Marine hull structure with steel plates called. Because of the harsh working conditions of ships, boats sea shell subject to chemical corrosion, electrochemical corrosion and marine growth, microbial corrosion; hull to withstand greater shock waves and alternating load; ship shaped to complex processing methods and other reasons, so the hull structural steel demanding. First good toughness is the most critical requirement, in addition, requires a higher strength, q345qd steel, good corrosion resistance, weldability, formability and surface quality process. To maintain quality and ensure that there is sufficient toughness, how much the price of a ton of steel requires the chemical composition Mn / C in 2.5 above, No. 35 steel, carbon equivalent, there are strict requirements, ship inspection departments approved by steel production. Insiders pointed out that in recent years, China's domestic steel production and processing technology has made significant progress, many of the original can not be produced, imported products can now rely on the production and product quality gradually recognized by domestic and foreign users. However, since the steel market is booming in recent years, steel companies often only the pursuit of production, and less focus on innovation and development of product quality and production technology, steel, even if the market demand for products, the more imitation, rather than developing . Plus iron and steel enterprises in developed countries in technology and equipment transfer increasingly cautious of key equipment and technology is very confidential. In the current imported steel, there are still 50% of the share of domestic steel companies being difficult to produce, or due to insufficient production capacity. 25mn steel, exhibition of Commerce Bo, Bo exhibition plate by Hefei Trading Company. 25mn steel, exhibition of Commerce Bo, steel Hefei Show Bo Trading Company (www.hfzhanbo.com) (www.hfzhanbo.com) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Mr. Huang.