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 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 technical personnel. 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.
The materials used for the production of liquid oxygen tanks typically require excellent low-temperature resistance and corrosion resistance. Common materials for the construction of liquid oxygen tanks include:
Stainless Steel: Stainless steel is a common material used for constructing liquid oxygen storage tanks, known for its excellent corrosion resistance and mechanical strength. Common stainless steel grades include 304 and 316 stainless steel.
Aluminum Alloy: Aluminum alloys are also commonly used in the production of liquid oxygen tanks, featuring low density and excellent corrosion resistance. Common aluminum alloy materials include 5083 and 6061 alloys.
Fiberglass Reinforced Plastic (FRP): FRP is a composite material made up of glass fibers and resin. It boasts excellent corrosion resistance and mechanical strength, making it suitable for liquid oxygen storage tanks in special environments.
Carbon Steel: Carbon steel is a common material for tank fabrication, known for its high strength and corrosion resistance. However, it is prone to oxidation in liquid oxygen environments, necessitating anti-corrosion measures.
It's important to note that the choice of material for liquid oxygen storage tanks should be determined based on specific application requirements, working conditions, and safety standards. When selecting materials, consider the properties of liquid oxygen and the design requirements of the tank to ensure safety and reliability. Moreover, manufacturers and suppliers often provide material selection advice and technical support.

Daily inspections of liquid nitrogen tanks should include the following aspects:
Level Check: Regularly inspect the liquid nitrogen tank's level to ensure it remains within the normal range. This can be done using a level gauge or a level ruler, among other equipment.
Pressure Check: Inspect the tank's pressure to ensure it's within the safe range. Pressure gauges or pressure sensors can be used for the inspection.
Insulation Layer Inspection: Check if the insulation layer of the tank is intact, without any damage or detachment. The integrity of the insulation layer is crucial for reducing heat transfer and the evaporation of liquid nitrogen.
Leak Inspection: Check for signs of liquid nitrogen leakage around the tank, such as vapor mist, frost, or freezing. If leakage is detected, take immediate action to repair it.
Valve and pipeline inspection: Verify that the tank's valves and pipelines are functioning properly without any gas leaks or blockages. Ensure the tightness and unobstructed flow of the valves and pipelines.
Safety Device Inspection: Check the storage tank's safety devices, such as pressure relief valves, temperature sensors, and level alarms, to ensure they are functioning properly.
External Tank Cleaning: Regularly clean the exterior surface of the tank to remove dust, dirt, and debris. Maintain the tank's appearance for easy inspection and maintenance.
Tank Records and Documentation: Timely record the inspection results and maintenance records of the tank, including liquid levels, pressure, insulation condition, leakage situations, etc. These records help monitor the tank's operational status and identify issues promptly.
Above is the routine inspection content for liquid nitrogen tanks. Regularly performing these checks ensures the safe and efficient operation of the tanks. At the same time, adhere to the relevant safety regulations and operation guidelines to ensure the safety of personnel and equipment.

Liquid oxygen storage tanks offer the following advantages:
High Storage Density: Liquid oxygen tanks store oxygen in its liquid form, offering a higher storage density compared to gas storage. This means more oxygen can be stored in a limited space, providing extended supply times.
High Purity Oxygen Supply: Liquid oxygen tanks can provide high purity oxygen. After undergoing refrigeration and purification processes, liquid oxygen can achieve high purity to meet the needs of various applications, such as industrial and scientific research fields.
User-friendly: The liquid oxygen tank features ease of use. Equipped with devices such as level gauges and pressure gauges inside, it allows for convenient monitoring of the liquid level and pressure. Additionally, the liquid oxygen tank is fitted with safety devices like pressure relief valves and level alarms to ensure safe operation and usage.
Long-Term Storage: Liquid oxygen tanks are suitable for long-term storage of oxygen. The low-temperature properties of liquid oxygen can slow down the evaporation and oxidation of oxygen, extending its storage life. This is beneficial for applications requiring long-term oxygen storage, such as institutions, laboratories, and industrial production.
In summary, liquid oxygen tanks offer advantages such as high storage density, supply of high purity oxygen, ease of use, and long-term storage. This makes liquid oxygen tanks a reliable choice for oxygen supply and are widely used in industrial and scientific research fields.

When storing liquid nitrogen in a low-temperature storage tank, please be aware of the following points:
Protective Gear: When operating low-temperature storage tanks, it is mandatory to wear appropriate protective gear, including gloves, protective clothing, and non-slip shoes. This gear helps protect the skin from the low temperatures of liquid nitrogen and other hazards.
Avoid Direct Contact: Liquid nitrogen is extremely cold and can cause frostbite. Hence, direct contact with liquid nitrogen, especially with skin, should be avoided. Use tools or implements for handling, preventing hands from coming into direct contact with liquid nitrogen.
Ventilation Requirements: In the operational area of low-temperature storage tanks, adequate ventilation must be maintained to expel gases produced by the evaporation of liquid nitrogen. Ensure air circulation to avoid excessive oxygen concentration and reduce the risk of fire and explosion.
Prevent Leaks: Regularly inspect the low-temperature storage tanks for leaks and equip with leak detectors and alarm systems. In case of a leak, take immediate action to contain and repair it. Avoid the hazards of liquid nitrogen leaks to personnel and the environment.
Fire Prevention Measures: Liquid nitrogen has a low boiling and freezing point, which makes it prone to fires. To prevent and contain fires, firewalls and fire-retardant coatings should be installed around low-temperature storage tanks.
Electrostatic Protection: Static buildup in low-temperature tanks may cause sparks, increasing the risk of fire. Measures should be taken
Shandong Zhongjie Special Equipment, welcome customers to visit our factory for business discussions.