Comparison of advantages and disadvantages of metal oil tanks and non-metal oil tanks

Metal oil tanks are containers made by welding steel plates. The common shapes of metal oil tanks are vertical metal cans, horizontal metal cans and spherical metal cans. Vertical metal oil tanks can be divided into truss roof tanks, torque-free roof tanks, beam-pillar roof tanks, vaulted roof tanks, sleeve tanks and floating roof tanks according to the roof structure. Among them, the most commonly used are dome roof tanks, and floating roof tanks. The advantage of metal oil tanks is that it has good storage and tightness, is not easy to leak, can be installed with heating and heat preservation functions, metal oil tanks can withstand higher internal pressure, and large vertical metal oil tanks also have a small footprint and large storage capacity. However, the disadvantage of metal oil tanks is that the heat loss is large. The oil tanks need to be designed and manufactured according to the conditions of the tank building area (ambient temperature, snow load, wind load, foundation endurance) and other factors.

The types of non-metal oil tanks include earth oil tanks, brick oil tanks, stone oil tanks, glass fiber reinforced plastic oil tanks, oil-resistant rubber oil tanks, and so on. Stone oil tanks and brick oil tanks are used in many applications, most of which are used to store crude oil and heavy oil. The advantages of non-metallic oil tanks are that they can save steel, have good corrosion resistance, and have a long service life. However, because non-metal oil tanks are usually built underground or semi-underground, once the foundation collapses, it is easy to rupture the tank and it is difficult to repair.