What should be paid attention to during chamfering - Lamination and inclusion

When processing the pipe end, operators should carefully inspect whether there are laminations and inclusions in the pipe end. Steel pipes are not allowed to have laminations or inclusions that extend to the pipe end or groove surface with a transverse dimension exceeding 6.4mm. Pipe ends with laminations or inclusions exceeding 6.4mm can be re-cut until there are no laminations or inclusions exceeding 6.4mm.