Standard Requirements: GB12718, DIN22252, PN - G - 46701 Safety Number: 14*50 - C MCB220271 18*64-C MCB220254 22*86-C MCB220250 26*92-C MCB220263 30*108-C MCB220270 34*126-C MCB220266 Application: Coal Mining Coal Machine, Scraper Transport Plane, Scraper Forwarding Machine, Excavator, Coal Striking Machine, etc. d. Main characteristics: the use of international advanced professional automatic manufactured equipment, high-quality alloy steel as raw material, a wide range of products, a full class.