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 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 low-temperature liquid with strong refrigerating and asphyxiating properties. When handling liquid nitrogen tanks, appropriate personal protective equipment, such as insulated gloves and protective suits, must be worn. Avoid direct contact with liquid nitrogen to prevent injury or other harm.
Ventilation Environment: Liquid nitrogen, upon evaporation, produces a significant amount of gas which may displace other gases, leading to a decrease in oxygen content in the air. Therefore, when using liquid nitrogen tanks, it is essential to ensure proper ventilation in the operating area to prevent oxygen deficiency.
Tank Inspection: Before initially using a liquid nitrogen tank, 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 repaired or the tank replaced promptly.
Tank Filling: Prior to the first 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 protocols 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 initial use of a 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 conditions, 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 operating procedures and safety measures. If you're unfamiliar with the operation or have any doubts, it's advisable to consult with an expert or seek guidance from 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, applicable in fields such as experiments, research, etc.
Key features and configurations of a 50 cubic meter liquid oxygen storage tank may include the following aspects:
Volume: A 50 cubic meter liquid oxygen tank can store a substantial amount of liquid oxygen.
Structure: Liquid oxygen storage tanks typically feature a double or multi-layered design, filled with insulating material in the middle to reduce heat transfer and evaporation of the liquid oxygen. The tank material is usually stainless steel or aluminum alloy, offering excellent corrosion resistance and low-temperature performance.
Insulation Layer: The insulation layer of liquid oxygen tanks typically employs multi-layered insulating materials, such as polyethylene foam, glass fiber, and vacuum layers, to minimize heat transfer and evaporation of liquid oxygen.
Temperature Control System: Liquid oxygen tanks are typically equipped with a temperature control system to regulate the tank's temperature and maintain the low-temperature state of the liquid oxygen.
Safety Equipment: Liquid oxygen tanks are typically equipped with safety devices such as pressure and temperature sensors, safety valves, etc., to ensure safe operation of the tank.
Note that the use of liquid oxygen tanks must strictly adhere to relevant safety regulations and operational guidelines to ensure safe operation and usage. Liquid oxygen is highly flammable, so fire prevention measures must be taken when using liquid oxygen tanks, and it must be ensured that there are no ignition sources nearby.

The use of low-temperature liquid storage tanks requires attention to the following matters:
Safe Operation: Operators must receive training to understand the tank's operational procedures and safety precautions. Adhere to proper operational steps to ensure safe operation.
Protective Gear: Operators should wear appropriate protective gear, such as thermal suits, gloves, etc., to safeguard themselves from the harm of low-temperature liquids.
Leak Protection: Regularly inspect the seals of tanks and associated pipelines to prevent leaks of low-temperature liquids. Keep the area around the tank clean to avoid debris obstructing leak detection and handling.
Fire Protection: Low-temperature liquids are highly flammable and fire prevention measures must be taken. Keep the storage tank area free from ignition sources, prohibit smoking and open flames. Equip with appropriate fire extinguishing equipment to address fire risks.
Pressure Control: Regularly inspect and maintain the pressure control system of the storage tank to ensure that the pressure inside remains within a safe range. Safety valves and pressure sensors, among other equipment, should operate normally, and abnormal pressure situations should be detected and addressed promptly.
Insulation Protection: Low-temperature liquid storage tanks should be equipped with effective insulation to reduce heat transfer and liquid evaporation. The selection and installation of the insulation 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 are functioning properly.
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 and firefighting equipment.

Material control for low-temperature liquid storage tanks is a crucial aspect for ensuring safety and reliability. The following are some common material control measures:
Material Selection: Choose materials suitable for low-temperature environments, such as low-temperature alloy steel, stainless steel, etc. These materials exhibit 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, featuring good welding properties and crack resistance.
Welding Process Control: Monitor welding process parameters such as welding current, voltage, and speed to ensure the quality and reliability of weld joints. Techniques with low heat input, like pulse welding and laser welding, can reduce the temperature gradient and residual stress in the heat-affected zone.
Corrosion Prevention 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: Regularly conduct performance monitoring of storage tank materials, such as mechanical property tests,
Shandong Zhongjie Special Equipment, welcome customers to visit our factory for business discussions.