Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Economic and Technological 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 vessels, pressure vessels, central air conditioning, engineering installation, international trade, and the 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. Currently, there are 710 employees, 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.
When first using a liquid nitrogen tank, there are several precautions to consider for safe and efficient operation. Here are some suggested precautions:
Safe Operation: Liquid nitrogen is a cryogenic liquid with strong refrigerating and asphyxiating properties. When handling liquid nitrogen tanks, appropriate personal protective equipment must be worn, such as insulated gloves and protective suits. Avoid direct contact with liquid nitrogen to prevent injury or other harm.
Ventilation Environment: Liquid nitrogen, upon evaporation, produces a significant amount of gas that may displace other gases, potentially reducing the oxygen content in the air. Therefore, when using liquid nitrogen tanks, it is crucial to ensure adequate ventilation in the operational area to prevent oxygen deficiency.
Tank Inspection: Before the first use of a liquid nitrogen tank, it is essential to carefully inspect the tank's appearance and sealing. Ensure there are no visible damages, leaks, or other safety hazards. If any issues are found, they should be addressed promptly, either by repairing or replacing the tank.
Tank Filling: Prior to the initial use of a liquid nitrogen tank, it is necessary to fill the tank with liquid nitrogen. During the filling process, follow the correct operational steps and safety procedures to ensure a safe and reliable filling. Additionally, pay attention to controlling the filling speed and pressure to avoid excessive tank pressure and temperature rise.
Labeling and Documentation: Prior to the first use of the liquid nitrogen tank, relevant information should be labeled on the tank, such as the storage medium, capacity, manufacturing date, etc. It is also recommended to establish a usage record for the tank, including filling dates, filling amounts, usage details, etc., for future traceability and management.
Note that the use of liquid nitrogen tanks involves safety risks such as low temperatures and high pressures. Operators should receive training and strictly adhere to the relevant operational procedures and safety measures. If unfamiliar with the operation or have any doubts, it is recommended to consult with experts or relevant institutions.

A 50-cubic-meter liquid oxygen tank refers to a storage tank with a capacity of 50 cubic meters. Liquid oxygen tanks are commonly used for storing and supplying liquid oxygen, used in fields such as laboratory research, etc.
Key features and configurations of a 50 cubic meter liquid oxygen storage tank may include the following aspects:
Volume: The 50 cubic meter liquid oxygen tank has a capacity of 50 cubic meters, allowing for the storage of large quantities of liquid oxygen.
Structure: Liquid oxygen tanks typically feature a double or multi-layered design, filled with insulating material in between to minimize heat transfer and evaporation of the liquid oxygen. The tank material is usually stainless steel or aluminum alloy, offering excellent corrosion and low-temperature resistance.
Insulation Layer: The insulation layer of liquid oxygen storage tanks typically employs multi-layered insulation materials such as polyethylene foam, glass fiber, and vacuum layers to minimize heat transfer and evaporation of liquid oxygen.
Thermal Control System: Liquid oxygen tanks are typically equipped with a thermal control system to regulate the tank's temperature, maintaining the低温 state of liquid oxygen.
Safety Equipment: Liquid Oxygen Tanks are typically equipped with safety devices such as pressure sensors, temperature sensors, and safety valves to ensure safe operation of the tank.
It is crucial to strictly adhere to the relevant safety regulations and operational guidelines when using liquid oxygen tanks to ensure their safe operation and usage. Liquid oxygen is highly flammable, so fire prevention measures must be implemented and it is essential to ensure there are no ignition sources around the tank.

The use of low-temperature liquid storage tanks requires attention to the following matters:
Safe Operation: Operators must receive training to understand the procedures and safety precautions for the storage tank. Adhere to the correct operational steps to ensure safe operation.
Protective Gear: Operators must wear appropriate protective gear, such as thermal suits, gloves, etc., to safeguard themselves from injuries caused by low-temperature liquids.
Leak Prevention: Regularly inspect the seals of storage tanks and associated pipelines to prevent leakage of low-temperature liquids. Keep the area around the tanks clean to avoid debris hindering the detection and handling of leaks.
Fire Protection: Low-temperature liquids are highly flammable and fire precautions must be taken. Maintain a fire-free environment around storage tanks, prohibit smoking and open flames. Equip with appropriate fire-fighting equipment to address fire risks.
Pressure Control: Regularly inspect and maintain the pressure control system of the storage tank to ensure the pressure inside is within a safe range. Safety valves and pressure sensors, among other equipment, should operate normally, and abnormal pressure conditions should be detected and addressed promptly.
Insulation Protection: Low-temperature liquid storage tanks should be equipped with an effective insulation layer to reduce heat transfer and liquid evaporation. The selection and installation of the insulation layer should comply with relevant standards and requirements.
Regular inspections and maintenance: Conduct regular checks of the tank's exterior and interior condition, including inspecting for leaks, corrosion, wear, or other damage. Pay special attention to the tank's interfaces, valves, and pipelines, ensuring they operate normally.
Emergency Preparedness: Develop an emergency response plan, including measures for leaks, fires, and other unforeseen incidents. Operators should be familiar with the emergency response plan and be equipped with appropriate emergency equipment and firefighting supplies.

Material control for low-temperature liquid storage tanks is a critical aspect in ensuring the safety and reliability of the tanks. Here are some common material control measures:
Material Selection: Choose materials suitable for low-temperature environments, such as low-temperature alloy steel and stainless steel. These materials offer excellent low-temperature resistance and crack resistance, maintaining strength and toughness under low-temperature conditions.
Material Quality Control: Ensure that the selected materials meet relevant standards and specifications. Conduct chemical composition analysis, mechanical property tests, and impact tests on the materials to ensure their performance meets design requirements.
Welding Material Selection: Choose welding materials suitable for low-temperature environments, such as low-temperature welding rods or welding wires. The welding materials should match the tank material, offering excellent welding properties and crack resistance.
Welding Process Control: Control welding process parameters, such as welding current, voltage, and welding speed, to ensure the quality and reliability of weld joints. Welding methods with low heat input, like pulse welding and laser welding, can reduce the temperature gradient and residual stress in the welding heat-affected zone.
Corrosion Protection Measures: Apply corrosion-resistant treatments to both the internal and external metal surfaces of the storage tank to extend its service life. Options include corrosion-resistant coatings and paints to safeguard the tank's metal structure from corrosion.
Material Performance Monitoring: Regular performance monitoring of storage tank materials, such as mechanical property tests,
Shandong Zhongjie Special Equipment, welcome customers to visit our factory for business discussions.