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, B-grade boiler installation and GB2, GC2 class pressure pipeline installation licenses, as well as mechanical and electrical equipment 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 ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System, and the U.S. ASME/U2 certification.
Operation procedures for liquid oxygen storage tanks should be established based on the specific tank design and usage requirements. Below are some common contents of general operation procedures for liquid oxygen storage tanks: - Operator Training: Ensure operators have received relevant training on liquid oxygen storage tanks, understanding the tank's structure, performance, operational procedures, and safety precautions. - Safety Inspections: Conduct necessary safety inspections before operating a liquid oxygen storage tank, including checking the integrity of the tank, the tightness of valves and pipelines, and the condition of the insulation layer. - Liquid Oxygen Supply: Ensure the liquid oxygen supply system is functioning properly, including checking the status of liquid oxygen supply pipelines, valves, and pressure gauges to ensure an adequate supply. - Tank Pressure Control: Monitor the pressure of the liquid oxygen storage tank to ensure it is within a safe range. If necessary, control the tank pressure by adjusting pressure valves or pressure relief devices. - Leak Control: Regularly check the tightness of the tank and pipelines to ensure there are no leaks. In the event of a leak, take immediate action to control the leak and notify relevant personnel. - Fire Prevention Measures: Prohibit open flames and prevent sparks and high-temperature objects from contacting the tank around the liquid oxygen storage tank. Set up fire prevention facilities and firefighting equipment, and regularly inspect and maintain them. - Safety Distances: Ensure there is a certain safety distance around the liquid oxygen storage tank to prevent the spread of fires, explosions, and leaks. - Maintenance and Inspection: Regularly maintain and inspect the tank, including cleaning the tank, checking the insulation layer, valves, and pipeline conditions, to ensure normal operation. - Waste Disposal: Properly dispose of waste generated by the liquid oxygen storage tank, including residual liquid oxygen, exhaust gases, and waste liquids, in accordance with relevant environmental protection regulations and regulations. Note that operation procedures for liquid oxygen storage tanks should be established based on the specific tank design and usage requirements, and should comply with applicable regulations, standards, and safety guidelines. When operating liquid oxygen storage tanks, cooperation with local regulatory authorities and individuals should be ensured to ensure the safety and reliability of the tanks.

Low-temperature liquid storage tanks are equipment used for storing low-temperature liquids, commonly employed for liquid oxygen, liquid nitrogen, liquid argon, and other low-temperature liquids. These liquids exist as gases at room temperature but are cooled to a liquid state for more efficient storage and use. These storage tanks are typically made of high-strength materials such as stainless steel or aluminum alloy to withstand low temperatures and high pressures. The interior usually features insulation to minimize evaporation and maintain the低温 state. Applications of low-temperature liquid storage tanks include, but are not limited to: They are widely used in rocket fuel and propulsion systems, such as liquid oxygen, liquid nitrogen, and liquid hydrogen tanks, for storing and supplying low-temperature liquids as fuel and oxidizers to propel rockets. Industrial Production: These tanks are used in industrial production for storing and supplying low-temperature liquids like liquid oxygen, nitrogen, and argon, serving as coolants, gases for separation, and raw materials for chemical reactions. Medical Applications: They are used in the medical field for storing and supplying liquid oxygen for oxygen therapy, inhalation, and operating rooms. Laboratory Research: In scientific research and laboratories, these tanks provide low-temperature liquids as coolants and cryogenic media, used for cooling laboratory equipment, material research, superconductivity, and low-temperature physics. In summary, low-temperature liquid storage tanks are extensively used in various fields, including aerospace, industrial production, and laboratory research, for storing and supplying low-temperature liquids to meet diverse needs.

Liquid argon storage tanks are equipment used for storing and transporting liquid argon, featuring the following characteristics:
Low-temperature retention performance: The liquid argon tank is equipped with special insulation materials and structural design, effectively maintaining the low-temperature state of liquid argon. The tank is internally lined with insulation to minimize heat conduction and loss, ensuring long-term storage of liquid argon.
High-sealing performance: The liquid argon storage tank boasts excellent sealing properties, effectively preventing leakage and evaporation of liquid argon. The tank's valves, connectors, and sealing components are precision-designed and manufactured, ensuring reliable sealing performance.
High strength and corrosion resistance: The liquid argon tank is made of high-strength materials, capable of withstanding the high pressure and low temperature of liquid argon. Both the internal and external surfaces of the tank are specially treated for excellent corrosion resistance, able to withstand corrosion and oxidation from liquid argon.
Safety Performance: The liquid argon storage tank is equipped with multiple safety protection measures, including safety valves, pressure sensors, and level monitoring devices. These devices monitor and control the tank's pressure, temperature, and level to ensure the tank operates within a safe range.
Reliability and Stability: The liquid argon storage tank has undergone rigorous design, manufacturing, and testing, offering excellent reliability and stability. The tank is capable of long-term stable storage and transportation of liquid argon, ensuring that the quality and performance of the liquid argon remain unaffected.
Easy to operate and maintain: The liquid argon storage tank is relatively simple to operate and maintain, equipped with easy-to-use valves and fittings. The maintenance work mainly includes regular inspections, cleaning, and repairs, which can extend the service life of the tank.
The performance features of liquid argon tanks make them an essential storage and transportation device for liquid argon, widely used in scientific research, industry, and other fields. When using liquid argon tanks, it is necessary to strictly adhere to relevant operational specifications and safety requirements to ensure safe usage.

The filling process for liquid nitrogen tanks generally includes the following steps:
Preparation: Ensure the tanks and filling equipment are in good condition with no damage or leaks. Check that the insulation layer of the tank is intact and undamaged.
Safety Inspection: Check the tank and its surrounding environment for safety. Ensure there are no flammable materials or other hazardous items around the tank.
Connect equipment: Link the filling equipment to the storage tank. Ensure the connection is securely fastened and leak-free.
Prepare Liquid Nitrogen: Prepare liquid nitrogen supply, ensuring the quality and purity meet the requirements.
Open valves: Follow the operation instructions for the filling equipment, gradually open the corresponding valves to allow liquid nitrogen to flow from the supply source into the storage tank.
Regulate Flow: Adjust the flow control valve of the filling equipment as needed to control the inflow speed of liquid nitrogen. Ensure the flow rate is moderate, avoiding too fast or too slow.
Monitor Liquid Level: Real-time monitoring of the liquid nitrogen level in the storage tank through a liquid level gauge or other level monitoring devices. Ensure the level is maintained within a safe range.
Discontinue Filling: Close the valve of the filling equipment once the liquid nitrogen is filled in the tank or reaches the desired level, halting the addition of liquid nitrogen.
Disconnect connection: Disconnect the filling equipment from the storage tank, ensuring there are no leaks at the connection point.
Safety Inspection: Recheck the tank and its surrounding environment for safety, ensuring there are no leaks or other potential hazards.
The procedure outlined is for general reference only; the actual filling process may vary depending on the specific type of tank and filling equipment. When performing filling operations for liquid nitrogen tanks, please adhere to the relevant operational specifications and safety requirements, and ensure that the operators are trained and skilled in safety measures.
Zhongjie Special Equipment upholds the grand vision of "realizing employees' dreams, creating customer value, and striving for the prosperity and strength of our motherland," and is dedicated to the development of the green energy equipment industry. We commit to society with high-quality, cost-effective products and services!