Sukarjo, Heribertus, and Adi Surahman. 2017. “Pengaruh Korosi Terhadap Kekuatan Tarik Macaroni Tubing P110 1.900" X 4.19 Lbs Ft”. Jurnal Engine: Energi, Manufaktur, Dan Material 1 (1):1-10. https://doi.org/10.30588/jeemm.v1i1.223.