Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Development Zone, Heze City, with a registered capital of 50 million yuan and total assets of 500 million yuan. The company has 7 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, with the main workshop spanning 83,000 square meters. It currently employs 710 staff, including 247 engineers and technicians, and 82 intermediate-level technical personnel. 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.
Carbon dioxide tanks are equipment used for storing carbon dioxide gas. They are typically made of high-strength materials with sealed performance to ensure no leakage of stored CO2. The design and capacity of the tanks can be adjusted to meet various application needs. Carbon dioxide tanks are widely used in various fields, including industrial production, food processing, etc. In the industrial sector, they are commonly used for storing and supplying CO2 gas for welding, gas shielding, fire extinguishing, and other processes. In the food processing industry, CO2 tanks can be used to produce carbonated beverages, frozen foods, and more. In the medical field, they are utilized to manufacture medical gases like breathing gases and anesthetic gases. The development and manufacturing of carbon dioxide tanks involve multiple manufacturers and technologies. Different companies may employ different design and manufacturing processes to cater to diverse customer requirements. Moreover, relevant safety standards and regulations must be adhered to ensure the safe operation and usage of the tanks.

When handling CO2 storage tanks, static electricity is a safety issue that needs attention. Here are some methods to avoid static: Grounding: Ensure that the tank and related equipment are properly grounded. Grounding releases static to the ground, reducing the likelihood of static buildup. Use specialized grounding devices and grounding wires to ensure reliable grounding. Antistatic Equipment: Use antistatic equipment such as antistatic clothing, shoes, gloves, etc. These devices help eliminate or reduce static buildup and protect the safety of operators. Avoid Friction: Prevent friction during operation, especially when in contact with substances or flammable gases. Friction generates static, increasing the risk of fire or explosion. Control Humidity: Maintain an appropriate humidity level in the operating environment; higher humidity can reduce the generation and accumulation of static. Use humidifiers or other humidity control devices to adjust the environmental humidity. Avoid Plastic or Rubber Materials: Plastic and rubber materials are prone to static generation; try to avoid using these materials during operation. Choose materials with better antistatic properties for operation. Static Eliminators: Use static eliminators to eliminate or reduce static buildup. Static eliminators neutralize static by releasing charges, reducing the danger of static. Tank Cleaning: Regularly clean the interior of the tank to remove accumulated impurities and dirt. Pay attention to preventing the generation and accumulation of static during the cleaning process. It is important to note that the methods to avoid static should be determined according to the specific operating environment and tank characteristics. During operation, follow relevant safety regulations and standards, and consult with experts if necessary.

Carbon dioxide is widely used as a shielding gas in metal welding processes. Here are the main applications of carbon dioxide in welding: 1. Gas Metal Arc Welding (GMAW): Carbon dioxide is commonly used as a shielding gas in the GMAW welding process. In GMAW welding, the arc generates high temperatures in the welding area, which can also cause oxidation reactions with oxygen and water vapor, leading to reduced weld quality. By injecting carbon dioxide gas into the welding area, a protective atmosphere is formed, preventing oxygen and water vapor from entering, thereby improving the quality and strength of the weld. 2. Mixed Gas Metal Arc Welding (GMAW): Carbon dioxide is also often mixed with other gases (such as argon) to form a mixed gas shielding welding. The use of mixed gases can adjust the arc stability, melt pool formation, and weld quality during the welding process, enhancing the welding effect. 3. Gas Shielded Brazing: Carbon dioxide can also be used in gas shielded brazing processes. During brazing, the carbon dioxide gas provides a protective atmosphere, preventing oxidation and contamination in the brazing area, ensuring the quality of the brazed joints. 4. Gas Shielded Cutting: Carbon dioxide can also be used in gas shielded cutting processes. In gas shielded cutting, by injecting carbon dioxide gas into the cutting area, a protective atmosphere is formed, preventing oxidation and contamination in the cutting area, improving the quality and speed of cutting. It is important to note that the application of carbon dioxide in welding needs to be adjusted and optimized according to specific welding materials, methods, and requirements. When using carbon dioxide for welding, it is necessary to follow relevant safety operation procedures and guidelines to ensure the safety and quality of the welding process.

The reasons for regular inspections of low-temperature liquid carbon dioxide storage tanks are to ensure their safety performance and normal operation. Due to the tanks being in a low-temperature and high-pressure environment, there are certain safety risks, such as leaks and structural failures. Regular inspections can help identify potential issues early, allowing for appropriate repairs or maintenance to ensure safe tank operation. The specific inspection frequency should be determined according to relevant regulations and standards, and it is generally recommended to conduct regular inspections and maintenance. Typically, the interval for regular inspections of low-temperature liquid carbon dioxide storage tanks is between 1 to 3 years, with the exact interval potentially varying based on factors like usage, age, and design standards. The content of regular inspections usually includes visual checks of the tank, inspections of valves and connections, leak detection, and pressure tests. Additionally, regular checks and maintenance of the tank's insulation should be performed to ensure its insulating properties. It is important to note that the specific inspection frequency and content should be determined based on local regulations, standards, and the manufacturer's recommendations. Inspections should be carried out by qualified personnel, and maintenance records should be documented to track and manage the tank's safety performance.
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