The 40T chain is suitable for the SGB620/40T scraper conveyor, with a specification of 18 * 64, B-grade specification, and a material of 20Mn. The 18 × 64 specification is also suitable for the SGD420/22 scraper conveyor. Depending on different needs, the 18 * 64 can also be matched with a C-grade chain to increase its service life.

High strength circular chains for mining are mainly used in coal mine scraper conveyors, coal planers, drum cutters, and other mechanical traction chains. The quality and performance of high-strength circular chain used as the traction component of coal mine scraper conveyor will directly affect the working efficiency of the equipment and the coal production of the coal mine. High strength circular chain for mining is a consumable item that is prone to wear and damage during use. Once there is a fracture or damage, it will affect work efficiency. Therefore, in addition to selecting products with reliable quality and technology, it is also necessary to master the correct use and daily maintenance of high-strength circular chain for mining.