Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Economic and Technological 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 manufacturing 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. The company currently employs 710 people, including 247 engineers and technicians and 82 intermediate-level technicians. 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, Fine, and New Enterprise in Shandong" by the Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong" and in August 2022, it was identified as a "Specialized, Fine, and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
During the operation of low-temperature storage tanks, it is indeed necessary to avoid wrinkling. Wrinkling refers to the occurrence of creases or deformation in the tank walls, which may lead to a decrease in the structural strength of the tank, and even cause leakage or rupture.
Here are some precautions to avoid squeezing in low-temperature storage tanks:
Tank Design: Select an appropriate tank design that can withstand the pressure and weight of low-temperature liquids. The tank's wall thickness, supporting structure, etc., should comply with relevant standards and specifications.
Material Selection: Choose materials suitable for low-temperature environments, with adequate strength and low-temperature resistance. Common materials include low-temperature steel, stainless steel, etc.
Insulation Layer for Storage Tanks: The design and construction of the insulation layer must meet requirements to ensure effective reduction of heat conduction and temperature variation. The materials and thickness of the insulation layer should be selected based on specific conditions.
Tank Operation: During the loading and unloading of liquids in the tank, avoid rapid or excessive liquid flow to minimize impact and stress concentration on the tank walls.
Tank Maintenance: Regularly inspect and maintain the structure and insulation of the tanks to ensure they are intact. Any abnormalities or damage should be repaired or replaced promptly.
Temperature Control: During the operation of low-temperature liquid storage tanks, it is essential to strictly control the temperature difference between the inside and outside of the tank to avoid excessive temperature changes and thermal stress.
In summary, preventing crimping in low-temperature storage tanks hinges on proper design, material selection, insulation layer installation and maintenance, and strict control of temperature variations. Regular inspections and maintenance are also crucial measures for ensuring the safe operation of the tanks.

Safe operation and transportation of liquid oxygen storage tanks require attention to the following points:
Safe Usage Instructions:
Tank Selection: Choose liquid oxygen tanks that comply with regulations and standards, ensuring their quality and safety performance.
Tanks Installation: Tanks should be installed on a solid foundation to ensure stability. Additionally, good ventilation around the tanks is required, and they should be kept away from flammable materials and heat sources.
Seal Integrity Inspections: Conduct regular checks on the tank's sealing performance to ensure there are no leakage issues at valve and pipeline connections.
Pressure Control: Tanks should be equipped with pressure gauges and safety valves, and regular inspections and maintenance should be conducted to ensure pressure remains within safe limits.
Fire Prevention Measures: Liquid oxygen contains a high concentration of oxygen, which is highly flammable. Set up fire barriers around the storage tanks, ban smoking and open flames, and ensure safety.
Static Protection: During the transportation and use of liquid oxygen, static electricity may cause sparks, increasing the risk of fire. Measures such as using static-conductive materials and anti-static equipment should be taken to reduce the accumulation and release of static electricity.
Shipping Precautions:
Transportation Vehicle Selection: Choose a transportation vehicle that meets the requirements for liquid oxygen transport, ensuring the vehicle's safety and sealing integrity.
Loading and Unloading: During the transportation of liquid oxygen, appropriate loading and unloading procedures should be adopted.

Consider the following aspects to distinguish the quality of liquid nitrogen storage tanks:
Material: Liquid nitrogen tanks typically are made of high-strength, corrosion-resistant materials such as stainless steel or aluminum alloy. These materials offer excellent corrosion resistance and mechanical strength, ensuring long-term stable operation of the tank.
Sealability: The liquid nitrogen storage tank should have excellent sealing performance to effectively prevent leakage of liquid nitrogen. The valves, pipe connections, and other parts of the tank should be designed reasonably to ensure reliable sealing.
Insulation: Liquid nitrogen tanks should have excellent insulation properties to minimize evaporation losses. The insulation layer of the tank should use materials like polyethylene foam to reduce heat conduction and evaporation losses.
Safety: The liquid nitrogen tank should have excellent safety performance, including safety valves, pressure gauges, and other safety equipment, as well as fireproof and explosion-proof functions. The design and manufacturing of the tank should comply with relevant safety standards and regulations.
Service Life: Liquid nitrogen tanks typically have a long service life, capable of withstanding long-term use and transportation. The manufacturer and reputation are also significant factors in assessing the service life.
Price and After-Sales Service: The liquid nitrogen tank should be priced reasonably and come with excellent after-sales service. Choosing manufacturers or suppliers with a good reputation and reliable after-sales support ensures access to quality products and technical support.
Considering these factors, one can differentiate between the pros and cons of liquid nitrogen tanks. When selecting a liquid nitrogen tank, it is recommended to choose one that meets the required specifications based on actual needs and usage environment to ensure safe and reliable storage.

Liquid nitrogen storage tanks feature the following characteristics during the construction process:
Low Temperature Construction: The construction of liquid nitrogen tanks must be carried out in a low-temperature environment, as the boiling point of liquid nitrogen is low, approximately -196 degrees Celsius. Construction personnel must take appropriate protective measures, such as wearing thermal protective clothing and gloves, to protect themselves from low-temperature injuries.
Welding Technology: A substantial amount of welding is required during the manufacturing process of liquid nitrogen tanks, including the connections of the tank walls, bottom plate, top plate, and welds. Welding technology is crucial for the quality and safety of the tank, necessitating the use of appropriate welding methods and materials to ensure the strength and sealing integrity of the welds.
Insulation Layer Installation: Liquid nitrogen tanks must have excellent insulation properties to minimize heat transfer and maintain the low temperature state of liquid nitrogen. The installation of the insulation layer requires materials such as polyester foam and glass wool, ensuring the thickness and quality of the insulation layer.
Proper installation steps for liquid nitrogen tanks are as follows:
Site Preparation: Select an appropriate site for tank installation, ensuring it is level, strong, and capable of supporting adequate load capacity. The site should be kept away from flammable, explosive materials, and other hazardous sources.
Basic Construction: Construction of the foundation based on the tank's dimensions and weight, including excavation of the foundation pit and pouring of concrete foundation. The design and construction of the foundation should comply with relevant standards and specifications.
Tank Installation: Transport the tank to the site and perform a vertical installation. Appropriate lifting equipment and safety measures are required during the installation process to ensure the stability and safety of the tank.
Pipe connections: Connect the storage tank to the relevant pipeline system as required, including intake pipes, exhaust pipes, and liquid supply pipes, etc. Sealing and testing must be performed during the connection process to ensure the safety of the pipes.
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