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 and GC2/Class pressure pipeline installation licenses, as well as a mechanical and electrical equipment installation contracting qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and a 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.
The leak treatment methods for liquid argon storage tanks mainly include the following steps:
Discovering Air Leaks: Detected through odors, gas detection instruments, or abnormal pressure in liquid argon storage tanks, air leaks in the liquid argon storage tank are identified.
Confirm air leakage location: Use gas detection equipment or foam leak detection agents, etc., to pinpoint the exact location of air leakage. Inspect tank interfaces, valves, pipe connections, and other areas to locate the air leakage points.
Seal Air Leaks: Take appropriate measures to stop the air leak source based on the leak location. For instance, for leaks at junctions, inspect and adjust sealing washers or tighten bolts; for valve leaks, check and replace the seals.
Isolate Air Leaking Areas: During the process of dealing with air leaks, it is necessary to isolate the leaking areas to ensure personnel safety. Set up warning signs, restrict access to the area, and take necessary protective measures, such as wearing protective masks and gloves.
If air leakage cannot be repaired immediately or the leakage is significant, consider evacuating liquid argon. By gradually reducing the pressure of liquid argon in the storage tank, convert it into gas to minimize the risk of air leakage.
Ventilation Treatment: During the air leak treatment, ensure proper ventilation and promptly remove gases generated from the evaporation of liquid argon. Natural ventilation or the use of ventilation equipment can be employed to expel the vaporized gases of liquid argon outdoors.
Safety Assessment and Repairs: Upon completion of the air leakage treatment, conduct a safety assessment to ensure the tank's safety. Based on the assessment results, carry out necessary repairs and maintenance to prevent a recurrence of air leakage.
Note that liquid argon is a low-temperature liquid with a low boiling and freezing point. Caution is required when dealing with air leaks to prevent contact with liquid argon, which can cause coldness. When handling air leaks in liquid argon storage tanks, it should be operated by personnel and follow the relevant safety operation procedures and standards.

To prevent hazards associated with liquid oxygen tanks, the following precautions can be taken:
Safe Operation and Management: Establish and enforce strict safety operation and management systems, including the proper use of storage tanks, operational procedures, safety training, etc. Ensure operators have the necessary safety awareness and skills, adhere to operational procedures, and reduce the likelihood of operational errors and accidents.
Regular inspections and maintenance: Conduct regular inspections and maintenance on liquid oxygen tanks, including visual inspections, pressure tests, and leak detection. Promptly identify and address any issues with the tanks to ensure their safety and reliability.
Safety Devices and Protective Equipment: Tanks should be equipped with necessary safety devices, such as pressure relief valves and level alarms, as well as protective equipment, like fire barriers and explosion-proof devices. These devices and equipment can take timely measures during abnormal situations to ensure the safety of the tank.
Fire Prevention Measures: Liquid oxygen has a high oxygen content, which is prone to causing fires. Therefore, fire prevention measures such as firewalls and fire extinguishers should be set up around the storage tank to prevent the spread and expansion of fires.
Leakage Control and Emergency Response Plan: Establish a liquid oxygen tank leakage control and emergency response plan, including leakage control measures, emergency response procedures, evacuation plans, etc. In the event of a leakage incident, the plan allows for prompt action to control the leakage and ensure personnel safety.
Training and Awareness Enhancement: Conduct regular safety training for personnel using liquid oxygen tanks to enhance their safety awareness and emergency response capabilities. Strengthen safety

The application of strain-hardening in austenitic stainless steel on low-temperature pressure vessels is a common method, which can enhance the strength and durability of the material. Below is some information regarding the application of strain-hardening in austenitic stainless steel on low-temperature pressure vessels:
Principle of Strain Hardening: Strain hardening involves introducing plastic deformation into materials, which alters the crystal structure, thereby increasing the material's strength. In Austenitic stainless steel, strain can be introduced through methods such as cold working (like cold rolling, cold drawing, etc.) or heat treatment (such as solution treatment and cold deformation), which causes dislocation and grain boundary slip in the crystal structure, thus enhancing the material's strength.
Low Temperature Application Advantages: Austenitic stainless steel exhibits excellent corrosion resistance and low-temperature toughness in cold environments. Strain hardening further enhances the strength and durability of austenitic stainless steel, enabling it to perform in low-temperature pressure vessels. Under low-temperature conditions, strain hardening effectively resists plastic deformation and fracture of the material, improving its tensile strength and impact resistance.
Application Cases: Austenitic stainless steel strain hardening is widely used in low-temperature pressure vessels. For instance, in liquid nitrogen, liquid oxygen, and liquid argon storage tanks, etc., strain-hardened austenitic stainless steel is commonly used as structural material. These vessels must withstand high pressure and impact loads at low temperatures; strain hardening enhances the material's strength and durability, ensuring safe operation of the containers.
It should be noted that the strain hardening of austenitic stainless steel needs to be carried out under appropriate temperatures and deformation conditions to avoid excessive deformation and material embrittlement. When designing and manufacturing low-temperature pressure vessels, it is essential to rationally select and apply the strain hardening properties of austenitic stainless steel based on specific engineering requirements and material characteristics.

The medical oxygen steel cylinder filling area, in addition to the liquid oxygen storage tank, includes the following components:
Oxygen Compressor: Oxygen compressors are used to compress gaseous oxygen into high-pressure oxygen. These compressors are typically made with special materials and designs to ensure safe handling and compression of oxygen.
Oxygen Purification System: The oxygen purification system is designed to remove impurities and contaminants from oxygen, ensuring the purity and quality of the supplied oxygen. The system typically includes filters, absorbents, and molecular sieves.
Oxygen Storage System: In addition to liquid oxygen tanks, an oxygen filling area may also include a gaseous oxygen storage system, used for temporary storage and supply of gaseous oxygen. The gaseous oxygen storage system typically includes high-pressure oxygen cylinders or gas storage tanks.
Filling Equipment: Filling equipment is used to transfer oxygen from liquid oxygen storage tanks or gaseous oxygen storage systems into medical oxygen steel cylinders. The filling equipment typically includes filling machines, filling pipelines, and filling control systems.
Oxygen Quality Monitoring System: The oxygen quality monitoring system is used to monitor the quality and purity of oxygen being filled. Quality testing and supervision of the filled oxygen are conducted through an oxygen analyzer or other detection equipment.
Safety Facilities: The filling plant area should be equipped with corresponding safety facilities, such as fire alarm systems, oxygen leak detection systems, and ventilation systems, to ensure the safety and protective measures during the filling process.
It should be noted that the design and equipment configuration of medical oxygen steel cylinder filling facilities must comply with relevant regulations, standards, and specifications. During the filling process, strict adherence to operational procedures and safety requirements is essential to ensure the safe supply of oxygen.
Our company attaches great importance to technological innovation and research and development, with 1 city-level enterprise technology center in Heze City. We have built non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and other testing facilities. We are equipped with over 600 various 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, etc. The key products and technologies we have developed, such as temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat utilization, have successively been selected for multiple Shandong Province Industrial and Information Technology Department science and technology innovation projects, Shandong Province key projects, and Heze City innovative and excellent projects. We have cumulatively obtained 27 authorized utility model patents, 16 authorized invention patents, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. Our technical team, in collaboration with Professor Yijiang Li of Shandong University, has jointly developed deep cryogenic container processing technology, which utilizes the international plasma arc + filler wire argon arc combination welding (PAW-GTAW) technology. After provincial-level scientific and technological achievement appraisal, the technical level has reached an international standard in the field of deep cryogenic container manufacturing. Choose Zhongjietech for joint creation of brilliance!