Heavy-Duty Leaf Chain Manufacturer | ANSI B29.8 & ISO 4347 Lifting Solutions
Vertical heavy lifting demands uncompromising structural safety and supreme ultimate tensile strength. JINQIU CHAIN, a premier heavy-duty leaf chain manufacturer and supplier, provides complete supply chain services for foreign OEMs, large industrial distributors, dealers, and forklift manufacturing plants worldwide. Operating from our 60,000㎡ ISO-certified manufacturing facility, our industrial leaf chains (LH/BL, AL, and LL series) strictly conform to ANSI B29.8, ISO 4347, and DIN 8152 standards, delivering maximum safety margins for critical material handling applications.
Engineering Precision for High-Tension Lifting Applications
In-House Heat Treatment & Hardening: Through specialized carbonitriding and high-frequency induction hardening, our alloy steel pins achieve maximum surface hardness and core toughness, preventing pin shear under extreme shock loads.
100-Ton Tensile Verification: Every batch of JINQIU leaf chains undergoes rigorous pre-stretching and destructive tensile testing up to 100 tons to guarantee zero sudden fracture in high-load lifting environments.
50+ Professional Engineers: Our technical team offers rapid CAD modeling, custom lacing configurations (e.g., 2x2, 4x4, 6x6), and engineered clevis attachments tailored for forklift masts and hydraulic lifts.
Shot-Peened Plates & Precision Pitch Control: High-density link plates undergo precision blanking and shot-peening to drastically improve fatigue life and resistance to dynamic stress strain.
Reliable Lifting Chain for Forklifts, Port Cranes & Heavy Machinery
Safety and fatigue life are non-negotiable when selecting tension chains. JINQIU’s high-strength leaf chains feature optimized pitch uniformity and pre-lubrication with extreme-pressure synthetic grease to minimize elongation over extended operation cycles. Partnering directly with China's leading chain source ensures global distributors receive competitive factory-direct pricing, stable volume production, and complete OEM/ODM custom manufacturing services.
Leaf Chain Series Technical Overview (ANSI B29.8 / ISO 4347)
| Series Type |
Plate Lacing Options |
Primary Industrial Application |
| BL / LH Series Heavy Duty |
2x2, 2x3, 3x4, 4x4, 4x6, 6x6 |
Forklift masts, container handlers, port machinery, & heavy lifting trucks |
| AL Series Light/Medium Duty |
2x2, 4x4, 6x6 |
Light counter-balance lifts, machine tool counterweights, & balance systems |
| LL Series European Standard |
2x2, 4x4, 6x6 (ISO 4347) |
European forklift equipment, hydraulic elevator lifts, & textile machinery |
Secure your lifting machinery with JINQIU’s high-tensile leaf chain solutions. Contact our engineering consultants today for factory-direct quotes, certified tensile test reports, and custom clevis design support.
√ ANSI B29.8 / ISO 4347 Standards √ 50+ Professional Engineers √ 100-Ton Tensile Verified
√ 60,000㎡ Modern ISO Factory √ Forklift OEM Custom Clevis & Attachments
