[待更新] Coal Tar Enamel (Plastisized Pitch) (AWWA-C-203 & BS***GR -120/5),Coal Tar Primer (AWWA-C-203 & BS***GR -120/5), Coal Tar Pitch, Coal Tar Modulateas ONGC, Assam Gas Company and lndian Oil for its Coal tar based anticorrosive pipeline coating pr...