[Mining High Strength Ring Chain] using high strength carbon manganese steel processing, structural stability, strong by towing capacity. Mainly used scraper conveyor, plow machines and other mining machinery parts traction. [Zaozhuang Fuxing Mine Equipment Co.] ore production reached the national standard quality ring chain, and the National Coal Safety Center certified. I am in the national coal safety certification center ring chain models: Φ14 * 50 * 15-B, Φ14 * 50 * 15-C, Φ18 * 64 * 15-B, Φ18 * 64 * 15-C and so on. Ring chain grading standard is the minimum and maximum breaking elongation, load, divided into B-class and C-class. [Φ18 * 64 * 15] in which 18 representatives of the straight edge ring diameter; 64 on behalf of the pitch; 15 represents the number of rings (the specific number of rings can be used in special circumstances according to the customers).