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A Crude Oil Tank refers to a pressure vessel or atmospheric pressure vessel specifically designed for storing crude oil (liquid petroleum). Its core functions include: Temporary Storage: Storing crude oil temporarily in scenarios such as oil fields, refineries, and ports;Supply and Demand Regulation: Balancing the rhythm differences among crude oil extraction, transportation, and processing;Safe Transportation: Serving as the core storage unit for tank trucks and oil tankers to support long-distance transportation.

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A carbon dioxide storage tank is a container used to store liquid carbon dioxide. Carbon dioxide is typically kept in a liquid state under high-pressure conditions, and such tanks are widely applied in fields such as chemical engineering, food and beverage, pharmaceuticals, and fire protection. Their design must comply with standards for pressure resistance, sealing, and safety protection, and they are equipped with safety accessories like safety valves, pressure sensors, and level gauges to ensure stability and safety during storage and transportation.

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Liquefied petroleum gas (LPG) storage tanks include compressed gas or liquefied gas tanks. According to whether the volume of the container changes, LPG storage tanks can be divided into two categories: fixed volume storage tanks and variable volume storage tanks. Large fixed volume LPG storage tanks are made spherical, while small ones are made cylindrical. Variable volume storage tanks, also known as low-pressure gas storage tanks or commonly referred to as gas holders, have a geometric volume that can change. They are tightly sealed to prevent air leakage and have the functions of balancing air pressure and regulating gas supply, with a general pressure not exceeding 60 MPa.

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LNG storage tanks are specialized pressure vessels used for storing liquefied natural gas (LNG), characterized by extremely high requirements for low temperature, high pressure, and safety reliability. They store LNG at an ultra-low temperature of -162°C to reduce its volume (the volume of LNG is approximately 1/600 of that of gaseous natural gas), facilitating transportation and large-scale storage.