Oil and gas tank fabrication work involves the design, manufacturing, and assembly of tanks used in the storage and transportation of oil, gas, and other related substances. The process includes cutting, welding, and assembling steel plates to form tanks that are pressure-resistant and leak-proof. These tanks undergo stringent testing for safety, quality, and durability before being installed in refineries, storage facilities, or transportation vessels. Specialized materials and coatings may be used to ensure resistance to corrosion and withstand harsh environments.