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Bulb Flat Bar is a kind of special steel used in shipbuilding and bridge construction, and it occupies a very important position in Marine steel.We are a high-quality steel supplier in China with reliable product quality and considerate service. We can supply various specifications of marine flat steel, marine angle steel, marine steel plates, etc.
Bulb flat bar for shipbuilding, also known as flat ingot steel, is a long, spherical or hemispherical metal material with a flattened end. Bulb flat bar for shipbuilding is typically made of carbon steel or steel alloys and features high strength and corrosion resistance. Depending on the processing method, bulb flat bar can be categorized into cold-drawn bulb flat bar, hot-rolled bulb flat bar, and forged bulb flat bar types.
Hot rolled bulb flat bar is a special type of steel, consisting of a flat web and a spherical head, resulting in an asymmetrical shape. It is widely used in shipbuilding and bridge construction. The domestic standard for hot rolled bulb flat bar is GB/T9945-2001, “Hot Rolled Bulb Flat Bar,” which is consistent with the European standard EN10067:1996, “Hot Rolled Bulb Flat Bar,” differing only in tolerances and material specifications.
Steel Bulb Flats are a special type of profile steel, consisting of a flat web and a spherical head. Steel Bulb Flats are asymmetrical and primarily used in shipbuilding and bridge construction. With the rapid development of the shipbuilding industry in recent years, Bulb Flat Bar have become a specific designation for marine bulb flats, making them the most important type of marine steel. They are primarily used as reinforcements in ship plates. Domestic bulb flat production primarily adheres to the GB/T9945-2012 “Hot-rolled bulb flats,” with a few companies also using the European standard EN10067:1996 “Hot-rolled bulb flats: Dimensions, Shapes, Weights and Permissible Deviations.” Other similar standards include JIS G3192 and ISO 657-19.