Lifting Slings Types: Detailed Description and Characterisation
Lifting Slings Types: Detailed Description and Characterisation
Blog Article
Engineers with 30 years of manufacturing experience will introduce you to Lifting Slings Types with detailed descriptions and features of Lifting Slings products.
Lifting Slings Definition:
A flexible element for connecting a lifting tool to a load when loading, unloading and lifting a load.
Lifting Slings Features:
- Lifting with Lifting Slings reduces the risk of damage to vulnerable surfaces and damage to painted surfaces during the lifting operation.
- Lifting Slings are very soft and flexible, their cross-section shape varies with the surface shape of the sling, and they fit snugly around the sling without harming the sling, and even if they are lightly impacted during lifting, the likelihood of damage is less than with other slings.
- Lifting Slings have good resistance to corrosion and high resistance to carbon oxides and most chemical and organic solvents.
- Lifting Slings have an elastic elongation of about 3% of the working load and about 20% of the breaking load.
- Synthetic fibre slings are widely used for their light weight, high safety factor and long life.
Lifting Slings parameter specifications:
- Webbing sling: The effective length is the length of the inner diameter of the measured length in its natural state. Also with a deviation of not more than ±3% of the nominal length.
- Round sling: the effective length refers to the length of the inner diameter of the natural state measurement length. Besides, the deviation does not exceed ±2% of the nominal length.
- Lifting sling：Colour fastness is not less than the third level in GB251-1995.
- Breakage test, lifting slings samples bearing capacity up to 6 times the ultimate working load. But not less than 6 times the ultimate working load of 90 per cent, should be taken in addition to the same sling. And if there is a piece or more pieces, does not meet the standard.
- The materials specified for lifting slings in the China standard are polyester, as well as polyamide and polypropylene.
- The material of the lifting slings shall be identified by the colour of the label:
- —– polyamide: green
- —– polyester: blue
- —– Polypropylene: brown
International standard colour for Lifting slings:
Standard colours are used in international standards for lifting slings, in order to identify the tonnage to be carried.
Web slings series:
Production range: rated load 1-40T, effective length 1-100M different specifications and models webbing sling.
During lifting operations: web sling provides a wide, smooth load surface, which is particularly suitable for lifting objects with soft surfaces.
Classification of flat lifting slings：
Type of ring-eye form of webbing sling:
Manufacture of webbing lifting slings:
Flat sling (W type), using synthetic fibre industrial filament. Besides, using the international advanced weaving equipment and processing technology weaving. According to the use of structural form with different sewing methods. And the final processing and shaping. It divides into single layer and multi-layer.
webbing lifting slings manufacturing process:
Warping – Ribbon weaving – Dyeing – Unwinding – Sewing -Packing
Round slings series:
Production range: rated load 0.5-2000T, effective length 0.5-80M different specifications and models of slings.
Classification of round lifting slings:
According to the requirements of different lifting environments, we can specialise in the production of, for example ordinary type, high strength type, fireproof type. fluorescent type, light detection type, protection type, combination type and other product series.
Made of polyester industrial filament, suitable for temperatures from -40℃ to -100℃.
High strength round lifting slings:
High Strength round lifting Sling (RH type): made of high performance fibre yarn, about 1/4 the weight and 1/2 the diameter of a normal sling. 1/15 the weight of a steel cable of the same diameter. Besides, low elongation, low density: 0.97, can float on water. UV resistant. Low temperature -125ºC can still maintain the original strength, avoid the use of high temperature environment above 80ºC.
Flame retardant round slings：
Flame retardant round slings (RK type), made of high performance, high temperature resistant aramid fibres. So it is suitable for temperatures from -40°C to -180°C and is 1/2 the weight of a polyester sling.
Manufacture of round lifting slings:
Circular series of lifting slings, also known as encapsulated lifting sling, are composed of two main parts: the sheath and the load-bearing core. The sheath is a wear-resistant tube with casing, woven by the loom, the sheath itself is not load-bearing, and mainly plays the role of protecting the carrier core. The carrier core is made up of parallel bundles of filaments, consisting of one strand of filaments (monofilament twisted) infinitely encircled and arranged in parallel inside the tape skin.
round lifting slings manufacturing process:
Twisting the core–Piercing the core–Sewing–Packaging
Lifting sling combo collection:
According to the requirements of different lifting operations, specialised in providing, such as single-leg sling rigging, double-leg sling rigging, three-legged sling rigging, four-legged sling rigging. But also for you to tailor-made suitable rigging products. In order to meet the needs of all kinds of lifting operations.
Ratchet straps and towing belt collection：
- We specialise in the production of products used for bundling, bolting, towing and hauling of goods in the transport process.
- Products include: different types of bolting straps, car towing straps and so on.
Lifting slings sheath series:
We can also professionally provide all kinds of sling sheath customisation services according to the requirements of different lifting operations.
Lifting Net series:
The lifting net can be divided into lifting net and protective lifting net according to its use, which is widely used in the fields of construction, industry and mining, and bulk cargo terminals, etc. It has the characteristics of flexibility, light weight, and impact resistance.
Soft Ladder Series:
Soft Ladder is the ideal tool for working at height, vertical up and down, the soft ladder has the characteristics of fixed anywhere, direct hanging, durable, light weight and high strength.
Selection of lifting and rigging products:
How to choose the right sling products under different lifting conditions：
- Weight and angle: these two factors directly affect the working load of the lifting product.
- Temperature of the object under lift: whether or not a lifting product that is resistant to high temperatures required. And the effect of temperature on load carrying capacity also should taken into account.
- Surface condition: whether it needs to keep clean. Whether it easy to damage by the lifting products or cut by the lifting and rigging products.
- Working environment: high temperature, cold, windy, acid and alkali corrosion, power supply gas source supporting and other factors.
- Connection with the suspended object: to decide whether to use the connectors, choose what kind of connectors, the topic explained.
- The form of the suspended object: this is a very key factor.
- Selection of suppliers: Suppliers must be professional technicians, sales staff, and must guarantee the quality, safety and perfect after-sales service of the products.
Professional Lifting and Rigging Products Supplier:
- Scale of production: KNKT can manufacture high-grade all-round soft rigging; we not only provide high-quality products, but also lifting solutions. It has a five-storey soft rigging building with a three-dimensional construction area of 60,000 square metres, and independently researches and develops China’s unique fully-automatic packaging assembly line.
- Production equipment: The most advanced Swiss looms, German dyeing and finishing machines, Japanese sewing machines, Spanish twisting machines, as well as advanced testing equipment.
- Production capacity: strong production capacity, strong technical force, complete product specifications, can meet the needs of different orders.
- Qualification: Our factory has obtained ISO safety management system certification and a series of international certificates, such as CE, CCS, JIS, and so on.