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Material:42CrMo,40Mn2, 27SiMn. The rack rail is forged, located in middle groove side part of scraper conveyor, is walking track shearer. Forging rack rail can satisfy the need of shearer, the general price is cheap, long service life. As for life without higher requirements, and the price is relatively cheap, can choose casting rack. The forging rack rail(pin rail) through multiple sets of process test, research, then identify rack rails(pin rail) heat treatment process is: annealing + normalizing + tempering. Through heat treatment, the impact toughness of material, tensile strength and elongation were increased significantly, the performance indexes exceed the design requirements, the effect is good. We are a substantial private company with a wide range of professional, highly skilled engineers and technicians. We have advanced equipment for machining moulds, steel structure production line and have passed the TS16949, ISO9001, ISO14001 and GB/T28001 system authentication. We have the capability to develop and manufacture all manner of steel structure, precision forged parts. Our total factory yearly production capacity is more than 300 million parts. We warmly welcome both new and old friends from home and abroad to visit our company and allow us to guide you through our facilities.