Our company is specilizing in the coal equipment with an annual output of 2-10 million tons.producing a series of high-pressure the ball, can be adjustable hydraulic, enhance  pressure strength, all-round use of 65 manganese, chromium nine second-Mo Forging, more than 60 hardness, wear an exclusive deal with the use of high technology, improve the service life 5-8 times.This equipment is mainly used for coal processing, coal, coke at the end of iron ore, iron oxide skin, refractory material, etc.