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The High Strength Welded G80 Lifting Load Chain is a premium, industrial-grade lifting component engineered for safe, reliable, and heavy-duty load handling across diverse industrial environments. As a core part of material handling systems, it adheres to the ISO 3077 (G80) international standard— the benchmark for high-performance lifting chains—ensuring exceptional strength, durability, and compliance with global safety regulations.
1. Core Material & Welding Craftsmanship
High-Quality Alloy Steel: Constructed from heat-treated alloy structural steel (e.g., 20Mn2 or 23MnCrNiMo54), the chain undergoes precise quenching and tempering processes. This treatment enhances its tensile strength, yield strength, and resistance to wear and impact, enabling it to withstand harsh working conditions (e.g., heavy loads, temperature fluctuations).
Precision Flash Butt Welding: Each chain link features a seamless, high-integrity flash butt weld—far superior to traditional manual welding. The welding process is computer-controlled to ensure uniform fusion of link ends, eliminating weak points (e.g., cracks, porosity) and guaranteeing consistent load-bearing capacity across every link.
2. G80 Grade Performance & Safety
As a G80-class lifting chain, it delivers industry-leading performance and safety margins, critical for preventing load failure:
Strength Metrics: Typical working load limits (WLL) range from 0.5t to 100t (depending on chain diameter, e.g., 6mm chain = 0.8t WLL; 26mm chain = 25t WLL). The minimum breaking load (MBL) is 4 times the WLL (4:1 safety factor), exceeding lower grades (e.g., G60 = 3:1 safety factor) to handle unexpected shock loads.
Fatigue Resistance: The heat-treated surface and smooth link contours reduce stress concentration, enabling the chain to withstand repeated lifting cycles (up to 10,000+ cycles) without fatigue cracking—ideal for continuous-use applications (e.g., factory assembly lines, port container handling).
3. Durability & Environmental Adaptability
Corrosion Protection: Available with multiple surface treatments to suit harsh environments:
Black Oxide Coating: For general industrial use, providing basic rust resistance and low friction.
Hot-Dip Galvanization: For outdoor or humid environments (e.g., construction sites, marine applications), offering long-term protection against saltwater and moisture.
Nickel-Plating: For cleanroom or food-processing industries, ensuring corrosion resistance and compliance with hygiene standards.
Abrasion Resistance: The hardened steel surface (Rockwell hardness HRC 30-35) resists wear from contact with hooks, shackles, or rough loads, extending the chain’s service life by 30% compared to non-hardened alternatives.
4. Application Scope
Designed for seamless integration with standard lifting accessories (e.g., G80 hooks, shackles, chain slings, hoists), it is widely used in:
Heavy industry (steel mills, automotive manufacturing, machinery moving).
Construction (crane lifting of concrete structures, steel beams).
Mining & energy (hoisting equipment parts, mineral containers).
5. Quality Assurance & Compliance
Every High Strength Welded G80 Lifting Load Chain undergoes rigorous quality control before shipment:
Individual Load Testing: Each chain is pressure-tested to 1.5 times its WLL to verify structural integrity.
Visual & Dimensional Inspection: Links are checked for uniform size, weld quality, and surface defects (e.g., burrs, deformation) using precision gauges.
Certifications: Complies with ISO 3077, EN 818-2 (European standard), and ANSI ASME B30.9 (U.S. standard), with each chain accompanied by a test certificate for traceability (batch number, WLL, MBL, inspection date).
6. Usage & Maintenance Recommendations
To maximize safety and service life:
Never exceed the rated WLL or use damaged chains (e.g., bent links, cracked welds).
Inspect the chain before each use for signs of wear, corrosion, or deformation.
Lubricate regularly with high-pressure lithium grease to reduce friction and prevent rust.
Store in a dry, ventilated area to avoid moisture damage.
This G80 lifting chain combines high strength, durability, and safety to be the preferred choice for industrial professionals seeking reliable load-handling solutions.
Since its establishment in 2005, Qingdao Jincheng Maritime Technology Co., Ltd. has been steadily advancing in the maritime technology field for nearly two decades. The company focuses on the core business of manufacturing marine supplies, always adhering to the concepts of innovation and excellence... Since its establishment in 2005, Qingdao Jincheng Maritime Technology Co., Ltd. has been steadily advancing in the maritime technology field for nearly two decades. The company focuses on the core business of manufacturing marine supplies, always adhering to the concepts of innovation and excellence...
