High-Strength Round Link Chain Manufacturer | DIN Standard Mining & Conveying Solutions
Extreme underground mining, bucket elevating, and heavy material handling demand ultimate tensile strength, wear resistance, and precise link pitch control. JINQIU CHAIN, a premier round link chain manufacturer and global supplier, provides complete, high-capacity supply chain services for foreign OEMs, large industrial distributors, engineering contractors, and terminal mining plants worldwide. Manufactured in our 60,000㎡ ISO-certified production facility, our high-strength alloy steel round link chains fully conform to DIN 22252, DIN 764, DIN 766, and ISO 1082 standards, delivering uncompromising performance under high abrasion and dynamic loading conditions.
Engineering Precision for Heavy Mining Scrapers, Elevators & Industrial Winches
Automated Flash Butt Welding & Alloy Steel Construction: Produced using high-grade alloy steel (such as 23MnNiMoCr54, 20Mn2) with fully automated robotic bending and flash-butt welding, ensuring 100% seam integrity.
In-House Continuous Induction Heat Treatment: Precision quenching and tempering produce high surface casing hardness and exceptional core impact toughness, preventing brittle fracturing under extreme shock loads.
100-Ton Proof Load & Tensile Verification: Every batch of JINQIU round link chains undergoes magnetic particle inspection (MPI), calibrated proof loading, and destructive tensile testing up to 100 tons to verify total operational safety.
50+ Professional Engineers: Our technical team provides rapid CAD modeling, matched sprocket and shackle selection, calibrated multi-strand length pairing, and custom non-standard chain link customization.
Engineered for Underground Mining AFCs, Bucket Elevators & Marine Winches
Sudden chain breakage in continuous scraper conveyors or vertical bucket elevators leads to catastrophic downtime costs. JINQIU’s alloy steel round link chains feature strict pitch tolerances, high-grade anti-corrosion surface coatings (black oxide, galvanized, or shot-peened), and hot-dip synthetic pre-lubrication to guarantee smooth engagement with drive sprockets. Partnering directly with China's leading chain source ensures global distributors receive competitive factory-direct pricing, stable volume supply, and complete OEM/ODM custom manufacturing services.
Round Link Chain Technical Overview (DIN / ISO Standards)
| Product Standard | Available Grades & Pitch Sizes | Primary Industrial Application |
| DIN 22252 Mining Round Link Chain | Grade 70, 80, 100 (14x50mm to 34x126mm) | Underground mining armored face conveyors (AFC), stageloaders, & coal scrapers |
| DIN 764 / DIN 766 Conveyor Chain | Calibrated / Uncalibrated Alloy Steel (6mm to 32mm) | Heavy bucket elevators, cement ash handling, aggregate scrapers, & marine winches |
| Round Link Attachments & Shackles | Forged Connecting Locks, Bucket Cleats, Shackles | Integrated bulk material handling systems & custom OEM elevator attachments |
Enhance your heavy conveying and mining system operational safety with JINQIU’s engineered round link chains. Contact our technical engineering team today for factory-direct quotes, proof load certificates, and custom CAD technical support.
√ DIN 22252 / ISO 1082 Standards √ 50+ Professional Engineers √ 100-Ton Proof Load Tested
√ 60,000㎡ ISO Certified Base √ Complete Global OEM/ODM Custom Supply Services
