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-freezing 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 of 200,000 square meters. The main workshop spans 83,000 square meters. The company currently employs 710 people, including 247 engineering and technical staff 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, as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Proper management regulations for the use of low-temperature liquid storage tanks encompass the following aspects:
Tank Selection and Installation: Choose an appropriate low-temperature liquid tank and ensure it complies with relevant standards and regulations. The installation of the tank should be carried out by personnel, following the manufacturer's instructions and requirements to ensure stability and safety.
Safety Operating Procedures: Establish and implement safety operating procedures for liquid storage tanks, including start-up, shutdown, filling, venting, and other operational steps. Operators must receive training to understand the characteristics of liquid storage tanks, safety precautions, and emergency response measures.
Safety Equipment and Protective Measures: Tanks should be equipped with necessary safety devices such as pressure sensors, safety valves, and leak detectors to monitor and control the pressure and temperature of the tank. At the same time, operators should wear appropriate personal protective equipment like insulated gloves and protective suits to ensure their safety.
Regular Inspections and Maintenance: Conduct regular inspections and maintenance on low-temperature liquid storage tanks, including checking the tank's appearance, sealing, and corrosion prevention measures. In case of any issues, promptly repair or replace the tank to ensure its proper operation and safety.
Waste Management: Abandoned low-temperature liquid storage tanks should be disposed of in accordance with relevant environmental protection regulations. The residual liquids in the abandoned tanks should be handled properly to avoid environmental pollution.
Tank Records and Tracking: Establish tank usage records, including filling dates, quantities, and usage details. Additionally, it is recommended to set up a tank tracking system for monitoring and managing tank usage and maintenance.
Above are some common management regulations for low-temperature liquid storage tanks. Specific regulations may vary depending on the industry and region. When using low-temperature liquid storage tanks, comply with relevant laws and standards and establish appropriate management measures based on actual conditions.

Protective techniques for liquid nitrogen tanks include the following:
Wear protective gear: When operating liquid nitrogen tanks, it is mandatory to wear appropriate protective gear, including gloves, protective clothing, and non-slip shoes. This gear protects the skin from the low temperature of liquid nitrogen and other hazards.
Avoid direct contact: Liquid nitrogen is extremely cold and can cause chilling. Hence, it is crucial to avoid direct contact with liquid nitrogen, especially with the skin. Use tools or utensils for handling to prevent direct hand contact with liquid nitrogen.
Note ventilation: In the operational area of the liquid nitrogen tank, adequate ventilation must be ensured to exhaust gases produced by the evaporation of liquid nitrogen. Maintain air circulation to avoid excessive oxygen concentration, reducing the risk of fire and explosion.
Prevent Leaks: Regularly inspect the liquid nitrogen storage tank for leaks and equip with leak detectors and alarm systems. In case of a leak, take immediate measures to control and repair it. Avoid potential hazards to personnel and the environment caused by liquid nitrogen leaks.
Fire Prevention Measures: Nitrogen has a low boiling and freezing point, which can easily cause fires. To prevent and contain fires, firewalls and fire-retardant coatings should be installed around liquid nitrogen storage tanks.
Electrostatic Protection: The accumulation of static electricity in liquid nitrogen tanks may cause sparks, increasing the risk of fire. Measures such as using electrostatic conductive materials and anti-static equipment should be taken to reduce the accumulation and release of static electricity.
Regular inspections and maintenance: Conduct regular checks on the condition of liquid nitrogen tanks and related equipment, including valves, pipes, pressure gauges, etc. Ensure the equipment is in good condition without damage, and promptly repair or replace any damaged parts.
Waste Gas Treatment: Liquid nitrogen tanks produce waste gas during operation, which must be appropriately treated.

To ensure the quality of liquid oxygen storage tanks, the following measures can be taken:
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Strictly adhere to relevant standards and specifications: The design, manufacture, and installation of liquid oxygen tanks shall comply with the relevant standards and specifications, such as standards, industry standards, or.
Quality Control and Inspection: Rigorous quality control and inspection are conducted throughout the manufacturing process, including raw material inspection, process monitoring, and finished product testing. Ensure that the materials, welding, and sealing of the storage tanks meet the required standards.
A comprehensive quality management system: Establish and implement a comprehensive quality management system, including quality control plans, quality inspection records, and quality training, to ensure every stage meets quality requirements.
Routine Maintenance and Inspections: Regular maintenance and inspections of liquid oxygen tanks, including cleaning, coating protection, and anti-corrosion treatments, are conducted to extend the tank's service life and ensure its optimal working condition.
Safety Operations and Management: Establish and implement a comprehensive safety operations and management system, encompassing proper tank usage, operational procedures, and safety training, to ensure the safety and reliability of the tanks during use.
Regular Inspections and Assessments: Conduct regular inspections and assessments of liquid oxygen tanks, including visual inspections, pressure tests, leak detection, and as required, non-destructive testing and material analysis, to ensure tank quality and safety.
By implementing these measures, the quality, reliability, and safety of the liquid oxygen tanks can be effectively ensured, meeting usage requirements and standards.

The testing and maintenance procedures for liquid oxygen storage tanks encompass the following aspects:
Visual Inspection: Regularly inspect the liquid oxygen storage tank visually, checking for signs of corrosion, wear, and leakage on the tank surface, ensuring the tank's exterior remains intact.
Pressure Testing: Regular pressure tests are conducted on liquid oxygen tanks to assess their pressure resistance. The tests should be carried out in accordance with relevant standards and regulations to ensure the tank can withstand the designed working pressure.
Leak Detection: Regularly conduct leak detection on liquid oxygen tanks, including using leak detection equipment to inspect the tanks to ensure their sealing performance is good and there are no leak issues.
Cleaning and Coating Protection: Regularly clean and apply protective coatings to liquid oxygen tanks to prevent corrosion and oxidation. Use appropriate cleaning agents during cleaning and avoid substances that react with liquid oxygen. Protective coatings can include anti-corrosion coatings or protective agents.
Regular Maintenance: Perform regular maintenance on liquid oxygen tanks, which includes inspecting and replacing seals, valves, safety devices, etc., to ensure proper operation and reliability.
Safety Training and Operating Procedures: Conduct safety training for personnel using liquid oxygen tanks to ensure they are familiar with the safe operating procedures and precautions, thereby preventing 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.
Note that testing and maintenance of liquid oxygen storage tanks should be conducted by trained personnel and in accordance with relevant safety operating procedures and standards. Additionally, a corresponding testing and maintenance plan should be developed based on the specific conditions and usage requirements of the tank, and executed as planned.
Zhongjie Special Equipment upholds the grand vision of "realizing employees' dreams, creating value for customers, and striving for the prosperity and strength of our motherland," and is dedicated to the development of the green energy equipment industry. We offer society high-value products and services!