Shandong Zhongjie Special Equipment Co., Ltd. (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Development Zone, Heze City, with a registered capital of 50 million yuan and total assets of 500 million yuan. The company has 7 business centers: boilers, deep-freeze containers, pressure vessels, central air conditioning, engineering installation, international trade, and the Internet of Things. It has three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total of 200,000 square meters, with the main workshop area being 83,000 square meters. It currently employs 710 people, including 247 engineering and technical personnel and 82 middle-level technical personnel. In December 2016, it was recognized as a "High-tech Enterprise" by the Science and Technology Department. In June 2021, it was identified as a "Specialized and New Enterprise in Shandong Province" by the Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province" and in August 2022, it was identified as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Determining the design pressure and calculation pressure of a liquid oxygen storage tank requires considering the following factors:
Design Pressure: Design pressure refers to the maximum pressure a tank can withstand under normal operating conditions. When determining the design pressure, factors such as the working pressure range of liquid oxygen, the material strength of the tank, and safety factors need to be considered. Generally, the design pressure should be slightly higher than the high working pressure of liquid oxygen to ensure the tank operates safely and reliably within its normal operational range.
Calculated Pressure: The calculated pressure refers to the actual working pressure of the tank under the design pressure. It is determined by calculating factors such as the properties of liquid oxygen, the geometric shape of the tank, and the material strength. The calculated pressure should consider factors like the expansion coefficient of liquid oxygen, temperature changes, and pressure fluctuations to ensure the safety and stability of the tank under actual working conditions.
Determining the design and operating pressure of liquid oxygen storage tanks typically requires referencing relevant standards and regulations, such as Standard GB150 for "Steel Pressure Vessels" and GB18442 for "Technical Conditions for Storage Tanks of Liquid Oxygen, Nitrogen, and Argon." These standards and regulations provide detailed design and calculation methods to ensure the safety and reliability of the tanks.
In practical applications, the design pressure and calculated pressure of liquid oxygen storage tanks should be calculated and determined by pressure vessel designers. They will consider various factors such as specific engineering requirements, tank dimensions, and materials, to ensure that the tank's design and use comply with relevant safety standards and regulations.

Carbon dioxide tanks and liquid oxygen tanks are containers used for storing different gases, and they have some distinct physical properties:
Physical State: Carbon dioxide is a gas at room temperature and pressure, and it needs to be at low temperatures and high pressures to become a liquid. Liquid oxygen is a liquid at room temperature and requires low temperatures to solidify.
Boiling and Freezing Points: The boiling point of carbon dioxide is -78.5°C, and its freezing point is -56.6°C. The boiling point of liquid oxygen is -183°C, and its freezing point is -218.8°C. The boiling and freezing points of liquid oxygen are significantly lower than those of carbon dioxide.
Density: Liquid oxygen has a higher density, approximately 1.14 grams per cubic centimeter. Carbon dioxide has a lower density, around 0.00198 grams per cubic centimeter. The density of liquid oxygen is about 570 times that of carbon dioxide.
Pressure: Liquid oxygen has a higher pressure, usually ranging from tens to hundreds of MPa. Carbon dioxide has a lower pressure, typically a few MPa.
Safety: Liquid oxygen has a high oxygen content and is prone to cause fires and explosions. Carbon dioxide also poses asphyxiation risks at certain concentrations.
Note that carbon dioxide and liquid oxygen are both flammable and explosive substances. Strict adherence to relevant safety operational procedures and standards, along with necessary safety measures, is required for storage and use to ensure the safety and stability of the storage tanks.

Liquid Argon Storage Tank is a specialized equipment designed for storing liquid argon, featuring the following parameters, functions, and characteristics:
Parameters:
Tank Capacity: The capacity of liquid argon tanks can be customized to meet requirements, with various sizes available, such as 500L, 1000L, 2000L, and so on.
Working Pressure: The working pressure of liquid argon tanks is typically atmospheric or slightly above atmospheric pressure.
Storage Temperature: The storage temperature for liquid argon tanks is typically -196 degrees Celsius, which is the boiling point of argon, maintaining its liquid state.
Feature:
Liquid Argon Storage: Liquid argon tanks are primarily used for storing liquid argon, maintaining its liquid state at low temperatures for supply and use.
Insulation: The liquid argon storage tank utilizes advanced insulation materials and structural design to minimize heat conduction and retain its low-temperature state.
Safety Control: The liquid argon tank is equipped with safety devices such as pressure relief valves and level alarms to ensure safe operation and usage.
Features:
High Purity Supply: Liquid argon tanks offer high purity liquid argon supply to meet application needs such as cryogenic storage, gas shielding welding, semiconductor manufacturing, etc.
Long-term Storage: Liquid argon tanks are designed for long-term storage of liquid argon, extending their service life. By controlling the temperature inside the tank and the performance of the insulation layer, the evaporation and oxidation of liquid argon are slowed down.
Broad Applications: Liquid Argon Storage Tanks are widely used in various fields such as industry and scientific research, including refrigeration and semiconductor manufacturing, etc.
Environmental Protection and Energy Saving: Liquid argon storage tanks enable efficient storage and utilization of liquid argon, reducing energy waste and environmental pollution.
In summary, liquid argon storage tanks are designed for storing liquid argon, thermal insulation, and safety.

Low-temperature liquid storage tanks offer the following features and usage advantages:
Features:
Low-Temperature Storage: Low-temperature liquid storage tanks can store low-temperature liquids (such as liquid nitrogen, liquid oxygen, etc.) at low temperatures, maintaining their liquid state. Liquid storage significantly increases storage density and saves space.
Insulation: The low-temperature liquid storage tanks utilize special insulation materials and structural design to effectively reduce heat conduction and retention, maintaining a stable temperature for the low-temperature liquid. This helps to minimize energy loss and liquid evaporation.
Safety: The low-temperature liquid storage tank boasts excellent safety performance. Constructed with special materials and structural design, it can withstand low temperatures and high-pressure environments. Additionally, the tank is equipped with safety devices such as pressure relief valves and liquid level alarms, ensuring safe operation and use.
Utilization Advantages:
High Purity Supply: Low-temperature liquid storage tanks can provide high-purity liquid substance supply. Through refrigeration and purification processing, high-purity liquid gases can be obtained to meet the requirements of various applications, such as industry and scientific research fields.
Long-term Storage: Low-temperature liquid storage tanks are designed for long-term storage of low-temperature liquids, extending their service life. By controlling the temperature inside the tank and the performance of the insulation layer, the evaporation and oxidation of the liquid can be slowed down, maintaining its stability and purity.
Multi-domain Applications: Low-temperature liquid storage tanks are widely used in industries such as industrial, scientific research, and others. They can be used for storing liquid oxygen to provide oxygen supply; in the industrial sector, they can store liquid gases (LNG) and liquid nitrogen, among other process gases; in scientific research, they can store low-temperature experimental samples.
Environmental Protection and Energy Conservation: Low-temperature liquid storage tanks enable effective storage and utilization of low-temperature liquids, reducing energy waste and environmental pollution. Storage of liquid substances
Zhejiang Zhetong Special Equipment adheres to the grand vision of "realizing employee dreams, creating customer value, and striving for the prosperity and strength of our motherland," and is dedicated to the development of the green energy equipment industry. We commit to society with high-quality, cost-effective products and services!