Petroleum Tanker manufacturers All the major transportation of fuel and liquid products is done through tankers. There are different types of oil tankers – Petroleum, Water, Edible Oil, and Chemical Tankers. Among these the most popular is Petroleum Tankers used to transport petrol, diesel oil and some types of inflammable liquid. These tankers are fabricated according to need and capacity of the customers. These tankers can be big or small, pressurized or non-pressurized, carry single or multiple products.