One Way Web Slings Labelling And Testing Requirements

It is often found that many people had been unclear about the differences in labels and testing between disposable flat woven slings (also called one way slings, or single use web slings) and conventional reusable webbing slings.

In many cases, the labels specified in EN 1492 - 1 are directly used on disposable one way slings. In fact, the EN 1492 - 1 standard does not clearly define the requirements one disposable one way slings. However, the German DIN 60005 standard provides detailed descriptions of all aspects of disposable one way slings.

Now, let's explain the label and testing requirements for single use one way slings according to DIN 60005.

The DIN 60005 standard has clear requirements for the labels of single use one way slings, aiming to ensure safe use and quality traceability. The label requirements cover aspects such as content and form:

A:Label Content：

1.Working Load Limit (WLL) for straight lifting.

2.Webbing material (e.g., polyester, polyamide, polypropylene, or alternative materials).

3.Clear indication that it is a disposable sling.

4.Effective length in meters.

5.Manufacturer's name

6.Traceability code.

7.Standard number DIN 6005.

8.Year of manufacture.

9.CE marking (if intended for the European Economic Area).

B: Label Formal Requirements:

1.The label information should be clearly and durably marked on the sling,

2.The label font height used should be at least 1.5 mm.

3.The label needs to be directly fixed on the sling, and a part of itself should be placed under the seam. This part should also be marked with the above - mentioned information for reference.

4. Label for disposable one way slings must be orange colored labels, to distinguish them from other types of webbing slings.

PS: As Din 60005 is a Germany Standard, other countries may still use European En 1492-1 or North American ASME/ANSI B30.9,WSTDA-WS-1, but it should be cleared marked as Single Use and the safety factor.

Disposable one ways always come with large quantity, therefore the testing for the one way slings can't be conducted as the normal webbing slings. But the test still should be

fulfilled regularly in our daily production and using. The testing requirements for a large quantity of disposable one trip web slings are as follows:

Testing Equipment:

Use a tensile testing machine that meets the requirements of Class 1 specified in DIN EN ISO 7500 - 1. If necessary, use measuring tools with appropriate measuring ranges (such as vernier calipers, rulers).

Testing Load: The test sample needs to withstand a force that is at least five times its Working Load Limit (WLL).

Testing Frequency:

In the case of having a quality assurance and documentation system: Manufacturers need to conduct tests according to the maximum quantities specified in the standard based on systems such as DIN EN ISO 9001. The specific quantities are as follows:

When WLL ≤ 3t, test at least once for every 20,000 pieces.

When WLL > 3t, test at least once for every 8,000 pieces.

If the above - mentioned maximum quantity is not reached, test at least once a year.

In the case of having no quality assurance and documentation system: Manufacturers need to conduct tests according to the specified maximum quantities. The specific quantities are as follows:

When WLL ≤ 3t, test at least once for every 2,500 pieces.

When WLL > 3t, test at least once for every 1,250 pieces.

If the above - mentioned maximum quantity is not reached, test at least once a year.

Testing Methods:

For Disposable Endless Flat Woven Slings: Place the representative disposable flat woven sling or sling straight and without torsion between the test pins of the testing machine. The connecting seam shall not touch the test pins, and the diameter of the test pins shall not exceed 20% of the width of the webbing.

For Disposable Sling with Eyes: Place the representative disposable flat woven sling or sling straight and without torsion between the test pins of the testing machine. The diameter of the test pins shall be such that the angle between the slings is not less than 10° and not more than 20°.

Acceptance Criteria:

If the test sample can withstand a force equivalent to five times its WLL, the test is passed, and there is no need to conduct tests with larger loads.

If the representative disposable flat woven sling fails under a force less than five times its WLL, but the test load reaches at least 90% of this force, three more samples of the same type need to be tested. If any of these samples fails under a force less than five times the WLL, the slings of this type do not meet the standard.

Test Report:

The test and investigation results need to be recorded in the test report prepared by the manufacturer, including the decision to accept or reject the representative disposable flat woven sling.

Personnel Qualifications: All tests must be carried out by qualified personnel.

Accurate and well-founded - based labels and testing can maximize the safety of using disposable one way slings and reduce or even avoid accidents. Wristrong Industry has been engaged in the production of disposable flat woven slings for over 15 years. We manufacture and send a large number of disposable one way slings to steel mills, geomembrane factories, wood processing plants, docks, and transportation companies around the world. It has accumulated extensive experience in manufacturing disposable one way slings and established a complete set of quality and cost control procedures. You can click Here for more information of Wristrong one way slings, or send inquiries to sales@wrigging.com for your OEM one way slings requirements.