Shandong Zhongjie Special Equipment (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 Internet of Things. It operates three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total area of 200,000 square meters, with the main workshop spanning 83,000 square meters. It currently employs 710 staff, including 247 engineers and technicians, and 82 intermediate-level technicians. Recognized as a "High-tech Enterprise" by the Science and Technology Department in December 2016, as a "Specialized and New Enterprise of Shandong Province" by the Department of Industry and Information Technology in June 2021, as a "Gazelle Enterprise of Shandong Province" in June 2022, and as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology in August 2022.
The safe distance between liquid oxygen storage tanks and buildings is typically dictated by relevant safety standards and regulations to ensure a safe distance and fire separation between the tank and the building. The following is a reference for the general safe distance between liquid oxygen storage tanks and buildings:
Horizontal Clearance: The horizontal clearance between the liquid oxygen storage tank and the structure is typically required to maintain a certain distance to prevent danger in case of tank leakage or accidents. The specific clearance distance should be determined based on factors such as the tank's capacity, pressure, and the nature of the structure, with a general recommendation to maintain a safe distance.
Vertical clearance: The vertical clearance between the liquid oxygen storage tank and the building must also meet relevant safety requirements. This is to prevent any danger to the building in case of tank leakage or accidents. Specific clearance requirements will be determined based on factors such as the tank's capacity, pressure, and the height of the building, with a general recommendation to maintain a certain safety distance.
Fireproof separation: Liquid oxygen has a high oxygen content and flammability, and in the event of a leak or accident, it may cause a fire. Therefore, a certain fireproof separation is required between liquid oxygen storage tanks and buildings to ensure that the fire does not spread or pose a danger to the structures. Specific fireproof separation requirements

Low-temperature liquid storage tanks (such as liquid nitrogen, liquid oxygen, liquid argon, etc.) offer several advantages:
High-density Storage: Low-temperature liquid storage tanks can convert gases into liquids, significantly enhancing storage density. Compared to gas storage, liquid storage allows for more material to be stored in a smaller space, improving storage efficiency.
Low Temperature Retention: Low-temperature liquid storage tanks feature excellent insulation properties, effectively maintaining the low temperature state of the liquid. The design and construction of the insulation layer reduce heat conduction and loss, keeping the liquid at low temperatures and minimizing evaporation and waste.
Supply: Low-temperature liquid storage tanks offer a stable supply of liquids. With internal pressure control and pipeline system design, precise liquid supply can be achieved to meet industrial production and laboratory requirements.
Safety: Low-temperature liquid storage tanks offer a high level of safety. Compared to gas storage, liquid storage reduces the risks of gas leakage and explosion. Tanks are typically equipped with safety devices, such as pressure relief valves and level alarms, to ensure timely measures can be taken in abnormal situations, ensuring the safety of the tank.
Multi-functional Applications: Low-temperature liquid storage tanks are widely used in various fields, such as industrial production and scientific research. Low-temperature liquids like liquid nitrogen and liquid oxygen can be utilized for freezing, refrigeration, and gas supply, meeting diverse industry needs.
Overall, low-temperature liquid storage tanks offer advantages such as high-density storage, temperature retention, supply, safety, and multi-functional applications, providing reliable liquid storage and supply solutions for various industries.

Liquid nitrogen tanks are widely used in meat freezing. The following are several main applications of liquid nitrogen tanks in meat freezing:
Rapid Freezing: Liquid nitrogen tanks can provide low temperatures to quickly freeze meat to the desired temperature. Due to the low-temperature properties of liquid nitrogen, the temperature of the meat can be rapidly reduced in a short period, effectively preserving the quality and texture of the meat.
Chilled Storage: Liquid nitrogen tanks are suitable for long-term freezing storage of meat products. Placing meat in a liquid nitrogen tank can maintain it at low temperatures, preventing the growth of bacteria and microorganisms, and extending the shelf life of the meat.
Chilled Transportation: Liquid nitrogen tanks are suitable for the cold transportation of meat products. Placing the meat in a liquid nitrogen tank maintains its低温 state, ensuring the quality and freshness of the meat throughout the transportation process.
Chilled Processing: Liquid nitrogen tanks can be used for meat chilling. By exposing meat to liquid nitrogen, the surface can be quickly frozen, forming a frost layer, thereby preserving the meat's moisture and nutritional content.
Chilled Processing: Liquid nitrogen tanks are used for the freezing process of meat. Placing meat in liquid nitrogen makes it harder and more brittle, facilitating cutting, slicing, and processing.
It is important to note that when using liquid nitrogen tanks for meat freezing, relevant safety operating procedures and guidelines must be followed. Ensure that operators are equipped with the necessary safety awareness and operational skills to prevent accidental incidents. Additionally, consult with food safety experts.

Material control for low-temperature liquid storage tanks is a critical aspect for ensuring safety and reliability. Here are some common material control measures:
Material Selection: Choose materials suitable for low-temperature environments, such as low-temperature alloy steel, stainless steel, etc. These materials possess excellent low-temperature resistance and crack resistance, maintaining strength and toughness under low-temperature conditions.
Material Quality Control: Ensure the selected materials meet relevant standards and specifications. Conduct chemical composition analysis, mechanical property tests, and impact tests on materials to ensure they meet design requirements.
Welding Material Selection: Choose welding materials suitable for low-temperature environments, such as low-temperature welding rods or welding wires. The welding materials should match the tank material, offering excellent welding properties and crack resistance.
Welding Process Control: Monitor welding process parameters such as current, voltage, and welding speed to ensure the quality and reliability of weld joints. Methods with low heat input, such as pulse welding and laser welding, can reduce the temperature gradient and residual stress in the heat-affected zone.
Corrosion Protection Measures: Apply corrosion-resistant treatments to the internal and external metal surfaces of storage tanks to extend their service life. Options include corrosion-resistant coatings and paints to safeguard the metal structure of the tank from corrosion.
Material Performance Monitoring: Regularly monitor the performance of storage tank materials, such as mechanical property tests,
Our company attaches great importance to technological innovation and research and development. We have one municipal-level enterprise technology center in Heze City, with testing facilities for non-destructive testing, physical and chemical tests, welding tests, hydrostatic tests, etc. We are equipped with over 600 pieces of equipment including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property test machines, chemical analyzers, spectrometers, tensile test machines, plasma welding machines, and more. The key products we have developed, such as thermal-pressure vessel welding, biomass boiler emissions reduction, and waste heat utilization, have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, Shandong Provincial key projects, and Heze City innovative and excellent projects. We have accumulated 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. Our technical team, in collaboration with Professor Li Yajiang of Shandong University, has jointly developed deep cryogenic container processing technology, which utilizes the international plasma arc + wire-in-tube tungsten inert gas (PAW-GTAW) welding technology. After the provincial-level scientific and technological achievement appraisal, the technical level has reached international standards in the field of deep cryogenic container manufacturing. Choose ZJ Special Equipment, and let's create brilliance together!