Marine aluminum plate is one of the main products of most large marine grade aluminum sheet suppliers in China. With its light weight, excellent performance, corrosion resistance and other superior properties, marine grade aluminum plate is being increasingly used by ship manufacturers. With the strategic development of the marine economy, both global ocean and inland shipyards are experiencing stable growth in shipbuilding. For marine grade aluminum sheet manufacturers, the growth of marine grade aluminum plate is obvious, and it is a reflection of this development.

In 2015, China's shipbuilding volume reached 31.26 million deadweight tons, an increase of 7.1% compared to the previous year, with exported ships accounting for 95.7% of the total. China's shipbuilding data, including completed shipbuilding volume and new order volume, accounts for about 35% of the world market share. In the development of the shipbuilding industry, the concentration of the industry has further increased, and the market share of leading marine grade aluminum sheet suppliers has once again risen. As for marine grade aluminum plate, which is used as a shipbuilding material, the industry concentration is also very apparent.

Marine grade aluminum plate is generally made of aluminum alloy plates such as 5083, 5086, 5454 and 5383, especially for ship decks and ship bodies, mainly in the form of wide plates. Therefore, the production requirements for marine grade aluminum plate are stricter compared to other products. At the same time, as an aluminum plate product used for ships, it must also be certified by authoritative institutions. For example, in the domestic ship plate market, it must pass the material certification of CCS (China Classification Society), and in the US ship market, it requires certification from ABS, KR in Japan, and GR in Germany.

Marine grade aluminum sheet suppliers mainly uses the 5000 series aluminum alloy, and its products such as 5083 and 5086 aluminum plates have been certified by CCS, becoming the main supplier for many large shipbuilding enterprises in China. In addition, it obtained certification from the Norwegian Classification Society in 2015, bringing another opportunity for further development in the international ship plate market.