Description

Technical Parameters

Alloy Steel Rigging Chain is designed for demanding lifting operations where strength, fatigue resistance, and dimensional accuracy are critical. Unlike ordinary commercial chains, lifting chains are engineered to handle repeated loading, impact forces, and heavy working conditions while maintaining predictable mechanical performance.

Our Alloy Steel Rigging Chains are manufactured from specially selected alloy steel and processed through controlled heat treatment to achieve the required balance between tensile strength, toughness, and wear resistance. Available in Grade 80 and Grade 100 options, these chains are widely used for chain slings, cranes, industrial lifting systems, construction projects, mining equipment handling, and heavy machinery installation.

Technical Specifications

Chain Size (mm)	Grade 80 WLL (Tons)	Grade 100 WLL (Tons)	Proof Load (kN)	Min. Breaking Force (kN)	Approx. Weight (kg/m)
6 mm	1.12	1.40	28.3	45.2	0.80
8 mm	2.00	2.50	50.3	80.4	1.40
10 mm	3.15	4.00	78.5	126.0	2.20
13 mm	5.30	6.70	133.0	212.0	3.80
16 mm	8.00	10.00	201.0	322.0	5.70
20 mm	12.50	16.00	314.0	503.0	9.00
22 mm	15.00	19.00	380.0	608.0	11.00
32 mm	31.50	40.00	804.0	1280.0	23.00

Note: Custom link pitches, non-standard wire diameters, and tight-tolerance calibrated hoist chains are available upon request.

Grade 80 vs. Grade 100 Rigging Chain Comparison

Performance Factor	Grade 80 Rigging Chain	Grade 100 Rigging Chain
Raw Material Base	20Mn2 Manganese Alloy Steel	Advanced Cr-Ni-Mo Alloy Steel
Load Efficiency	Standard high-strength lifting baseline	25% higher WLL compared to same-size G80
Weight Advantage	Industry standard for heavy rigging	Reduced chain weight for easier manual handling
Hardness and Toughness	High core ductility to absorb dynamic impacts	Superior surface hardness with dynamic fatigue resistance
Primary Markets	Rigging suppliers, construction, general lifting	Heavy lifting contractors, mining, offshore projects

Controlled Manufacturing and Quality Assurance Protocol

Spectrographic Material Analysis: Incoming alloy steel rod coils are spectrally verified prior to processing to confirm exact carbon, manganese, chromium, and nickel composition.

Flash Butt Welding and Calibration: Automated continuous forming lines ensure uniform link pitch geometry, full-penetration weld seams, and zero stress-concentration points.

Computerized Quenching and Tempering: Continuous heat treatment establishes an optimal metallurgical structure, combining high tensile strength with an elongation rate exceeding 20 percent to eliminate brittle failure risks.

100 Percent Horizontal Proof Testing: Every meter of finished chain is pull-tested to 2.5 times its Working Load Limit (WLL) on calibrated horizontal test beds before surface coating.

Traceability and Stamping: Permanent raised markings (e.g., "G80" or "G100") are embossed at maximum 20-link intervals, directly tied to your EN 10204 3.1 Mill Test Certificate.

Surface Protection and Custom OEM Capabilities

We support private-label branding, pre-assembled chain slings, and tailored protective finishes for global industrial distributors and OEMs:

Protective Finishes: Black Oxide, Self-Colored, Yellow Zinc Plated, Hot-Dip Galvanized, or Custom Powder Coating.

Custom Sling Assemblies: Factory-assembled 1-leg, 2-leg, 3-leg, and 4-leg chain slings fitted with clevis hooks, master links, and connecting shackles.

Packaging Options: Heavy-duty steel drums, wooden cases, export pallets, or cut-to-length bundles with distributor private labeling and barcoding.

Primary Industrial Applications

Construction and Infrastructure: Tower crane hoist lines, precast element positioning, and heavy structural steel rigging.

Mining and Material Handling: High-abrasion underground equipment maintenance and continuous conveyor systems.

Maritime and Offshore Logistics: Port container lashing systems, shipyard heavy positioning, and offshore deck cargo handling.

FAQ

Q: What documentation is provided with each shipment?

A: Every shipment includes an EN 10204 3.1 Material Test Certificate detailing chemical analysis, 2.5x WLL proof load test results, minimum breaking force verification, and batch manufacturing traceability numbers.

Q: How are your chains marked for field inspection?

A: All Grade 80 and Grade 100 chains feature raised embossed markings ("G80" or "G100") at regular link intervals to facilitate jobsite compliance checking.

Q: What is the practical advantage of specifying Grade 100 over Grade 80?

A: Grade 100 chain provides a 25 percent increase in Working Load Limit compared to Grade 80 chain of identical diameter. This allows riggers to use smaller, lighter chains without compromising safety limits.

Q: What safety factor applies to your rigging chain?

A: Our overhead lifting chains are rated to a standard 4:1 safety factor (Minimum Breaking Strength = WLL x 4) in compliance with EN 818-2 requirements.

Q: Do you offer OEM private labeling and customized cut lengths?

A: Yes. We supply global distributors with private-label drum packaging, custom tag stamping, and precision cut-to-length chain segments for equipment integrators.

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