Shandong Zhongjie Special Equipment Co., Ltd. (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 vessels, pressure vessels, central air conditioning, engineering installation, international trade, and the Internet of Things. It has three manufacturing sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total of 200,000 square meters, with the main workshop area at 83,000 square meters. It currently employs 710 staff, 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 Department of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province" and in August 2022, 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 to 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 appearance, including the shell, welds, valves, and fittings. Ensure the tank has no obvious damage or corrosion. Check that the insulating layer is intact and undamaged.
Liquid Oxygen Filling: Utilize liquid oxygen transfer equipment to fill the tank with liquid oxygen. Ensure that the flow rate and pressure of the liquid oxygen are maintained within safe limits during the filling process.
Pressure Control: Tanks should be equipped with pressure control devices to ensure the internal pressure of the tank remains within a safe range. Inspect and adjust the pressure control devices to ensure proper operation.
Valve Operation: Inspect the tank valves and connections for proper operation. Ensure the valves open and close smoothly and reliably. Adjust the valves' open and closed states 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 support for a liquid argon tank, consider the following factors:
Load Capacity: The support must be capable of bearing the weight of the liquid argon tank. Select a support with adequate load capacity based on the tank's volume and dimensions. Typically, the weight of the liquid argon tank is specified in the design specifications, which can be used to determine the support's load capacity.
Stability: The support must provide sufficient stability to prevent the tank from tilting or swaying during use. The design of the support should take into account the center of gravity of the tank and its changes to ensure stable support.
Corrosion Resistance: Liquid argon has low temperature and corrosive properties, so the support material should have excellent corrosion resistance to prevent corrosion and damage. Common support materials include stainless steel, aluminum alloy, etc.
Insulation: Liquid argon storage tanks usually require insulation to maintain temperature, and the supports should possess certain insulation properties to reduce heat transfer and evaporation of the 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 to facilitate the tank's installation and routine maintenance tasks.
When selecting the foundation for a liquid argon tank, it's advisable to consult with engineers or suppliers. Choose the appropriate foundation based on the specific tank requirements and operating environment. Additionally, adhere to relevant design codes and safety standards to ensure the foundation's quality and reliability.

The testing and maintenance procedures for liquid oxygen storage tanks encompass the following aspects:
Visual Inspection: Conduct regular visual inspections of the liquid oxygen storage tank, checking for issues such as corrosion, wear, and leakage on the tank surface to ensure the tank's exterior remains intact.
Pressure Testing: Regular pressure tests of the liquid oxygen storage tank are conducted to assess the tank's pressure resistance. The tests should be performed in accordance with relevant standards and regulations, ensuring the tank can withstand the designed working pressure.
Leak Detection: Regularly conduct leak detection on liquid oxygen storage tanks, including using leak detection equipment to inspect the tanks to ensure their sealing performance is good and there are no leakage issues.
Cleaning and Coating Protection: Regularly clean and apply protective coatings to liquid oxygen tanks to prevent corrosion and oxidation. Use appropriate cleaning agents during cleaning and avoid substances that react with liquid oxygen. Protective coatings can include anti-corrosion coatings or protective coatings.
Regular Maintenance: Regularly maintain liquid oxygen tanks by inspecting and replacing seals, valves, safety devices, etc., to ensure normal operation and safety.
Safety Training and Operating Procedures: Conduct safety training for personnel using liquid oxygen tanks, ensuring they are familiar with the safety operating procedures and precautions to prevent operational errors and accidents.
Documentation and Record Management: Establish testing and maintenance records for liquid oxygen storage tanks, including test results, maintenance logs, and inspection records, for traceability and management purposes.
It is important to note that the testing and maintenance of liquid oxygen tanks should be conducted by trained personnel, following relevant safety operating procedures and standards. Additionally, a specific testing and maintenance plan should be developed 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 anticipated usage of LNG. The tank capacity should meet the expected storage duration and supply needs.
Material Selection: LNG tanks are typically made of low-temperature steel or nickel alloys 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 have excellent safety performance, including seismic resistance, fire resistance, and leak control capabilities. The tanks must comply with relevant safety standards and specifications, such as API 620, EN 1473, etc.
Maintenance and Inspection: Consider the maintenance and inspection requirements of the storage tank, including internal cleaning, coating protection, and anti-corrosion measures. The tank design should facilitate maintenance and inspection operations to ensure long-term reliable operation.
Environmental Impact: When selecting LNG tanks, consider their impact on the surrounding environment. The layout and design of the tanks should comply with environmental protection requirements, minimizing noise, vibration, and gas emissions, etc.
Cost-effectiveness: Consider the investment, operational, and lifecycle costs of the tank to select one 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 upholds the great 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 offer society products and services with high performance and cost-effectiveness!