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. The main workshop spans 83,000 square meters. It currently employs 710 people, 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 is widely used as a shielding gas in metal welding processes during welding. The following are the main applications of carbon dioxide in welding: Gas Metal Arc Welding (GMAW): Carbon dioxide is commonly used as the 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 a decrease in 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. Mixed Gas Shielding Welding (GMAW): Carbon dioxide is also often mixed with other gases (such as argon) to form mixed gas shielding welding. The use of mixed gases can adjust the arc stability, molten pool formation, and weld quality during the welding process, enhancing the welding results. Gas Shielded Brazing: Carbon dioxide can also be used in the gas shielded brazing process. 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. Gas Shielded Cutting: Carbon dioxide can also be used in the gas shielded cutting process. 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 the cut. 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 operating procedures and guidelines to ensure the safety and quality of the welding process.

Carbon dioxide storage tanks are equipment used for storing carbon dioxide gas. They are typically made from high-strength materials with sealing capabilities to ensure no leakage of stored CO2. The design and capacity of the tanks can be adjusted to meet specific requirements for various applications. Carbon dioxide storage tanks are widely used across industries, including industrial production and food processing. In the industrial sector, they are commonly used to store and supply CO2 gas for welding, gas shielding, and fire extinguishing processes. In the food processing industry, they are utilized to produce carbonated beverages and frozen foods. In the medical field, they can be used to manufacture medical gases such as breathing gases and anesthetic gases. The development and manufacturing of carbon dioxide storage tanks involve multiple manufacturers and technologies. Different companies may employ various design and manufacturing processes to cater to diverse user needs. Additionally, safety standards and regulations must be adhered to ensure the safe operation and use of the tanks.

The reasons for not allowing a CO2 cylinder to be left empty for long periods are mainly as follows: 1. Safety Risks: CO2 is a high-pressure gas and remains in a liquid state only when maintained at a certain pressure inside the cylinder. Long-term release of CO2 from the cylinder into the atmosphere can lead to a drop in internal pressure, potentially causing structural failure or explosions, posing safety risks. 2. Resource Waste: CO2 is a valuable resource with extensive applications in industries and other sectors. Keeping a CO2 cylinder empty for a long time results in waste of resources, which contradicts the principles of sustainable development. 3. Environmental Impact: CO2 is a greenhouse gas, and long-term emptying of CO2 cylinders increases atmospheric CO2 concentration, exacerbating climate change and environmental issues. Therefore, to ensure safety, conserve resources, and protect the environment, CO2 cylinders should be used and managed in accordance with prescribed procedures and requirements, avoiding long-term empty storage. When CO2 in the cylinder is no longer needed, appropriate disposal methods should be adopted, such as recycling, reuse, or safe discharge.

The internal structure of carbon dioxide storage tanks typically includes the following main components: Tank Shell: The tank shell is the primary container for storing carbon dioxide, commonly made of carbon steel or stainless steel. The shell is designed to be sufficiently strong and sealed to withstand internal pressures and loads. Lining Layer: To prevent direct contact between carbon dioxide and the tank shell, which can lead to corrosion and contamination, the interior of the tank is usually lined with a protective layer. The lining is typically made from corrosion-resistant materials such as fiberglass or polyester resins. Support Structure: To support the tank's weight and maintain stability, a support structure is often installed within the tank. This can include support legs or frames to support the bottom and side walls of the tank. Internal Fittings: The tank is also equipped with important fittings such as level gauges, pressure sensors, temperature sensors, and safety valves. These fittings are used to monitor and control the liquid level, pressure, and temperature within the tank to ensure safe operation. Relief Device: To prevent excessive internal pressure, the tank is usually fitted with a relief device, such as a safety valve. When internal pressure exceeds the set value, the relief device automatically opens to release pressure, safeguarding the tank. Inlet and Outlet Piping: The tank also contains inlet and outlet piping for the injection and discharge of carbon dioxide. These pipes are typically connected to external supply or consumption systems to facilitate the storage and use of carbon dioxide. The above outlines the general internal structure of carbon dioxide storage tanks, with specific structural design and configurations varying based on the tank's intended use and specifications. When using and maintaining the tank, it is necessary to...
Our company attaches great importance to technological innovation and R&D design. We have one municipal-level enterprise technology center in Heze City, equipped with testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc. We have 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, and more. The key products and technologies we have developed, such as temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat recovery, have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, Shandong Provincial key projects, and Heze City innovative and excellent projects. We have accumulated a total of 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technical team of our company, in collaboration with Professor Yajiang Li of Shandong University, has developed deep cryogenic container processing technology using the international plasma arc + wire filling argon arc welding (PAW-GTAW) technology. After the provincial-level scientific and technological achievement evaluation, the technical level has reached the international standard in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, let's create brilliance together!