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Rigging Chains Manufacturer-
Heavy-Duty Alloy Steel Rigging Chains for Professional Lifting & Load Securement

 

As an ISO 9001 certified rigging chain manufacturer, we produce high-tenacity Grade 80 and Grade 100 alloy steel chains engineered for severe industrial lifting environments. Fully compliant with international standards including EN 818-2, ASTM A973, and NACM, our products are direct-supplied to OEM equipment manufacturers, chain sling assemblers, and global industrial distributors.

 

Every production batch undergoes 100% proof load testing at 2.5 times the Working Load Limit (WLL) and automated ultrasonic weld inspection to ensure predictable mechanical performance under high dynamic loading.

 
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Engineered for Critical Lifting & Safety Assurance

 

Continuous Heat Treatment for Dynamic Toughness Uncontrolled heat treatment creates internal embrittlement. Our continuous medium-frequency induction heat treatment process yields a balanced martensitic grain structure. This guarantees an elongation rate of equal to or greater than 20% before fracture, providing critical visual warning signs before overload failure occurs.

 

Precision Pitch Consistency for Machinery Compatibility Irregular chain pitch causes binding in pocket wheels and uneven load distribution across multi-leg chain slings. Our automatic inline pitch calibrators enforce strict dimensional tolerances within plus or minus 0.5mm per pitch, ensuring seamless compatibility with standard master links, clevis hooks, and shortening clutches.

 

Full Batch Traceability Every chain link is legibly embossed with grade markings, manufacturer identification, and batch codes every 11 to 20 links. Full mill test certificates according to EN 10204 3.1 with complete heat chemical analysis and mechanical test data accompany every shipment.

 

Technical Specifications

 

Rigging Chain Type

Material

Standard Compliance

Safety Factor

Typical Applications

Grade 80 Rigging Chains (G80)

20Mn2 Premium Alloy Steel

EN 818-2, ASTM A391, NACM

4:1 or 5:1

Heavy-duty chain slings, construction lifting, industrial maintenance, mining machinery

Grade 100 Rigging Chains (G100)

8620 Cr-Ni-Mo Alloy Steel

EN 818-2, PAS 1061

4:1

Heavy overhead crane systems, offshore lifting equipment, weight-sensitive lifting applications requiring up to 25% higher working load limits than G80

Galvanized Alloy Rigging Chains

Alloy Steel with Hot-Dip Galvanizing (HDG) or Electro-Galvanizing

DIN 5687, ISO 3077

4:1

Marine cargo handling, port operations, coastal infrastructure, outdoor construction sites, and environments requiring enhanced corrosion resistance

Stainless Steel Rigging Chains

AISI 304 / AISI 316 Stainless Steel

DIN 766 / Commercial Specifications

4:1

Food processing equipment, chemical plants, wastewater treatment facilities, pharmaceutical industries, and corrosive marine environments

 

 

Quality Control & Destructive Testing Protocol

Spectrometer Raw Material Inspection: Verifying Carbon, Manganese, Nickel, and Chromium balance before cold drawing.

 

Non-Destructive Weld Defect Detection: Real-time automated sensor monitoring during flash butt resistance welding.

 

100% Proof Load Testing: Every meter of continuous chain is pulled to 2.5 times its WLL to verify weld structural integrity.

 

Destructive Sample Testing: Breaking load and bending tests are conducted on every heat treatment lot to confirm a minimum 4x safety factor.

 

Surface Finish Verification: Salt spray testing up to 500 hours to ensure long-term corrosion resistance for galvanized and coated chains.

Lifting Chain For Chain Slings

 

OEM & Custom Rigging Solutions
 
 
 

Dimensional Variations:

Custom pitch sizes, link wire diameters from 4mm to 32mm, and cut-to-length chain segments.

 
 

Surface Finishes:

Self-color oiled, Black Oxide, Electro-Galvanized, Hot-Dip Galvanized, Yellow Zinc, or Electrophoretic Coating.

 
 

Private Labeling & Marking:

Customized link embossing, aluminum sling ID tags, and private brand packaging.

 
 

Export Packaging Options:

Heavy-duty steel drums, reinforced wooden crates, plastic reels, or barcoded retail pails.

 

 

 

FAQ

 

Q: What is the difference between Grade 80 and Grade 100 rigging chains?

A: Grade 100 provides 25% higher Working Load Limit (WLL) than Grade 80 of the same chain size. This allows for lighter sling designs without sacrificing load capacity or safety margins.

Q: Which standard code applies to your Grade 80 and Grade 100 chains?

A: Our chains comply with EN 818-2, ASTM A973, and NACM standards, engineered with a 4:1 safety factor for dynamic lifting environments.

Q: Are these chains certified for overhead lifting?

A: Yes. Both Grade 80 and Grade 100 alloy chains are fully rated and certified for overhead lifting when used with compatible, rated components per ASME B30.9 and OSHA guidelines.

Q: Do you provide Mill Test Certificates (MTC) and Proof Load reports?

A: Yes. Every shipment includes EN 10204 3.1 Mill Test Certificates and 100% 2.5x WLL Proof Load Test reports detailing heat batch analysis and mechanical properties.

Q: How are your chains marked for batch traceability?

A: Links are legibly embossed with grade markings, batch codes, and manufacturer IDs every 11 to 20 links for complete lifetime traceability.

Q: What surface finish should I choose for outdoor or marine environments?

A: Hot-Dip Galvanized (HDG) coating is ideal for general outdoor construction sites. For extreme marine or chemical environments, AISI 316 stainless steel provides maximum acid and corrosion resistance.

Q: What is the allowable dimensional pitch tolerance?

A: Our automatic pitch calibrators enforce strict tolerances within plus or minus 0.5mm per pitch, ensuring smooth operation with pocket wheels, hooks, and shortening clutches.

Q: Can I request custom marking and OEM packaging?

A: Yes. We support custom link embossing, aluminum sling ID tags, and packaging options including steel drums, wooden cases, or barcoded pails.

 

Request a Technical Quotation & Free Samples

 

Looking for a reliable manufacturing partner for your lifting product line? Our engineering team provides immediate technical consultation, EN 10204 3.1 certificates, and direct-factory pricing.

 

Sample Policy: Free sample lengths available for dimensional, metallurgy, and tensile testing.

 

RFQ Turnaround: Quotations and technical data sheets provided within 12 business hours.

 

Contact us today to discuss your specifications or request an instant quotation.

We're well-known as one of the most experienced rigging chains suppliers in China, featured by quality products and low price. Please feel free to buy discount rigging chains made in China here from our factory. Contact us for more details.

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