Conventional slings (synthetic fibre slings), generally made from high strength polyester filaments, have multiple advantages such as high strength, abrasion resistance, oxidation resistance and UV resistance, while being soft, non-conductive and non-corrosive (no harm to the human body), and are widely used in various fields. There are many types of sling Conventional slings (according to the appearance of the sling) are divided into four categories: ring-through-core, ring-flat, double-eye through-core and double-eye flat.
Slings are generally used in flammable and explosive environments and do not themselves produce sparks. Since the world’s first synthetic fibre flat sling was successfully used in the United States in 1955, it has been widely used in ships, metallurgy, machinery, mines, petroleum, chemical industry, ports, electricity, electronics, transport, military and other fields. With its lightness, ease of maintenance and good chemical resistance, as well as its light weight, high strength and low damage to the surface of the object being lifted, the sling is becoming increasingly popular with users and is gradually replacing wire rope rigging in many areas.
The disadvantages of the sling are mainly different from those of the wire rope rigging, mainly: when the sling has sharp edges, these sharp edges will bring destructive cuts to the sling, in order to protect the sling from cuts, a protective lining can be placed between the sling and the object being lifted.
Main features edit Podcast
Lightweight and soft: 25% of the weight of an equal metal sling The sling is very easy to handle, transport and store. If there are any major cuts on the round sling casing, they must be inspected and must not be repaired or used further.
Analysis of the characteristics and uses of the sling
The sling is increasingly used in contemporary, technological and international lifting construction sites. Products are commonly used in steel plants, oil fields, ports, mechanical and electrical, transport and other industries lifting.
(1)Light weight, good flexibility, easy to bend, easy to use;
(2) does not damage the appearance of the object to be lifted, maintenance of strong;
(3) stable lifting, high safety factor;
(4) has a high tensile strength, beautiful colour, easy to distinguish.
(5) It is an insulator.
(6)The sling has long life, good corrosion and wear resistance.
(7) Progress in rest and obedience, saving money;
(8) universal use, commonly used in aviation, aerospace, nuclear power establishment, military manufacturing, port loading and unloading, power installations, machine processing, chemical industry and steel, shipbuilding, transportation and other various fields.
It is generally 15 mm, 30 mm, 50 mm, 60 mm wide, sling other, flat sling: industrial strength silk by weaving into dyeing for industrial webbing. Sling, 75mm, 90mm, 100mm, 120mm, 150mm, 180mm, 240mm, 300mm, lug widths of 30mm, 50mm, 60mm, 70mm, 80mm, 100mm.
Industrial webbing is industrially sewn into flat slings. In any case, if the user is unsure of the level of damage, it is best to send the round sling back to the manufacturer for further inspection. A flat ring sling, on the other hand, is simply a circular ring. In the event of local damage to the carrier caused by overloading or temporary use, the jacket will be the first to break and warn against accidents.
Synthetic fibre sling is a soft sling with excellent performance, made of high quality high strength low tensile polyester filament, a substitute for steel wire rope. It has been commonly used for more than 50 years in internationally developed industrial countries. It does not damage the surface of the sling (including the paint layer) without any negative harm to the human body.
The TA sling is a woven, wear-resistant jacket with a high-strength core that forms a ring sling (also known as a “universal sling”), which is one of the most widely used soft slings. The round sling is made up of a closed bearing core of equally arranged filaments, Tianjin sling, using single stranded filaments for twisting, the number of filaments in a row reaches more than 100,000 weeks, playing a bearing role. The synthetic fiber sling is soft and easy to handle.
Performance and advantages
Strength: flat sling 1T-30T round sling 1T-300T
Belt width: 25mm-250mm
Elongation: <10% under rated load 2%-3% under extreme working forces
Load identification: load tonnage can be identified by the colour of the sling jacket after the label on the sling has worn off during use.
Operating temperature: -40~100°C Safety factor: 5:1 6:1 7:1
1、Light weight and easy to use.
2、No damage to the surface of the object being lifted.
3、Smooth and safe lifting.
4、Highly powerful, can judge the tonnage according to the colour
5、Increased labour efficiency and cost saving.
6、Corrosion resistance, good wear resistance.
7、Widely used, suitable for ports, docks, chemicals, steel, machinery, installation and other lifting places.
Selection of specifications and types Editorial Podcast
When choosing sling specifications, the size, weight and shape of the load to be lifted, as well as the lifting method to be prepared and other common influences on the way of use coefficients must be included in the calculation to consider the requirements of the ultimate working force given, while the working environment and the type of china Webbing sling manufacturers load must be taken into account. If several slings are to be used simultaneously to lift a load, the same type of sling must be used; the raw material of a flat sling must not be affected by the environment or the load. Whether or not accessories or soft lugs are required, careful consideration must be given to matching the end section of the sling to the auxiliary accessories and lifting equipment.
Cautions Editorial Podcast
Follow good lifting experience Plan a lifting and light handling programme before you start lifting. When lifting, use the correct sling connection The sling is correctly placed and connected to the load in a safe manner. The sling must be placed on the load so that the load can act on the width of the sling in a balanced manner; always without knots or twists The sling stitching area must not be placed on the hook or lifting equipment and always on the upright part of the sling to prevent damage to the tag by moving away from the load, the hook and the locking angle.
Notes on use
- Do not use a damaged sling.
- Do not twist or strangle the sling when lifting.
- Do not allow the sling to be tied in knots when in use.
4、Avoid tearing the sewing union part or overloading.
5、Do not drag the sling when moving it.
6、Avoid strong snatching or shaking causing load on the sling.
7、Each sling must be carefully checked before use.
8、Tapestry has the function of resistance to inorganic acids, but is vulnerable to organic acids.
9、Fibrin is suitable for places where it is most resistant to chemicals.
10、Nylon has the ability to resist strong organic acids, but is susceptible to damage from facultative acids and can lose up to 15% of its strength when exposed to moisture.
- If the sling is contaminated with chemicals or used at high temperatures, a reference should be sought from the supplier.
Requirements for use
When using flat slings with soft lugs, the minimum length of the lugs used must not be less than 3.5 times the maximum thickness of the hook in contact with the lugs, and the angle of movement of the lugs must not exceed 20°. When connecting slings with soft lugs to lifting appliances, the contact part of the sling and the lifting appliance must be straight, unless the axial width of the sling does not exceed 75 mm and the bending radius of the lifting appliance must be at least 0.75 times the axial width of the sling.
Standard Editorial Podcast
Material: tapex, polypropylene, nylon, nylon, nylon, synthetic fibres
Type: single-layer, double-layer, four-layer
Material of manufacture: 100% polyester
Strength: flat sling 1T-30T round sling 1T-300T
Belt width: 25mm-150mm
Elastic depth: <10% under rated load 2%-3% under extreme working forces
Load identification: during use, the load quality can be identified by the colour of the sling jacket tube after the label on the sling has worn off.
Operating temperature: -40 to 100 degrees Celsius
Safety factor: 5:1, 6:1, 7:1, the new industry standard JB/T8521.1-2007 is the implementation standard for flat slings, JB/T8521.2-2007 is the implementation standard for round slings, the product safety factor is 6 times for national standard products.
Representation method: The representation method of sling tonnage
Sling international colour coding card
International colour coding card for slings
The international colour code is generally used to distinguish the tonnage, see diagram for tonnage greater than 12000Kg are used orange, at the same time the belt body and the label are marked with the load.
Production process edit Podcast
Conventional sling loads and lengths are generally integers. It can be used directly for conventional lifting. For special lifting situations, where objects with special requirements need to be lifted, they can be made according to the requirements of use (according to the length and load used).
Maintenance methods editorial broadcast
- When moving the sling and the goods, do not drag it. Do not make knots in it.
2、Do not connect the flexible ring to any device that may cause damage to it, wear and tear.
3、Do not twist them when carrying loads.
4、A sling without a sheath should not be used to carry loads with sharp corners and edges.
5、The soft ring should be avoided to be opened at an angle of more than 20°.
6、The sling should be stored in conditions protected from light and UV radiation.
7、The sling should not be stored near an open fire or other heat sources.
8、When the sling is not in use, it should be placed on a well-lit area.
Alternative Products Editorial Podcast
Industrial strength yarns are woven and dyed into industrial webbing in widths of 15 mm, 30 mm, 50 mm, 60 mm, 75 mm, 90 mm, 100 mm, 120 mm, 150 mm, 180 mm, 240 mm, 300 mm, with lugs of 30 mm, 50 mm, 60 mm, 70 mm, 80 mm and 100 mm. The industrial webbing is industrially sewn into flat slings. The flat ring-eye sling has a lifting loop on each side with an anti-friction sheath sewn onto the loop. Several layers of webbing are sewn together in the middle part of the flat ring-eye sling. The flat ring sling, on the other hand, is just a round ring.
Synthetic fibre slings
is a flexible sling with excellent performance, manufactured from high quality, high tensile polyester filaments, which are a replacement for steel wire. It has been commonly used for more than 50 years in internationally developed industrial countries. Its superior performance is favoured by the majority of users. Its main features are: lightness and softness: 25% of the weight of an equivalent metal sling, the sling is very easy to handle, transport and store. It does not damage the surface of the sling (including the paintwork) and does not cause any negative damage to the human body. Safe and reliable: shock absorbing, corrosion resistant, ageing resistant, non-conductive and non-sparking in flammable and explosive environments during use. The elongation under rated load is 1.6% and the tensile properties are close to those of steel wire rope. The condition of the sling in use is easy to see at a glance, the daily safety checks are intuitive and simple, and it can be assumed that a sling that looks in good condition is in good condition. The synthetic sling is soft and easy to handle. Corrosion resistant and non-conductive.
It consists of a closed core of equally arranged filaments with no poles, twisted in single strands, with the number of filaments in a row reaching more than 100,000 weeks, to carry the load. The round sling is round in shape and has no eyelets.
The outer layer of the round sling is a special double layer of wear-resistant casing buttressed into a ring shape. In the event of serious overload or long-term use resulting in local damage to the carrier, the jacket will be the first to fracture to warn against accidents. If there is a large cut on the round sling casing it must be checked whether it can be repaired or used again. In any case, if the user is not sure of the extent of the damage, it is best to return the round sling to the manufacturer for further inspection.
Colour tips editorial Podcast
The different colours of the sling represent different carrying tonnages, and in accordance with the requirements of the synthetic fibre sling execution standards, the colours are as follows: purple represents one tonne, green represents two tonnes, yellow represents three tonnes, grey represents four tonnes, red represents five tonnes, six tonnes is brown, eight tonnes is orange, ten tonnes is orange, and large tonnage slings, also known as ten tonne or more slings, are also all orange.
In addition to the coloured slings, the lifting sling also contains a white sling, which does not distinguish its colour according to tonnage, but is white in colour for all kinds of carrying tonnage. There is a difference between the quality of this white sling and the coloured sling in terms of tension, so if you are lifting a heavy object, the coloured sling is superior.