According to CCTV program, only a few countries in the world can produce deck steel that is really used for aircraft carrier construction because of its extremely high performance requirements. China Angang Group is one of the enterprises with this ability. Angang Group has a steel base completed and put into operation in 2008, and has the most advanced steel production and processing equipment in China. Known as the "king of rolling mills in the world", the five-meter-five ultra-wide rolling mill is also assembled here. The widest rolling mill in the world has the highest rolling capacity. The rolling force is up to 654.38 million tons, and the steel plate with a width of 5.5 meters can be rolled, and the rolling length can reach more than 40 meters. Zhao Gang, deputy director of the Military Products Research Institute of the Iron and Steel Research Institute of Angang Group and head of the first domestic aircraft carrier deck steel research and development in China, said that this base is the only aircraft carrier deck steel production base in China, and "the current level has reached the world leading level". In 20 13, the deck steel of the first domestic aircraft carrier in China was produced at this base.
According to CCTV, before the construction of the first domestic aircraft carrier, Angang Group began to develop aircraft carrier steel when China was repairing the predecessor of the Liaoning ship "Varyag". According to reports, spherical flat steel is the key material for building large ships.
10 years ago, no iron and steel enterprise in China had the experience and conditions to produce symmetrical spherical flat steel. It took a team of the Iron and Steel Research Institute of Angang Group a year and a half to develop a symmetrical spherical flat steel with a special shape for repairing the Varyag.
The 200-ton steel for aircraft carrier produced by Angang for the maintenance of "Liaoning Ship" was delivered in May 2009. September 20 12 and may 2009, "Liaoning ship" entered the ranks and became China's first aircraft carrier. In addition, the most advanced hot-rolled strip production line in China is also located in Angang Group, where the steel plates used in the superstructure of China's first domestic aircraft carrier were produced. According to CCTV program report, in August of 20 13, Angang Group completed the production of key steel grades such as deck steel and ball flat steel required for the construction of the first domestic aircraft carrier, which provided 70% of aircraft carrier special steel for the construction of domestic aircraft carriers. On April 20 17, China launched its first domestic aircraft carrier.
According to China's "Legal Evening News" reported in March 12, on March 8, Beijing time, Liu Zheng, deputy of China Municipal People's Congress, chairman of Dalian Shipbuilding Industry Group Co., Ltd. and on-site commander of domestic aircraft carrier project, said that the progress of China's first domestic aircraft carrier is progressing as planned, and "20 18 years will be more exciting". According to Liu Zheng, China's domestic aircraft carrier is an extremely complicated system engineering with a huge amount of work. More than 500 domestic units and institutions have been mobilized across industries, departments and regions, with 3,000 to 5,000 people working on aircraft carriers every day.
On the technical level of China's aircraft carrier construction, Liu Zheng said that China's shipbuilding industry is at the forefront in the world. The ability and level of building warships have also been continuously improved. Liu Zheng further said, "As for the aircraft carrier, it can be said that the first domestic aircraft carrier was completely localized, including steel and all the equipment inside, so we are fully capable of building an aircraft carrier." Liu Zheng said that China's ability and level of technology and process management in building aircraft carriers are not inferior to any other country in the world.