The demand for DNV GL AH32 bulb flat steel

DNV GL AH32 bulb flat steel is mainly used in shipbuilding and bridge building. With the rapid development of shipbuilding industry in recent years, the demand of ship bulb flat steel is more and more strong. Bulb flat steel has gradually become the special name of ship bulb flat steel. In view of the close relationship between bulb flat steel and shipbuilding industry and the serious lack of its own supply and demand objective situation, the insiders mostly use the proportion of bulb flat steel consumption to the ship plate consumption to predict the bulb flat steel demand.

At the same time, different classification societies, national ship design departments and manufacturing departments have different design and use of DNV GL AH32 bulb flat steel, so the proportion of bulb flat steel to ship plate expected by the insiders is a large span range. According to the incomplete market survey in 2007, the demand for bulb flat steel accounts for about 7% - 12% of the total demand for ship plates. Shipbuilding medium-sized sections include angle steel, bulb flat steel, L-shaped steel, etc. the demand accounts for about 12% - 20% of the total shipbuilding materials, of which bulb flat steel accounts for about half. According to the prediction of 12 million tons of domestic ship plates in 2008, the demand for bulb flat steel is about 85-145 million tons.

The material of the bulb flat steel is corresponding to the ship plate. For example, DNV GL AH32 bulb flat steel and DNV GL AH32 ship plate. At present, the bulb flat steel grades mainly include class A, class B, AH32, AH36, DH32, DH36, etc.. The bulb flat steel certified by different classification societies shall be used for different ship plates certified by different classification societies. In terms of the demand for different materials, the demand for Grade A and B flat steel accounts for about 60%, AH32 and AH36 about 30%, and D32 and D36 about 10%.