Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, A2-grade pressure vessel manufacturing license, A2-grade pressure vessel design license, B-grade boiler installation license, GB2 and GC2 grade pressure pipeline installation licenses, and a mechanical and electrical equipment installation contracting qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the council member of the Shandong Equipment Manufacturing Association. The company has also passed the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System certifications, and the American ASME/U2 certification.
Maintenance and upkeep are crucial for ensuring the safety of low-temperature storage tanks. Here are some common maintenance measures:
Regular Inspections: Conduct regular checks on low-temperature storage tanks, including inspections of the exterior, internal structure, and corrosion-resistant coatings. Look for cracks, corrosion, wear, and other issues, and promptly identify and repair potential safety hazards.
Cleaning and De-icing: Regularly clean the exterior and internal structure of low-temperature storage tanks to remove accumulated dirt and ice layers. The buildup of ice can lead to structural damage and corrosion; cleaning and de-icing can extend the lifespan of the tank.
Level Monitoring: Regularly monitor the liquid level of low-temperature storage tanks to ensure it stays within a safe range. Excessive or low levels can lead to over-pressure or over-vacuum in the tanks, increasing safety risks.
Leak Detection: Install a leak detection system to regularly check for any leakage in the low-temperature storage tanks. Leaks can lead to the release and evaporation of liquids or gases, increasing safety risks.
Corrosion Protection Measures: Implement appropriate corrosion protection measures, such as coating protection and corrosion-resistant coatings, to safeguard the metallic structure of low-temperature storage tanks from corrosion damage.
Emergency Fault Handling: Establish an emergency fault handling mechanism to promptly address and repair issues with low-temperature storage tanks, preventing accidents from occurring or escalating.
Training and Development of Personnel: Train and develop operators and maintenance staff to ensure they possess the relevant knowledge and skills for the correct operation and maintenance of low-temperature storage tanks.
It is important to note that maintenance and upkeep should be tailored to the specific type of storage tank and operating conditions, adhering to relevant local regulations, standards, and specifications. During the maintenance process, it is advisable to consult with engineers or guidance from relevant institutions to ensure the tank's safety and reliability.

Consider the following aspects to distinguish the quality of liquid nitrogen tanks:
Material: Liquid nitrogen storage tanks are typically made of high-strength, corrosion-resistant materials such as stainless steel or aluminum alloy. These materials offer excellent corrosion resistance and mechanical strength, ensuring the tank's long-term stable operation.
Sealability: The liquid nitrogen storage tank should possess excellent sealing performance to effectively prevent any 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 loss. The insulation layer of the tank should use materials like polyethylene foam to reduce heat conduction and evaporation loss.
Safety: Liquid nitrogen tanks 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 capabilities. The design and manufacture of the tank should comply with relevant safety standards and regulations.
Service Life: Liquid nitrogen tanks generally have a long service life, capable of withstanding long-term use and transportation. The manufacturer and reputation of the tank 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 the quality of the products and technical support.
Considering these factors, the quality of liquid nitrogen tanks can be distinguished. When selecting a liquid nitrogen tank, it's recommended to choose one that meets your specific needs and operating environment to ensure safe and reliable storage.

Liquid oxygen storage tanks are widely used in various industries, primarily in the following aspects:
Industry: Liquid Oxygen Tanks are widely used in various fields for storing and supplying liquid oxygen as fuel and oxidizer. Liquid Oxygen Tanks play a crucial role in engines, propulsion systems, and oxygen supply systems.
Chemical Industry: Liquid oxygen storage tanks are used in chemical processes for storing and supplying liquid oxygen, employed in oxidation reactions, combustion reactions, and oxygen supply, etc. Refineries, chemical plants, and manufacturers of chemical products are among those that may utilize liquid oxygen storage tanks.
Industry: Liquid Oxygen Tanks are used in the field for storing and supplying liquid oxygen, utilized for oxygen therapy, respiratory support, and surgeries, etc. Liquid Oxygen Tanks are widely used in institutions such as clinics and nursing facilities.
Experimental Research: Liquid oxygen tanks are used in scientific research and laboratories to provide liquid oxygen as experimental materials and fuel. Liquid oxygen tanks play a crucial role in experimental research across various fields, including physics, chemistry, biology, and materials science.
Metalworking Industry: Liquid oxygen tanks are used in the metalworking and welding industries to supply high-purity oxygen for processes such as metal cutting, welding, and heat treatment.
Other Industries: Liquid Oxygen Storage Tanks are also used in various other sectors, such as the energy, environmental protection, and food industries, among others. These tanks are employed in energy production, environmental management, and food processing fields.
It is important to note that the use of liquid oxygen tanks must strictly adhere to relevant safety regulations and operating guidelines to ensure safe operation and usage of the tanks.

The installation of the safety valve on the liquid oxygen storage tank is a crucial component to ensure that the tank can release pressure in a timely manner during overpressure situations, protecting the tank and related equipment. Below are the steps for installing the safety valve on the liquid oxygen storage tank:
Determine the rated pressure of the safety valve: Select an appropriate safety valve based on the design pressure and flow requirements of the liquid oxygen storage tank. Ensure that the rated pressure of the safety valve meets the tank's specifications and complies with relevant safety standards and regulations.
Valve Installation Location: Select an appropriate location for the safety valve installation. Typically, the safety valve should be mounted on the top or side of the liquid oxygen storage tank to allow for timely pressure release in the event of overpressure.
Preparation for installation interfaces: Prepare the corresponding interfaces based on the connection method of the safety valve. This may include welding interfaces, threaded interfaces, or flange interfaces, etc. Ensure the tightness and firmness of the connections.
Install the safety valve: Mount the safety valve onto the prepared interface. Follow the installation instructions for the safety valve to ensure it is correctly connected and securely fastened.
Adjustment and Testing: After installation, adjust and test according to the requirements of the safety valve. Ensure the opening and closing pressures of the safety valve meet the design specifications, and conduct a leakage test to ensure its sealing.
Connect discharge piping: The discharge piping of the safety valve should be properly connected to the outlet of the safety valve. The discharge piping should have sufficient diameter and flow capacity to ensure effective discharge of overpressure gas when the safety valve is opened.
Labeling and Documentation: Identify relevant information on safety valves and discharge pipes, such as rated pressure, flow rate, and installation date. Additionally, record the installation details and test results of the safety valves for future reference and maintenance.
When installing the safety valve on the liquid oxygen storage tank, it is imperative to follow the relevant safety regulations and operational guidelines. If you lack the necessary experience and knowledge, it is advisable to seek assistance and guidance from a professional to ensure the correct installation and reliable operation of the safety valve.
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