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 has 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 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 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.
Consider the following aspects to distinguish between the good and bad of liquid nitrogen tanks:
Material: Liquid nitrogen tanks are commonly 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 tanks.
Sealability: The liquid nitrogen storage tank should have excellent sealing performance to effectively prevent leaks 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 possess excellent insulation properties to minimize evaporation losses. The insulation layer of the tank should utilize materials like polyethylene foam to reduce heat conduction and evaporation losses.
Safety: The liquid nitrogen storage tank should possess excellent safety features, including the installation of safety valves, pressure gauges, and other safety equipment, as well as fire-resistant and explosion-proof functions. The design and manufacture of the tank must comply with relevant safety standards and regulations.
Service Life: Liquid nitrogen tanks typically have a long service life, capable of withstanding prolonged use and transportation. The manufacturer and reputation are also significant factors in assessing the service life.
Price and After-Sales Service: The price of liquid nitrogen tanks should be reasonable, and excellent after-sales service is provided. Choosing manufacturers or suppliers with a good reputation and reliable after-sales service ensures access to high-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 of liquid nitrogen.

The testing and maintenance operations for liquid oxygen storage tanks encompass the following aspects:
Visual Inspection: Conduct regular visual inspections of the liquid oxygen storage tank, checking for any issues such as corrosion, wear, and leakage on the tank's surface, to ensure the tank's appearance remains intact.
Pressure Testing: Regular pressure testing of liquid oxygen tanks is conducted to assess the tank's pressure-bearing capacity. The tests should be carried out in accordance with relevant standards and specifications, ensuring the tank can withstand the designed working pressure.
Leak Detection: Conduct regular leak detection on liquid oxygen tanks, including using leak detection equipment to inspect the tanks, to ensure the tanks' sealing performance is good and there are no leak issues.
Cleanliness and Coating Protection: Regularly clean and coat liquid oxygen tanks to prevent corrosion and oxidation. Use appropriate cleaning agents during cleaning and avoid substances that react with liquid oxygen. Coating protection can be achieved with anti-corrosion coatings or protective coatings.
Regular Maintenance: Perform regular maintenance on liquid oxygen tanks, including inspections and replacements of seals, valves, safety devices, etc., to ensure normal operation and safety.
Safety Training and Operating Procedures: Conduct safety training for personnel using liquid oxygen tanks, ensuring they are aware of the safety operating procedures and precautions to prevent operational errors and accidents.
Documentation and Record Management: Establish test and maintenance records for liquid oxygen storage tanks, including test results, maintenance logs, and inspection records, for traceability and management purposes.
It's important that the testing and maintenance of liquid oxygen storage tanks be conducted by trained personnel, following relevant safety operation procedures and standards. Additionally, a corresponding testing and maintenance plan should be developed based on the tank's specific conditions and usage requirements, and executed according to the plan.

Chengjie Special Equipment Co., Ltd. is a company specializing in the manufacturing of low-temperature liquid storage tanks. They offer a range of low-temperature liquid storage tanks in various specifications and capacities, including liquid nitrogen tanks, liquid oxygen tanks, liquid argon tanks, and more.
The Zhongjie low-temperature liquid storage tank is made with high-quality materials and advanced manufacturing techniques, ensuring the tank's strength and sealing integrity. The internal design incorporates special insulation materials and structure, effectively reducing liquid evaporation losses.
The Zhongjie special-purpose low-temperature liquid storage tank features the following characteristics:
High safety: Tanks are made of materials with excellent pressure resistance and sealing properties, capable of safely storing low-temperature liquids.
Low evaporation loss: Insulation materials and structural design inside the tank effectively reduce liquid evaporation loss, enhancing the tank's economic efficiency.
A variety of specifications and capacities available: Zhongjie provides a range of low-temperature liquid storage tanks in various specifications and capacities to meet the diverse needs of our customers.
Customized Design: Based on our clients' specific requirements, ZJ Special Equipment can offer customized design and manufacturing services to cater to various application scenarios.
Quantity Manufacturing Process: Zhongjie's state-of-the-art manufacturing equipment and technical team ensure the quality and performance of the storage tanks.
In summary, ZJET's low-temperature liquid storage tanks for special equipment offer high safety, low evaporation loss, and a variety of specifications, making them suitable for storage and transportation needs of low-temperature liquids.

Liquid Argon Storage Tanks are equipment used for storing and transporting liquid argon, featuring the following characteristics:
Low-temperature retention performance: The liquid argon tank utilizes special insulation materials and structural design to effectively maintain the low-temperature state of liquid argon. The tank is internally equipped with an insulation layer, reducing heat conduction and loss, ensuring long-term storage of liquid argon.
High-sealing performance: The liquid argon tank boasts excellent sealing capabilities, effectively preventing leakage and evaporation of liquid argon. The tank's valves, fittings, and seals, etc., are designed and manufactured with precision, ensuring reliable sealing performance.
High strength and corrosion resistance: The liquid argon tank is made of high-strength materials, capable of withstanding the high pressure and low temperature of liquid argon. Both the internal and external surfaces of the tank are specially treated for excellent corrosion resistance, able to withstand corrosion and oxidation from liquid argon.
Safety Performance: The liquid argon storage tank is equipped with multiple safety protection measures, including safety valves, pressure sensors, and level monitoring devices. These devices monitor and control the tank's pressure, temperature, and level to ensure the tank operates within a safe range.
Reliability and Stability: The liquid argon storage tank has been rigorously designed, manufactured, and tested, offering excellent reliability and stability. The tank can securely store and transport liquid argon for extended periods without compromising its quality or performance.
Easy to operate and maintain: The liquid argon storage tank is relatively simple to operate and maintain, equipped with valves and fittings that are easy to use. The maintenance work mainly includes regular inspections, cleaning, and repairs, which can extend the lifespan of the tank.
The performance characteristics of liquid argon storage tanks make them crucial for the storage and transportation of liquid argon, widely used in scientific research, industry, and other fields. When using liquid argon storage tanks, it is essential to strictly adhere to operational specifications and safety requirements to ensure safe use.
Our company attaches great importance to technological innovation and research and development design. We have 1 municipal-level enterprise technology center in Heze City, with test facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and more. We are equipped with over 600 various instruments and equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, plasma welding machines, and more. Our key products such as temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat recovery have successively been shortlisted for multiple Shandong Provincial Department of Industry and Information Technology science and technology projects, key projects in Shandong Province, and Heze City innovation and excellence projects. We have accumulated 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technical team of our company, in collaboration with Professor Li Yajiang of Shandong University, has jointly developed deep cryogenic container processing technology using the international plasma arc + wire feeding tungsten inert gas arc welding (PAW-GTAW) technology. After provincial-level scientific and technological achievement appraisal, the technology level has reached an international standard in the field of deep cryogenic container manufacturing. Choose ZJ Special Equipment, and let's create brilliance together!