Prasetya J, Ahmad F. Reducing NG Wavy Defects in Slit Coil Processing Using the DMAIC Approach: A Case Study in Steel Manufacturing. jiti [Internet]. 2026 Jul. 7 [cited 2026 Aug. 14];25(01):52-6. Available from: https://journals2.ums.ac.id/jiti/article/view/15335