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 seven 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. The main workshop spans 83,000 square meters. The company currently employs 710 people, including 247 engineering and technical staff 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.
Before using the liquid oxygen tank, the following preparations must be made:
Safety Inspection: Ensure the tank and its surrounding environment are safe. Check for any damage, leaks, or other potential hazards on the tank. Confirm that there are no flammable materials or other hazardous items in the vicinity of the tank.
Tank Preparation: Inspect the tank's exterior, including the shell, welds, valves, and fittings. Ensure there are no obvious damages or corrosion. Check that the insulation layer is intact and undamaged.
Liquid Oxygen Filling: Utilize liquid oxygen delivery equipment to fill liquid oxygen into the storage tank. Ensure that the flow rate and pressure of liquid oxygen are maintained within a safe range during the filling process.
Pressure Control: Storage tanks should be equipped with pressure control devices to ensure internal pressure remains within safe limits. Inspect and adjust the pressure control devices to ensure proper operation.
Valve Operation: Check that the tank's valves and connections are functioning properly. Ensure the valves operate smoothly and reliably. Adjust the opening and closing status of the valves as needed.
Safety Equipment: Inspect the safety equipment around the storage tank, such as fire separation zones and alarm systems, to ensure they are functioning properly.
Operator Training: Ensure operators are proficient in the safe operation of liquid oxygen storage tanks.

When selecting the base for a liquid argon storage tank, consider the following factors:
Load Capacity: The support must be able to bear the weight of the liquid argon tank. Select a support with adequate load capacity based on the tank's capacity and dimensions. Typically, the weight of the liquid argon tank is provided in the design specifications, which can be used to determine the support's load-bearing capacity.
Stability: The support must provide sufficient stability to prevent the tank from tilting or swaying during operation. The design of the support should take into account the center of gravity location and changes in the tank's center of gravity to ensure stable support.
Corrosion Resistance: Liquid argon is both low-temperature and corrosive, so the support material should have excellent corrosion resistance to prevent corrosion and damage. Common support materials include stainless steel, aluminum alloys, etc.
Insulation: Liquid argon storage tanks typically require thermal insulation. The supports should have certain insulation properties to reduce heat transfer and the evaporation of liquid argon. The design of the supports should consider the installation and protection of the insulation layer.
Installation and Maintenance: The support should feature ease of installation and maintenance for the convenience of tank installation and routine maintenance tasks.
When selecting the foundation for a liquid argon storage tank, it is recommended to consult with engineers or suppliers. Choose a suitable foundation based on the specific tank requirements and operating environment. At the same time, adhere to relevant design specifications and safety standards to ensure the quality and reliability of the foundation.

The testing and maintenance procedures for liquid oxygen storage tanks encompass the following aspects:
Appearance Inspection: Conduct regular visual inspections of the liquid oxygen storage tank, checking for corrosion, wear, and leakage on the tank surface to ensure the tank's appearance remains intact.
Pressure Testing: Regularly conduct pressure tests on liquid oxygen tanks to assess their pressure resistance. The tests should be carried out in accordance with relevant standards and regulations, ensuring the tanks can withstand the designed working pressure.
Leak Detection: Regularly conduct leak detection on liquid oxygen tanks, including using leak detection equipment to inspect the tanks, to ensure their sealing performance is good and there are no leakage issues.
Cleanliness and Coating Protection: Regularly clean and coat the liquid oxygen tanks to prevent corrosion and oxidation. Use appropriate cleaning agents during cleaning and avoid substances that react with liquid oxygen. Coating protection can be achieved with anti-corrosion coatings or protective coatings.
Routine Maintenance: Regularly maintain liquid oxygen tanks by inspecting and replacing seals, valves, safety devices, etc., to ensure normal operation and safety reliability.
Safety Training and Operating Procedures: Conduct safety training for personnel using liquid oxygen tanks to ensure they are familiar with the safe operating procedures and precautions, preventing operational errors and accidents.
Record and Document Management: Establish test and maintenance records for liquid oxygen storage tanks, including test results, maintenance logs, and inspection records, for traceability and management purposes.
Note that the testing and maintenance of liquid oxygen storage tanks should be conducted by trained personnel, adhering to relevant safety operating procedures and standards. Additionally, a specific testing and maintenance plan should be established based on the tank's condition and usage requirements, and executed according to the plan.

When selecting low-temperature liquefied natural gas (LNG) storage tanks, the following factors should be considered:
Tank Types: Common LNG tank types include vertical fixed-roof tanks, spherical tanks, and horizontal tanks. Select the appropriate tank type based on specific application requirements and site conditions.
Tank Capacity: Determine the tank capacity based on the storage requirements and estimated usage of LNG. The tank capacity should meet the expected storage cycle and supply demand.
Material Selection: LNG tanks typically use low-temperature steel or nickel alloy materials to ensure corrosion resistance and strength in low-temperature environments. Select the appropriate material based on the tank's design pressure and temperature requirements.
Safety Performance: LNG tanks should possess excellent safety performance, including seismic resistance, fire resistance, and leak control capabilities. The tanks must comply with relevant safety standards and regulations, such as API 620, EN 1473, etc.
Maintenance and Inspection: Consider the maintenance and inspection requirements for the storage tank, including internal cleaning, coating protection, and corrosion prevention measures. The tank's design should facilitate maintenance and inspection operations to ensure long-term reliable operation.
Environmental Impact: When selecting an LNG storage tank, consideration must be given to its impact on the surrounding environment. The layout and design of the tank should comply with environmental protection requirements, minimizing noise, vibration, and gas emissions, etc., to reduce environmental impact.
Cost-effectiveness: Considering the investment, operational, and lifecycle costs of the storage tank, choose a tank with a favorable cost-performance ratio.
需要注意的是，选型LNG储罐时应遵循相关的和地区的法规、标准和规范。此外，咨询的工程师或储罐制造商，以获取更详细和准确的选型建议。
Zhongjie Special Equipment adheres to the great vision of "realizing employees' dreams, creating customer value, and striving for the prosperity and strength of our motherland," focusing solely on the development of green energy equipment, and devoting products and services with high cost-performance to society!