Two coke drums, which are very critical components used in petroleum refineries to upgrade and convert petroleum residue into more valuable lighter distillate products, were commissioned by NIS (Naftna Industrija Srbije) for their Bottom of the Barrel Delayed Coker Unit Project and have been manufactured by WTB in 10 months.

The items of about 30 meters in length, over 7 meters in width and 175 tons of weigh each were loaded from the Port of Oltenița, Romania at the end of December 2017. They crossed the Danube for about 800 Km until Azotara Special Port (Serbia), in order to reach their final destination in Pančevo Oil Refinery (Belgrade), Serbia.