Uses: Used for agricultural tractor products, mainly bearing pulling force, transmitting brake signals to brake devices through brake pull rods to realize tractor braking; Features: It is a kind of long rod parts, with connecting interfaces at both ends of the shaft, and the pull rod consists of two sections. The two sections of rods are generally one long and one short, and one end of each section of rod is threaded and the other end is provided with two lifting lugs. The two sections are connected by a long stud in the middle and can be adjusted in length; process requirements: tie rods are generally made of bar stock, usually made of steel bar stock, welded with two lifting lugs, and galvanized as a whole. The main processes include: blanking-turning-welding-electroplating and other processes; Studs are generally made of nuts with hexagonal tubes. The main processes include blanking-turning-electroplating and other processes. The main processing equipment includes numerical control lathe equipment. Key inspection items: thread gauge, appearance and other items; Key inspection equipment: special thread inspection tool;