It is widely used for the connection between the ore ring chains used in the underground scraper conveyor, transfer machine, etc. in the material selection, high-quality alloy structural steel materials are used for manufacturing, forging blank is used, and the link is heat treated and pre stretched to ensure the quality.

The connecting link is divided into: connecting ring, saw ring, arc ring, ring and flat ring. It is suitable for the connection between the ring chains with stripe strength. Coal mine used for scraper conveyor, scraper transfer machine and plough

The specification of open connection ring for power plant is in accordance with the standard of open link inspection specification for mining ring chain (MT / T 415-1995), which is applicable to the inspection of connecting ring specified in MT 71 and is under the jurisdiction of scraper conveyor branch of Technical Committee for standardization of special equipment of coal mine.

High strength chain and scraper are often used together to transport ore in mines, while link is widely used to connect high strength link of mining equipment. In the mining production, the use of scraper conveyor in the working face shows that the breaking of the link is one of the main factors affecting the operation efficiency of the conveying machinery. Open link is a widely used form of link, which has the characteristics of high strength and convenient use. Due to the complex shape of connecting ring and the connection mode of body assembly cross pin, it is necessary to machine the blank after forging. Because the open link is irregular in shape and difficult to clamp, the machining difficulty is increased