that all synthetic round slings
incorporating previously used or welded fittings are
proof tested by the manufacturer or a qualified person.
Other new synthetic round slings and fittings need
not be proof tested, although the employer

may require proof testing in purchasing specifications.

2. Breaking Test

For certified the sling, there are different breaking load

as following,

a) ISO , JIS STANDARD

    BL = SWL X 6 TIMES

b) EN, S MARK STANDARD

    BL = SWL X 7 TIMES

c) IRO STANDARD

    BL = SWL X 5 TIMES