How to choose a best webbing sling belt?

To choose a qualified lifting sling, you should know the supplier's production process, type and parameters, so that you can more comprehensively consider which is more appropriate. We can do a preliminary understanding of lifting slings from the following aspects.

1. Type

From the color: color and white.

From the type: web sling and flexible sling.

From the structure: ring sling (round) and ring eye sling (also known as “two buckles”).

From the material: polyester and polypropylene, Dyneema and so on.

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2. Difference between webbing slings and round slings

webbing sling is woven by loom at one time, multi-layer sewing without core, the surface of the belt skin will be hardened by PU treatment to increase the wear-resistant and cut-resistant performance, and the carrying surface is wide.

Polyester round sling overall soft, the core of the belt using no ji winding way, according to the different load winding different circles, the number of roots of the filament, the belt skin is not stressed, mostly used for large tonnage.

3.Material of sling belt

Made of industrial polyester strong silk PES, the main models produced by Tatsuya to polyester and polypropylene-based.

Polyester is colorful sling, polypropylene is white webbing sling.

The difference between the two materials:

  • Polyester silk, alkali resistant, but susceptible to inorganic acid erosion; polypropylene silk acid and alkali resistant.

  • Polyester applicable temperature is -40℃~100℃; Polypropylene applicable temperature is -40℃~80℃;

  • Polyester tensile strength, anti-ultraviolet strength is better, not easy to aging; polypropylene silk tensile strength is smaller, anti-ultraviolet money strength is poor, thermal stability is also poor, easy to aging, is not easy to strong ultraviolet rays for a long time under the sun.

  • Polyester silk can be colored, according to the dyeing standard, different tonnage dyeing different colors. Polypropylene silk is not resistant to high temperature can not be dyed, so it is white.

heavy duty color code lifting belt one way webbing sling

4. Load parameters

4.1 Rated load

eye to eye webbing sling: 1~50 tons.

Round sling belt: zui up to 3000 tons.

4.2 Color

According to the dyeing standard according to the tonnage of different dyeing, more than 8 tons are orange (flat sling 8 tons and 15 tons for blue)

What is the tonnage represented by different colors of slings? What is the width of the sling for different color tonnage?

4.3 Safety factor

4:1, 5:1, 6:1, 7:1

The breaking force test report is an important basis for judging whether a sling is good or bad to meet the requirement.

4.4 Length

1~100m, the length size has no effect on the load, strength and other properties of the sling.

Note: The effective length of a ring sling means half of the circumference.

4.5 Number of layers: 4-5 layers

4.6.Ring Eye

The ring eye of the flexible sling is the same size as the body of the sling, and the ring eye is sewn from the body of the sling. The loop eyes are used as lugs to facilitate the connection between the sling and the hook or other rigging, and the loop eyes of flat slings are usually added with wear-resistant sheath (gray).

5. Usage

Please refer to the detailed use method:How do you use a webbing sling belt?

Production process

1.Purchase raw materials

2.Weave the belt skin

3.Dyeing and drying

4. Tape cutting

5.Computerized sewing (close channel)

6.Sewing ring eyes, long runs, flowers

7.Trimming burrs

8.Finished product inspection: sling test report

9.Packing into warehouse

Detailed introduction

1.Sizing: Whether it is flexible or flat polyester filament need to be sized, the purpose is to weave the belt skin or core will not be chaotic, the raw material on the wire winding is more chaotic. For more details, please refer to the instructions of sling belt straightening.

2. Weaving: the strength of the belt lies in the number of weft threads used and the degree of density, and the number of entangled roots in the core of the flexible sling is used as a criterion to judge the strength.

3. Dyeing: The dyeing of the sling needs to reach a certain temperature so that it does not produce color difference and does not lose color, the temperature needed for different loads and bandwidths is also different, according to the standard color requirements of the production.

4.Cutting: The length of single sling can be 1~100 meters, according to the customer's requirement, the cutting method adopts the form of high temperature ironing off, in order to keep the fiber not easy to be dispersed.

5. Sewing: according to the requirements of the same material as white thread sewing single or multi-layer, including product nameplate logo, ring eye (wear-resistant sheath), etc., the sewing density have certain requirements.

6. Handling threads: the fifth step produces more than threads need to be ironed, cut to deal with, and then can be inspected, packaged and shipped.


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