Chain Sling

BaiYi hoisting machinery is a lifting chain sling manufacturer and supplier in China, our high quality chain sling for lifting, also called chain rigging, is a rigid/semi-rigid lifting device assembled from high-strength alloy steel lifting chains, main rings. It’s combine with connecting rings or other metal end fittings. It is the main part for load-bearing component that connects lifting machinery like cranes and hoists and so on. With the lifted object, specifically designed to safely and efficiently for lifting and hoisting or moving worker.

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Product Description

Wholesale customized lifting chain sling from Hebei Baiyi Hoisting Machinery Manufacturing Co., Ltd. Our lifting chain sling strictly allow international standard. The biggest difference between synthetic fiber sling and soft fiber sling is that it belongs to rigid sling. A series of precision welded and heat-treated chain links make up it, so it has extremely high tensile strength and wear resistance.

Due to its body being mainly made of metal materials, high-strength alloy steel chain sling can withstand sharp edge cutting and harsh environments such as high temperature and pressure during use. Therefore, chain slings are widely used in industries such as steel, metallurgy, casting, shipbuilding, ports, and heavy machinery manufacturing.

Parameter

Parameter Category	Parameter	Unit / Format	Description & Significance
Core Identification	Grade / Material	Grade 80, 100, 120	Denotes the alloy steel strength grade. Determines the strength-to-weight ratio and temperature resistance.
	Nominal Chain Size (d)	mm or inch	Diameter of the chain material. The primary factor for load capacity.
	Working Load Limit (WLL)	kg, ton, or lb	The maximum allowable load in a straight, vertical pull configuration. The most critical rating.
Physical Dimensions	Standard Length (L)	m or ft	Length measured between the inner bearing points of the end fittings under tension.
	Number of Legs	Single, Double, Quad, etc.	The configuration of the sling assembly.
	Type of End Fittings	Hook (Clevis Grab, Self-Locking), Master Link, Coupling Link, etc.	The attachments at each end for connecting to the load and lifting device.
Performance & Capacity	Minimum Breaking Force (MBF)	ton	The actual force at which the chain will fail. Typically 4x the WLL for Grade 80 (4:1 Design Factor).
	Maximum Service Temperature	°C (°F)	The maximum continuous ambient temperature the sling can withstand without degradation (e.g., Grade 80: 400°C / 752°F).
	Weight per Unit Length	kg/m or lb/ft	The mass of the chain itself. Important for calculating the net lifting capacity of the crane/hoist.
	Surface Finish / Coating	Self-Colour (Bare), Galvanized, Painted	"Self-colour" is oiled black oxide. Galvanized offers corrosion resistance for outdoor use.
Compliance & Testing	Manufacturing Standard	ASME B30.9, ISO 1835, EN 818-2, etc.	The design and manufacturing standard the product complies with.
	Inspection Standard	ASME B30.9, ISO 4309	References the standard for periodic inspection guidelines.
	Proof Test & Certification	Certificate Provided (Yes/No)	Documentation confirming the assembly was tested (typically to 2x WLL) and meets standards.
Usage Configuration (Critical Factors)	Sling Angle (α)	Degrees from horizontal	The angle of the leg relative to the horizontal. As angle decreases, tension increases dramatically.
	Rated Capacity for Hitch Types	% of Vertical WLL	Basket Hitch: Often 2x Vertical WLL. Choker Hitch: Reduces capacity (e.g., 70-80% of Vertical WLL). Always consult manufacturer ratings.
	D/d Ratio	Ratio	The ratio of the diameter (D) of the item being lifted to the nominal chain diameter (d). A low ratio can reduce capacity.

Features

1 Extremely high strength and durability: The tensile strength of alloy steel chain sling is much higher than that of fiber suspenders.

2 Wear resistant and cutting resistant: not easily cut by sharp edges and corners, with a long service life.

3.High temperature resistance: capable of short-term operation in environments up to 400 ° C (Grade 80) or higher.

4.Good dimensional stability: Almost no extension, precise load positioning.

5.Multifunctionality: The length and combination can be flexibly adjusted by adjusting hooks, connecting rings, etc.

Lifting Chain Sling

FAQ:

Q1: How to choose G80 chain sling, wire rope sling, and synthetic fiber sling?

Chain sling: Preferred for heavy-duty applications with high temperature, severe wear, sharp edges, and low requirements for surface smoothness.

Synthetic fiber sling: It is suitable for surface precision, scratch resistance, light to medium weight loads, good flexibility, lightweight, but afraid of cutting and fire.

Wire rope sling: Between the two, it has high strength, some flexibility, wear resistance, but not as high temperature resistant as chains, and broken wires are not easy to detect.

Q2: How to determine if the chain sling has been scrapped?

The wear of the chain link exceeds 10% of the original diameter.

The elongation of the chain link exceeds 5% of its original length.

Any bending, twisting, cracking, or weld cracking occurs.

The chain sling has experienced severe corrosion or high temperature, resulting in changes in the material of the chain, such as blurriness or thick rust deposits. Or its accessories may deform, such as the opening of the top hook or suspension ring becoming larger.

Q3: How long time should check chain sling?

Usually check it every day or everytime before use, that is very important for safety use for chain sling, so must follow this inspection frequency strictly.

Regular professional inspection: Depending on the frequency of use and environment, it is usually conducted every 6 months to 1 year by professionals for more detailed inspections, which may include magnetic particle testing, etc. Must comply with national or industry safety regulations.

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