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, and GB2/Class, GC2/Class pressure pipeline installation licenses, as well as equipment and machinery installation contracting qualifications. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and a council member 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 U.S. ASME/U2 certification.
Material control for low-temperature liquid storage tanks is a critical aspect in ensuring their safety and reliability. Here 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 possess excellent low-temperature resistance and crack resistance, maintaining strength and toughness under low-temperature conditions.
Material Quality Control: Ensure the selected materials meet relevant standards and specifications. Conduct chemical composition analysis, mechanical property tests, and impact tests on materials to confirm 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 and possess good welding properties and crack resistance.
Welding Process Control: Monitor and control welding parameters such as welding current, voltage, and speed to ensure the quality and reliability of weld joints. Methods with low heat input, like pulsed 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 the internal and external metal surfaces of storage tanks to extend their service life. Corrosion-resistant coatings and paints can be used to protect the metal structure of the tank from corrosion damage.
Material Performance Monitoring: Regularly conduct performance monitoring on storage tank materials, such as mechanical property tests,

Liquid Argon Storage Tanks are designed specifically for storing liquid argon, featuring the following parameters, functions, and characteristics:
Parameters:
Tank Capacity: The capacity of liquid argon tanks can be customized to meet requirements, typically available in various sizes such as 500L, 1000L, 2000L, and so on.
Operating Pressure: The operating pressure of liquid argon tanks is typically atmospheric or slightly above atmospheric pressure.
Storage Temperature: Liquid argon storage tanks are typically stored at -196 degrees Celsius, which is the boiling point of argon, maintaining its liquid state.
Function:
Store Liquid Argon: Liquid argon tanks are primarily used for storing liquid argon, maintaining its liquid state at low temperatures for supply and use.
Insulation: The liquid argon storage tank is equipped with insulation materials and structural design to minimize heat conduction and retention, maintaining the low-temperature state of liquid argon.
Safety Control: The liquid argon storage tank is equipped with safety devices such as pressure relief valves and level alarms to ensure safe operation and use.
Features:
High Purity Supply: Liquid argon storage tanks provide high purity liquid argon for applications such as cryogenic storage, gas shielded welding, semiconductor manufacturing, and more.
Long-Term Storage: Liquid argon tanks are designed for long-term storage of liquid argon, extending their service life. By controlling the temperature within the tank and the performance of the insulation layer, the evaporation and oxidation of the liquid argon are slowed down.
Multi-domain Applications: Liquid argon storage tanks are widely used in industries such as industrial, scientific research, and include applications like refrigeration, semiconductor manufacturing, etc.
Environmental Protection & Energy Saving: Liquid argon storage tanks enable efficient storage and utilization of liquid argon, reducing energy waste and environmental pollution.
In summary, liquid argon tanks are designed for storing liquid argon, thermal insulation, and safety.

The filling of a low-temperature liquid nitrogen tank refers to the process of transferring liquid nitrogen from an external supply source into the tank. Below is an explanation of the filling process for low-temperature liquid nitrogen tanks:
Preparation: Prior to filling the liquid nitrogen tank, thorough preparation is required. This includes inspecting the tank's condition and safety, ensuring the interior is clean, free of impurities and contaminants. Additionally, check the quality of the liquid nitrogen supply source and the safety of the supply pipeline.
Connect supply source: Link the liquid nitrogen supply source to the liquid outlet of the storage tank. Ensure the connection is secure and reliable to prevent leaks.
Control Liquid Level: During the bottling process, it's necessary to control the liquid nitrogen level to prevent overfilling or spillage. A liquid level gauge or a liquid level control system can be used to monitor and regulate the liquid level.
Slow injection: The injection of liquid nitrogen should be slow to prevent rapid vaporization and pressure increase. Appropriate valves and flow control devices can be used to regulate the injection speed.
Monitor Pressure: During the canning process, it is necessary to monitor the pressure of the storage tank to ensure it remains within a safe range. Pressure gauges or pressure sensors can be used for monitoring.
Canning completed: Stop the injection of liquid nitrogen when the liquid nitrogen level reaches the predetermined filling amount or the storage tank's capacity limit. Disconnect the connection with the supply source and ensure the tightness of the filling port.
Safe Operation: Adhere to relevant safety regulations and operational guidelines throughout the bottling process. Liquid nitrogen is highly flammable at low temperatures, so operators must wear appropriate personal protective equipment and ensure there are no sources of fire in the operational environment.
When bottling liquid nitrogen, be mindful of its low-temperature characteristics and safety. Ensure safe operation and control during the bottling process to guarantee the safe operation of the storage tank and effective storage of liquid nitrogen.

When using a 50-cubic-liter liquid oxygen storage tank, the following safety issues should be noted:
Tank Pressure Control: Ensure the liquid oxygen pressure within the tank is consistently within the safe range. Monitor and control the tank's pressure to avoid safety risks from either excessively high or low pressure.
Leakage and Fire Prevention: Regularly inspect the tank and associated piping for sealing integrity to prevent oxygen liquid leakage. Oxygen liquid is highly flammable and fire prevention measures must be implemented to ensure no ignition sources are present around the tank.
Explosion-proof Measures: Oxygen in the liquid oxygen storage tank may cause explosion upon contact with flammable materials. Ensure there are no flammable items around the tank and implement explosion-proof measures, such as explosion-proof electrical equipment and static grounding.
Safety valves and exhaust systems: Storage tanks should be equipped with safety valves and exhaust systems to prevent overpressure situations. Ensure the proper functioning of the safety valves and the unobstructed flow of the exhaust systems.
Routine Maintenance and Inspection: Conduct regular maintenance and inspections of the storage tank, including cleaning, coating protection, and anti-corrosion treatment. Ensure the structural integrity and safety of the tank.
Safe Operation and Training: Operators must undergo relevant safety training, familiarize themselves with the safe operation procedures for liquid oxygen tanks, and understand emergency response measures. Adhere to correct operational steps to ensure safe operation.
Environmental Monitoring: Regularly monitor the oxygen concentration and temperature around the storage tank, ensuring environmental safety.
Emergency Preparedness: Develop an emergency response plan, including measures for leaks, fires, and explosions. Equip with appropriate emergency equipment and fire fighting facilities to handle unexpected events.
Above are some safety issues to be aware of when using 50-cubic-liter liquid oxygen tanks. To ensure safety, it is recommended to follow relevant safety regulations and operation guidelines, and seek assistance and guidance from experts when necessary.
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