DNV GL grade D flat steel: refers to 12-300mm wide and 4-60mm thick steel with rectangular section and slightly pure edge. DNV GL grade D flat steel can be the source product steel, or can be used as the blank of welded pipe and the thin slab of laminated sheet. DNV GL grade D flat steel can be produced with fixed thickness, width and length according to the user's requirements, which can reduce the cutting for the user, save the process, reduce the consumption of labor and materials, and reduce the processing loss of raw materials, save time, labor and materials.
DNV GL grade D bulb flat: it is a kind of special section steel. It is mainly used in shipbuilding and bridge building fields, which is composed of flat web and spherical head. Among them, DNV GL grade D bulb flat is an auxiliary medium section steel for shipbuilding. In recent years, with the rapid development of shipbuilding industry, bulb flat is in great demand. It is mainly used as the stiffener of ship plate, which is equivalent to human's "rib".