A: (1) The surface of each part of the tie rod should be free of cracks. Burrs and sharp edges, the processing parts must not have depressions. Obvious bumps; non-machining should not be folded. Defects such as oxidation and corrosion;
(2) Grease nozzles need to be protected. For ball joints with maintenance-free technology, the ball studs are allowed to have no grease nozzles;
(3. When connecting the two ends of the joint dust cover, the ball pin cone surface needs to take protective measures).