In recent years, the continuous emergence of the 20 series and various new weapons and equipment can be attributed to our country's heavy machine tools. The world's largest CNC gantry boring and milling machine. This super machine tool, known as the "machine tool aircraft carrier", has a total height of 15 meters, a total width of 22 meters, a total length of 39 meters, and a total weight of 900 tons. It can machine steel members the size of a basketball court into any shape. The low-pressure inner cylinder and high-pressure outer cylinder of my country's million-kilowatt nuclear power plant are processed by it.
Zhongchuan Heavy Machine Tool Co., Ltd. independently developed the seven-axis six-link propeller processing machine tool with the largest processing diameter in the world, with a maximum processing diameter of 11 meters. As we all know, the quiet performance of a submarine is the core indicator of a submarine's combat effectiveness. The noise of Chinese naval submarines has long been widely criticized by the outside world. The US military even threatened that Chinese submarines would be discovered as soon as they leave port. The core component that restricts submarine noise is the propeller at the tail of the submarine. The commissioning of the seven-axis six-joint propeller processing machine tool will greatly contribute to the qualitative change in the noise performance of the Chinese Navy's submarines.
At the same time, the seven-axis six-link machine tool is currently the largest and most complex machine tool in the world. The successful development of this machine tool marks that Chinese machine tool companies have the ability to compete with the world's powerful machine tool companies in the international market. There is also the world's largest gear CNC processing equipment. The 16-meter-diameter ultra-large gear hobbing processing equipment manufactured by CITIC Heavy Industries is currently the world's largest processing diameter and the most technologically advanced gear CNC processing equipment. Excellent performance, maximum processing diameter 16 meters. Our country has mastered the manufacturing technology of heavy-duty marine crankshaft processing machine tools, getting rid of the previous situation of heavy reliance on imports of large-scale marine crankshafts. Our country has also become the third country in the world after Germany and Japan that can independently design and manufacture crankshaft processing equipment.
Not only that, China Second Heavy Machinery Group also successfully built the world's largest die forging hydraulic press. This 80,000-ton die forging hydraulic press has a height of 27 meters above ground and 15 meters underground, with a total height of 42 meters and a total equipment weight of 22,000 tons. One of the important contributors to the successful test flight of China's domestic large aircraft C919. The giant die forging hydraulic press is a national treasure-level strategic equipment symbolizing the strength of heavy industry. It is an important symbol to measure a country's industrial strength and military capabilities. Only a few countries in the world have been able to develop it. At present, the only countries in the world with die forging presses of more than 40,000 tons are China, the United States, Russia and France. At the same time, they broke the 51-year-old world record held by the former Soviet Union in one fell swoop.
Today, China has not only become the world's largest machine tool producer and consumer, but also the world's largest machine tool exporter. The localization rate of mid-to-high-end machine tools has reached more than 70%, and even five-axis linkage CNC machine tools have been successfully exported to Germany. This also indicates that we will no longer be restricted by other countries in the precision field. However, in the field of machine tools, there is still a large gap between my country and foreign countries. Some functional components are mostly dependent on foreign countries. This is mainly related to the late start of our related technologies, but even so, the gap is narrowing little by little.
