The interior cement mortar lining gives security to the pipeline in two strategies. 1st, It's really a “ cement pipe inside of a metal pipe” , and 2nd, by creating a “ Zone of Alkalinity” . This “ zone” in https://lancemppr921323.mdkblog.com/34913312/the-smart-trick-of-jual-timah-hitam-lembaran-that-no-one-is-discussing