Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, an A2-grade pressure vessel manufacturing license, an A2-grade pressure vessel design license, a B-grade boiler installation license, and GB2/Class, GC2/Class pressure pipeline installation licenses, as well as an equipment and machinery installation contracting qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the director unit of the Shandong Equipment Manufacturing Association. The company has also passed certifications for the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System, and the American ASME/U2 certification.
Liquid oxygen storage tanks are widely used in various industries, primarily in the following aspects:
Industry: Liquid Oxygen Tanks are widely used in fields for storing and supplying liquid oxygen as fuel and oxidizer. Liquid Oxygen Tanks play a crucial role in engine, 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. These tanks are utilized by chemical plants, oil refineries, and manufacturers of chemical products, among others.
Industry: Liquid Oxygen Tanks are used in the field for storing and supplying liquid oxygen, which is employed in oxygen therapy, respiratory support, and surgeries, etc. Liquid Oxygen Tanks are widely used in hospitals, clinics, and care facilities, among other institutions.
Research Studies: 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.
Metal Processing Industry: Liquid oxygen storage tanks are used in the metal processing and welding industries to provide high-purity oxygen for processes such as metal cutting, welding, and heat treatment.
Other Industries: Liquid Oxygen Storage Tanks are also applied in various other industries such as the energy, environmental protection, and food industries, etc. They are used 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.

During the use of low-temperature liquid storage tanks, the following points should be noted:
Protective Gear: When handling low-temperature liquid storage tanks, it is mandatory to wear appropriate protective gear, including gloves, protective clothing, and non-slip shoes. This gear safeguards the skin from damage caused by low-temperature liquids.
Avoid direct contact: Low-temperature liquids can be very cold and may cause chill. Therefore, avoid direct contact with low-temperature liquids, especially with the skin. Use tools or equipment for handling, and prevent hands from coming into direct contact with low-temperature liquids.
Ventilation Requirements: In the operational area of low-temperature liquid storage tanks, adequate ventilation must be ensured to expel gases produced by the evaporation of low-temperature liquids. Maintain air circulation to avoid excessive oxygen concentration, and reduce the risk of fire and explosion.
Prevent Leaks: Regularly inspect the leakage conditions of low-temperature liquid storage tanks, and equip them with leakage detectors and alarm systems. In case of leakage, take immediate measures to control and repair the leak. Avoid the hazards of low-temperature liquid leaks to personnel and the environment.
Fire prevention measures: Due to their low boiling and freezing points, low-temperature liquids are prone to cause fires. Measures such as installing firewalls around low-temperature liquid storage tanks and using fire-retardant coatings are taken to prevent fires from occurring and spreading.
Static Protection: Handling low-temperature liquids may generate static electricity, increasing the risk of sparks causing fires. Measures such as using static-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 low-temperature liquid storage tanks and related equipment, including valves, pipelines, pressure gauges, etc. Ensure that the equipment is in good condition with no damage, and promptly repair or replace any damaged parts.
Waste Gas Treatment: During the process of using low-temperature liquids, waste gas is produced, and appropriate waste gas treatment measures must be taken to minimize environmental impact.
Above are the precautions to be noted when using low-temperature liquid storage tanks, ensuring operational safety and the normal operation of the tank. During operation, strict adherence to relevant operational procedures and safety requirements should be followed, avoiding...

Nitrogen flushing in liquid nitrogen tanks refers to the process of injecting nitrogen gas into the tank to increase the concentration and pressure of nitrogen inside, in order to meet certain safety requirements and operational objectives. Here are some precautions to consider when nitrogen flushing liquid nitrogen tanks:
Safe Operation: Prior to conducting nitrogen charging on a liquid nitrogen tank, it is mandatory that operators possess relevant safety knowledge and skills. Operators should wear appropriate personal protective equipment, such as safety goggles, gloves, and protective clothing.
Nitrogen Quality: Utilize high-purity nitrogen for inerting operations to ensure the quality and purity of the nitrogen. Low-purity nitrogen may contain impurities or oxygen, which could have adverse effects on the liquid nitrogen within the storage tank.
Nitrogen Inerting Speed Control: During the nitrogen inerting process, the inerting speed should be controlled to avoid being too fast or too slow. Excessive inerting speed can lead to overly high internal pressure within the tank, while too slow a speed may result in extended inerting time.
Pressure Monitoring: During the nitrogen charging process, the internal pressure of the tank should be regularly monitored. Ensure the internal pressure of the tank remains within the safe range and adjust as necessary.
Temperature Control: During the nitrogen blanketing process, it is important to monitor and control the tank's temperature. The low temperature of liquid nitrogen can lead to condensation and frost on the tank and pipelines. Appropriate measures such as heating or insulation should be taken to prevent condensation and frost from occurring.
Post-nitrogen flushing treatment: After the nitrogen flushing operation is completed, the flushing unit should be promptly turned off, and the tank should be inspected and cleaned. Ensure there is no residual nitrogen or impurities inside the tank.
Note: Nitrogen charging operations for liquid nitrogen tanks must be strictly adhered to the relevant safety standards.

Liquid Oxygen Low-Temperature Storage Tanks are primarily used for storing and supplying liquid oxygen, with their application methods varying based on specific needs and scenarios. Here are some common applications of Liquid Oxygen Low-Temperature Storage Tanks:
Applications: Liquid Oxygen Low-Temperature Storage Tanks are widely used in the field for cryogenic preservation of biological samples, cells, tissues, and vaccines. Institutions such as biopharmaceutical research organizations and biobanks utilize these tanks to store and protect these biological materials.
Experimental Research: Liquid Oxygen Low-Temperature Storage Tanks are used to provide low-temperature environments in scientific research and laboratories, for cryogenic preservation and experiments. These tanks play a crucial role in experimental research across various fields, including physics, chemistry, biology, and materials science.
Industrial Applications: Liquid oxygen low-temperature storage tanks are used in industrial fields to provide low-temperature cooling for processes such as metal processing, welding, and heat treatment. These tanks can supply low temperatures, enabling metals to achieve the required hardness and toughness during processing.
Food Industry: Liquid Oxygen Low-Temperature Storage Tanks are used in the food industry for freezing and refrigerating products such as frozen meats, fruits, and seafood. The low temperature of liquid oxygen can quickly freeze food, preserving its freshness and quality.
Liquid oxygen cryogenic storage tanks are used in the field for storing and supplying liquid oxygen as fuel. As a high-energy fuel, liquid oxygen is widely used in the propulsion systems of engines and vessels.
During the operation of liquid oxygen low-temperature storage tanks, it is crucial to strictly adhere to relevant safety regulations and operational guidelines to ensure the safe operation and use of the tanks. Liquid oxygen is highly flammable, so fire prevention measures must be taken when using liquid oxygen low-temperature storage tanks, and it must be ensured that there are no ignition sources in the vicinity of the tank.
Our company highly values technological innovation and R&D design, boasting one municipal-level enterprise technology center in Heze City. We have established testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc., and are equipped with over 600 types of 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. The key products we have developed, such as temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat recovery, 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 Innovation and Excellence Projects. We have cumulatively obtained 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 Yijiang Li of Shandong University, has developed deep cryogenic vessel processing technology using the international plasma arc + filler wire argon arc welding (PAW-GTAW) technology. After provincial-level scientific and technological achievement assessment, the technology level has reached international standards in the field of deep cryogenic vessel manufacturing. Choose ZJ Special Equipment, let's create brilliance together!