Crane Lifting Slings, Bridles and Assemblies
Tri-State Rigging Equipment is an authorized Rigging Weld and Service Center. With over 60 years in the material handling industry, we are experts at manufacturing and repairing rigging slings of all types. These include:
- Chain Slings
- Wire Rope Slings
- Polyester and Nylon Synthetic Slings—round or web style
- Fiber Rope Slings
- Metal Mesh Slings
In addition to crane slings we can also take care of all your sling protection needs from corner guards to wear pads to sling sleeves. If you are unable to locate what you need, here at Tri-State we can custom configure and manufacture a sling to fit any application.
If you need help finding what you are looking for, call or email our sales team to speak with a rigging product specialist.
Chain rigging slings are constructed using the industry standard grade 80 and grade 100 alloy steel chain. Chain slings are popular in overhead lifting due to their ruggedness, strength, resistance to abrasion and cutting, and their ability to perform under exposure to high temperatures. This allows alloy chain slings to be used in:
- Steel Mills
- Heavy Machine Shops, etc.
Chain lifting slings are made from alloy steel and can be custom configured to fit any lifting or rigging application. Chain slings are easily modified and repaired offering industry leading versatility. Lifting chain slings are available in single-leg, 2-leg, 3-leg and 4-leg alloy chain bridle assemblies and they can be used in vertical, choker, or basket hitches. In addition, chain slings can be configured to have adjustable leg lengths. Adjustable chain slings are an ideal solution for picking up asymmetrical loads and loads with an unknown or awkward center of gravity.
Wire Rope Slings
Wire rope rigging slings, sometimes referred to as cable lifting slings, consist of individual steel wires that form strands, the strands are then laid around a fiber or steel IWRC (Independent Wire Rope Core) core. Wire rope can be manufactured in a wide variety of patterns and constructions. These patterns and constructions all give the wire rope different properties, allowing wire rope slings and bridles to be used in variety of different working conditions and applications. Wire rope lifting slings are overall more cost-effective and lighter in weight than similar capacity chain rigging slings. This makes them very popular in the following industries:
- Oil and Gas
- General Manufacturing
In addition to these industries, wire rope bridles and assemblies can stand up to the harsh conditions seen in steel mills and forging facilities. Steel wire rope slings are available in single-leg, 2-leg, 3-leg, and 4-leg wire rope bridle assemblies. In addition, they can be used in vertical, choker, and basket hitches.
Synthetic rigging Slings can be broken up into three subcategories, all offering different benefits and drawbacks:
- Synthetic Round Slings
- Synthetic Web Slings
- Synthetic Rope Slings
Synthetic lifting slings can be constructed of either nylon or polyester, with each material offering different properties and benefits. Synthetic rigging slings lead the industry in combined strength, flexibility and support. Synthetic lifting slings are perfect for situations where it is imperative that the load not be damaged by the sling.
Synthetic slings can be configured to fit almost any rigging application. This includes single-leg, 2-leg, 3-leg, and 4-leg synthetic bridle assemblies. Additionally, they can be used in vertical, choker and basket hitches. Due to their ease of use, relative inexpensiveness, standard sizes and replaceability, they are very popular in construction and other general industries.
Metal Wire Mesh Slings
Metal mesh lifting slings, sometimes referred to as wire mesh slings or chain mesh slings are constructed using high-tensile carbon, alloy, or stainless-steel links, arranged in a tightly knit mesh pattern. Wire mesh rigging slings are extremely abrasion and cutting resistant and can also withstand the high temperatures seen in the metal working industry as well as many others. Metal mesh slings are especially useful for securing and lifting unusual or irregular loads due to their wide bearing surface. While they are not quite as versatile as other types of slings, they can be used in vertical, choker and basket hitches.
The leading cause of lifting sling failure, especially in the case of synthetic slings, is cutting and abrasion. Often, in order to get a secure grip on the load, the rigging sling must be wrapped around sharp and/or protruding edges. This puts undue stress on the sling, no matter the type, and can significantly reduce not only your sling's durability but also your sling's WLL (working load limit). Sling protectors like edge guards, wear pads and sling protector sleeves, come in a variety of different shapes, styles and materials but they are all used to lessen the amount of cutting and abrasion forces exerted by a load on whatever sling you decide to use.
Best Rigging Practices
- Crane slings are to be hitched in a manner that provides optimal control of the load
- Sharp edges or protruding edges in contact with a sling are to be padded with material of sufficient strength to protect the crane sling
- Crane slings are to be shortened or adjusted only by methods approved by the sling manufacturer or a qualified person
- When any crane sling is off the ground personnel should be alert for possible snagging. Especially when the sling is empty as it is more prone to snag things it passes by when not lifting a load
- In a basket hitch, the load must be balanced to prevent slippage
- Keep loads in a basket hitch under control by ensuring that the legs of the rigging sling contain or support the load from the sides, above the center of gravity
- In a choker hitch, make sure the choke point is on the crane sling body only, and not on a fitting
- In a choker hitch, angles of choke less than 120° are not to be used without a reduction in the rated load
- Ensure that lifting slings are not constricted, bunched, or pinched by the load, hook, or any fitting
- The load applied to the hook should always be centered in the base of the hook to prevent point loading on the hook, unless the hook is designed for point loading
- Never shorten or lengthen a crane lifting sling by knotting or twisting
- Never rest loads on the rigging sling
- Never pull a rigging sling from under a load when the load is resting on the sling
- Never drag crane slings on the floor or over abrasive surfaces
- Shock loading is never acceptable and can significantly damage your rigging sling
- Always avoid twisting and kinking
Tri-State Rigging Equipment is a custom manufacturer, service provider and distributor for all crane lifting slings serving clients from coast to coast, Canada, Mexico and especially focused in the states of Missouri, Illinois, Indiana, Kansas, Arkansas, Mississippi, Nebraska, Tennessee, Kentucky, Iowa, and Oklahoma.