Crude Oil Tank

2025-06-05 | More News

1.Classification of Crude Oil Tanks by Structural Form

Vertical Cylindrical Tanks

Fixed Roof Tanks: Simple in structure, suitable for normal temperature and pressure storage (the most common type for crude oil tanks).

Floating Roof Tanks: The floating roof rises and falls with the oil level to reduce volatilization loss, suitable for large-scale tanks (with a capacity of up to 100,000 cubic meters or more).

Horizontal Cylindrical Tanks

Smaller in capacity (usually < 1,000 cubic meters), used for small-to-medium storage or transportation scenarios (e.g., tank trucks, gas stations).

Spherical Tanks

Strong pressure-bearing capacity, suitable for high-pressure storage (e.g., LPG tanks, but less commonly used for crude oil tanks).

2.Core Performance of Crude Oil Tanks

Mechanical Properties

Tensile strength ≥ 400 MPa, yield strength ≥ 245 MPa (e.g., Q245R) to meet load requirements.

Low-temperature impact toughness (e.g., impact energy ≥ 27 J at -20°C) to adapt to different climatic conditions.

Corrosion Resistance

Resistance to hydrogen sulfide corrosion (tested by HIC/SSCC), suitable for high-sulfur crude oil (e.g., SA516 Gr70 (HIC)).

Seawater corrosion resistance (e.g., with added Ni and Cr elements), suitable for coastal storage tanks.

Processability

Good weldability (carbon equivalent Ceq ≤ 0.45%) to support on-site welding.

Cold-rollable forming to adapt to the arc-shaped structure processing of the tank body.

3.What are the typical application scenarios of crude oil tanks?

Oil Extraction Sites: Temporary oil field storage tanks for newly extracted crude oil.
Refineries: Storing crude oil to be processed and regulating the feed rhythm of refining units.
Ports and Terminals: Serving as transfer tanks to connect maritime transportation with pipeline transportation.
Strategic Reserves: National crude oil strategic reserve bases (e.g., large floating roof tank clusters).