1. Cracking Inspection method: visual evaluation criteria: Type A defects: cracks that can be noticed by users without training. Stamping parts with such defects are unacceptable to users, and stamping parts must be frozen immediately after discovery. Type B defects: Visible and determinable micro cracks. Stamping parts with such defects are not acceptable in Zones I and II. Repair welding and repairing in other areas is allowed, but the repaired parts are not easy to detect by customers and must meet the stamping requirements. Repair standards for parts. Type C defects: The defects are ambiguous and determined after careful inspection. The stamping parts of this type of defect will be repaired in Zone II, Zone III and IV, but the repaired parts are not easy to be found by customers Read more