In heavy machinery's track link assembly, the track pins and bushings play a crucial role which makes it necessary to choose the appropriate materials to meet varying application requirements. We are pleased to offer three primary materials: 45# carbon steel, 40Cr, and 20CrMnTi which have been thoughtfully selected based on their distinctive qualities and applicability. We acknowledge that the maintenance of superior quality products is reliant on strict control of raw materials and meticulous heat treatment processes. Therefore, we take utmost care in our material selection and implementation of rigorous heat treatment procedures to produce exceptional track pins and bushings.