The structure of synthetic fiber slings can be divided into single sling, double sling and multi-layer sling. Lever tensioner single and double slings refer to the number of parallel slings, two or more are called double slings; multi-layer lifting belt is lifting belt, they are formed as a whole by overlapping two or more layers of the same belt. Sling end backstitch ring (equivalent to wire rope buckle) is called soft ring, the width of small slings have soft ring, can be directly hooked and other hooking devices, or and other slings as well. Use the upper end piece.
Tensioner which is good? At present, most of the sling products are made of high quality polyester industrial filaments, and the structure consists of parallel arranged circumferential bundles forming a bearing collar (bearing core) with a special wear-resistant bushing. The bushings do not bear weight and protect only the flat wound filament bundles, so the slings have a longer service life. The color of the label on the sling is the material used for the sling. Green is polyamide, blue is polyester and brown is polypropylene. The safety factor of a sling is usually not less than 6.