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Sep 1,2023

The Complete Guide On Using Lifting Slings

It's fantastic to have access to lifting slings. As the name indicates, they're used to lift things, often by laying them out beneath the object to be raised to make a sling that can be lifted safely and securely by a crane. However, there is a wide variety in both their composition and use.

For What Purpose Do We Use Lifting Slings?

Lifting slings are used to lift oversized, bulky items that lack attachment points. A pile of metal pipes, a pallet of cement blocks, or any other large, awkward item are all examples of things that can need lifting. Each end of a sling has an eye so that it may be hooked into a crane or other kind of lifting equipment. Roundslings are another option. These are essentially similar but are made to be a single strand. Typically, a lifting hook is hooked through the round sling after it has been wrapped around the item.

How Long Do Lifting Slings Last?

Lifting slings may last up to five years if properly maintained. However, inspections must be performed at least once every six months to comply with the law. You should check for snags, breaks, frays, and stretched areas to ensure no component failures during heavy lifting. Workplace accidents may be avoided by replacing a sling when any signs of wear are discovered.

How Many Variations Of Lifting Slings Exist?

The four most prevalent sling materials are nylon, polyester, wire rope, and chain. All of them are made from various materials to accommodate multiple purposes. China wholesale lifting slings, however, are always offered by specified length and weight. So, be sure the sling you're using is safe and secure for the task at hand.

Nylon Slings

When the sling's flexibility is essential, nylon slings are perfect. They are sturdy despite their small weight, increasing the load a crane can lift. They benefit things like liquid or fragile loads since they may stretch by 6-8% of their nominal length. However, nylon may become brittle if it absorbs water, which can happen if liquid loads aren't controlled effectively.


Like nylon slings, polyester slings may stretch (albeit less than nylon, at 3% of nominal length). Still, they also have the additional virtue of being safe to use while handling open liquids and in environments with acids and bleach agents. Due to their webbed construction, they are also often called web slings or rigging slings. As a bonus, polyester slings are ideal for lifting boats, where surface marking of the material should be avoided.

Wire Rope

The strands of wire in wire rope make up the rope's form. To create a thicker, more robust rope, wires are wrapped around a core, just as fiber strands are twisted together to create a natural rope.

Somewhat counterintuitively, the bigger the number of strands a wire rope has around its center, the greater its flexibility. Because its tensile strength is greater near its center, it is more bending-resistant.


Chain slings are typically made from a high-grade steel alloy and put through their paces in the most demanding lifting situations. The versatility of these hooks allows them to be used with a wide variety of lifting assemblies, but they need special attention to prevent rust and corrosion.

How Do You Sling A Load Properly?

Depending on the weight, size, density, and center of gravity of the lifted load, there are many different methods to sling ropes. The hitch utilized for the sling, if any, also requires careful consideration. For instance, you shouldn't utilize more than 75% of the sling's nominal lifting capability to lift using a 'choker hitch' (where the sling hooks through itself). Remember that the lifting point should be squarely above the load's center of gravity and that adequate securing of the load is paramount. This prevents the load from toppling over while lifting.

How Should You Check Slings For Defects?

As was previously noted, slings must undergo a legal inspection every six months. However, examining each usage is a prudent best practice for preventing mishaps.

Even while only a qualified professional should do official sling inspections, you should still watch for things like faded or missing identifying markings, acid burns, lost or missing hardware, and any melting or discoloration.

Safely Using Lifting Slings

Always keep the following in mind while using lifting slings for any lifting.

Before Using, Check The Sling For Any Signs Of Wear

In no circumstances can a damaged lifting sling be used. A broken sling might result in the load being dropped, resulting in serious injuries or even death on the job and costly damage to machinery. Before lifting slings, ensure they are constantly in good condition.

Verify That The Lifting Sling You Selected Suits The Task At Hand

Webbing slings and round slings are the two primary forms of lifting slings. Round slings are more adaptable and can conform to non-standard load forms, whereas webbing slings provide a wider surface area to protect the load.

The Lifting Sling Must Not Be Loaded Above Its Safe Operating Load

The weight of the load you're lifting will dictate the kind and size of lifting sling you'll require. A lifting sling with a Working Load Limit of 20 tons rather than 15 tons would be necessary to hold the weight of a load of 17 tons. The WLL of each lifting sling varies. If you lift more than this, you risk breaking the lifting sling and maybe dropping the load. Our Slings' WLL is listed prominently on each product page.

Be Sure The Load Is Safe

All slings must be fastened to the load to ensure the most significant amount of control and prevent any loose sections of the load from shifting or sliding. A well-trained worker would know how to rig and connect the slings.

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How to Properly Select Industrial Crane Slings

While relocating a hanging weight, it is vital that industrial personnel use the appropriate slings. With the goal of ensuring the secure lifting and moving of heavy equipment, manufacturers of wire rope regularly release cutting-edge new sling designs. In general, the following criteria should be considered while choosing a industrial crane slings: • The size and weight of the load • The sensitivity and temperature of the material being moved • The configuration and the shape of the load • Environmental circumstances • The results of the visual examination (This is to be done before each use to ensure security and effectiveness. Slings are also often employed for lifting machinery. Incorrect usage of hoisting equipment (including slings) may cause either a speed increase or decrease, in addition to overloading.   Types of Slings: Six different kinds of slings exist: • Natural fiber rope • Synthetic fiber rope • Metal mesh • Chain sling • Synthetic web • Wire rope These slings are divided into three more categories: • Chain • Wire rope and mesh • Synthetic web /Fiber rope   Factors to Consider When Selecting Industrial Crane Slings The following guidelines may be helpful in choosing the proper kind of sling: Chains Sling The proper chain will typically be thick, solid, and uncut. Check for any stretches, scratches, cavities, or wear beyond the manufacturer's specifications before using. If any of these problems are present, the slings should be considered unsafe and removed from service immediately. Chains made of alloy steel are widely employed in large lifting machinery due to their high strength and flexibility. Nevertheless, because of its lack of resistance to rapid shocks, improper usage of chain slings may result in the sling breaking, the cargo being damaged, and the workers being injured. Wire Rope Sling Wire ropes are made by compiling several separate wires and twisting them into strands. Wire rope is created when these strands are further twisted together. Wire ropes constructed from fiber strands are more flexible but also more easily damaged by the elements. Yet, wire ropes constructed from wire strands have a reputation for being more robust and resistant to fire. When shopping for a durable wire rope, it's important to consider four key qualities: strength, wear resistance (bending without distortion), abrasion resistance, and Withstanding Abuse. • Strength Size (diameter), grade, and construction all play a role in a rope's ultimate breaking strength. The major reason for this is to make sure the wire rope can handle the utmost weight that may be put on it. • Wear Resistance The wire rope's capacity to resist fatigue is an important quality to look for. Fatigue failure occurs when tiny fractures form in the rope as a result of repeated bending at a tight radius. Blocking or cushioning the wire rope to extend the bend radius is the most popular way to avoid the emergence of such fractures. • Endurance to Abrasions This characteristic is established by the dimensions and quantity of individual wires used in the rope's construction. It has been noted that thinner wires are more malleable since they bend more readily. Yet, they provide little protection against wear and tear. Larger wires, on the other hand, are less pliable but more resistant to abrasions. • Withstanding Abuse This is a typical reason for a rope to break. Wire rope slings are easily damaged by improper use or handling, which may lead to kinks and bird caging and, in turn, possible personal injury to anyone working with the slings. Strict adherence to the safety protocols associated with the correct usage of the sling may help avoid such incidents and extend the life of the sling. Fiber Rope and Synthetic Web Sling • Fiber Rope Slings Construction and painting are two examples of short-term uses for fiber rope and synthetic web slings. Most people trust them with pricey and fragile cargo like expensive medical equipment. Nevertheless, fiber rope slings quickly deteriorate when exposed to caustics and acids. Because of this, these ropes must be kept in an environment free of chemicals and solvents. Slings should also be checked for damage such as cuts, gouges, worn surfaces, brittle or discolored fiber, melting, or charring. The sling must be thrown away promptly if any such flaws are found. Extreme internal wear might be indicated by the accumulation of powdery sawdust on the interior of the fiber rope. The sling has likely been chemically damaged if even lightly brushing the rope strands with a fingernail causes them to break readily. It would be best if you didn’t use ropes like that at all. • Synthetic Web Slings Nylon, polyester, and polypropylene are the materials used to create these slings. They conform to the shape of the load and keep it securely in place. They have a 300,000-pound weight capacity (depending on their size). They are also shock-absorbing and won't leave scratches on shiny surfaces. Since they are not affected by mildew, rot, or germs, can withstand chemical action, and have great abrasion resistance, they offer cheap upfront expenses and a long lifespan.  Synthetic web slings should be inspected for damage such as burns, melting, charring, snags, rips, cuts, broken stitches, deformed fittings, excessive wear, and elongation before each use in accordance with the manufacturer's guidelines. Conclusion The safety of a sling and the people using it depends on how well it is used and cared for. The aforementioned advice should be useful in getting you acquainted with its crucial features. With years of experience and a focus on quality, SHANDONG SLING & STRAP has risen to the top of China's lifting sling, ratchet tie-down strap, and tow strap production industries. We provide a wide variety of webbing, including those used in ratchet straps, tie-down straps, tow straps, bolt straps, cargo nets, and round slings. Whether it's the IS09001 quality management system requirements of SGS, the stringent CE and GS quality standards of TUV, or the specific needs of our individual customers, all of our goods meet or exceed all expectations.   

Benefits of Using Synthetic Lifting Slings

Synthetic lifting slings are one of the most frequently used equipments on any work site. They can support heavy loads, and their soft material offers better load protection than wire rope made of coarse cloth. Synthetic slings are mostly made from lightweight, durable, and flexible materials such as polyester or nylon. They are widely used in heavy industries such as construction and shipping as they are affordable, durable, and available in various sizes. Types of Synthetic Lifting Slings Synthetic Web slings Web slings consist of flat belt straps with fittings and holes. Web slings are the most commonly used sling. In contrast to chain slings, they have better flexibility and are lighter. They can also be manufactured with a wide breadth to increase surface area to handle heavyweight objects. They are available in two types of material nylon and polyester. During a lift, a user will observe 8-10% stretch for nylon and 3% for polyester. Synthetic Round slings Round slings are designed with load-bearing fibers or core yarns shielded by a woven outer jacket. These slings possess remarkable strength while being soft and pliant, and they safeguard against scratches, dents, and crushing of smooth or polished surfaces. The purpose of a woven outer jacket is to protect the inner core yarns from UV radiation, dust particles, and grease. They can stretch 3-5% during a lift at the weight-load limit. For heavyweight use suitable for automotive, and other heavy industries, there is a particular type of round slings capable of withstanding load lifting limit of up to 500,000lbs. Synthetic Rope Slings While synthetic rope slings have been utilized for more than six decades, the development of high-performance fibers has shifted how they are viewed for overhead lifting tasks. These advanced fibers are renowned for their lightweight build, exceptional strength, flexibility, and adaptability. As a result, they are gaining wider acceptance and are now the preferred choice for specific lifting applications in the offshore and deepwater, shipyard, and construction industries. Many types of synthetic rope material are available in the market, so it's essential to know the particular fiber that a rope is made from to help understand how it would behave during the lifting. Advantages of Synthetic Slings From lifting to rigging, synthetic slings are useful for various industrial applications. Read on further to learn more about what makes these lifting slings so tough and adaptable. Highly Flexible The flexible fibers of these synthetic slings are excellent for quickly gripping irregularly shaped loads. This quality also makes them perfect for lifting fragile or soft objects without scratching or piercing them. Lightweight One of the benefits of lifting slings is that they are made of lightweight material like synthetic polyester, making it easy to transport many lifting slings from one work site to the next. This must be done with something other than chain slings as they are heavy to move around. Customizable According to Applications The uses of lifting slings can vary from industry to industry. The strength and breadth/length of synthetic slings can be customized precisely during manufacture to suit any industry application's needs. Various fittings can be attached to both ends for hitching or hooking a load. Resistant to Abrasion and Cuts Regarding durability, lifting slings are resistant to scratches as they are made from tough synthetic fibers with an added abrasion-proof layer. This quality also makes the sling cut-resistant when the sling drags over a sharp corner while lifting an object. But synthetic fibers are still not as tough on edges as chains or wire ropes, so proper edge protection must be used when handling loads. Chemical Resistant According to fiber quality standards, synthetic slings have variable degrees of resistance against chemicals. For example, nylon slings resist alkaline burning, while polyester slings have resistance against acidic burns. Nylon slings are also unaffected by grease and oil. Adaptable to Industry Applications From mining and construction to shipping, synthetic slings can be manufactured according to specifications to fit the needs of various industry applications. Another advantage is that they can be used in a wide variety of hitches, such as choker hitch, basket hitch, or vertical hitch, to grip diverse objects, making lifting slings exceptionally versatile. Long-lasting A fantastic quality of synthetic fibers is that they do not rot like natural fibers. Moreover, they are rust proof which makes synthetic slings better than chains. Synthetic fibers can tolerate a wide variety of temperatures and weather conditions which natural fibers cannot, making lifting slings long-lasting and rigid. But you should remember that they have low heat resistance compared to chains, so they cannot tolerate extreme heat environments. Neutral and Non-Conductive Lifting slings are not nonconductors of electricity and are non-flammable. This property makes them safe to use in explosive environments. Inexpensive and replaceable Synthetic slings are cheaper to produce as compared to chain slings. Furthermore, synthetic round slings can be repaired if they suffer damage to the outer jacket. This cannot be done with chains; once broken, there is the additional cost of replacing them. So, synthetic slings are the way to go if you want to save on your money. Easy to Deploy When compared to chains, synthetic slings are much more convenient to use. You have to unroll and do a safety inspection which consists of checking for signs of chemical burns and knots in the sling and observing the sling for cuts and abrasions. Once this is confirmed, the sling is ready for use in the field. Final Words In conclusion, synthetic lifting slings are the perfect equipment for lifting loads in heavy industries. Whether you are hoisting, towing synthetic slings and synthetic ropes play a significant role in making the tasks efficient and time-saving.  

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