I. G. A. Arwati, T. Izzati, and Z. Arifin, “NATRIUM CARBONATE (NA2CO3) AS INHIBITOR IN THE CORROSION PROTECTION ON STEEL PIPE ST 41 IN WATER PLUMBING ENVIRONMENTAL”, Int. J. Innov. Mech. Eng. Adv. Mater, vol. 2, no. 1, pp. 20–25, Aug. 2016.