Winarno, Rudi, Daryono Daryono, and Moh. Jufri. 2018. “The Influence of Welding Ampere Range to ST-40 Shear Strength With Butt Joint”. Journal of Energy, Mechanical, Material, and Manufacturing Engineering 3 (2):113-18. https://doi.org/10.22219/jemmme.v3i2.7093.