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Henan BEBON international co.,ltd located in zhengzhou ,henan province of china. Since it was established in 2008, Henan BEBON has earned an outstanding reputation for its professional exporting shipbuilding steel.About the products,we mainly specialized in steel products for shipbuilding which have been approved by some authoritative classification societies,likeLR,BV,ABS,DNV,GL and so on . Besides, we have three big warehouses--Zhengzhou,Tianjin and shanghai.
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What's bulb flat steel?

　　Bulb flat steel common grades: Grade A, B, AH36, Grade AH32, DH36, EH36, Q235B, Q345D

　　Profile steel shapes: angle steel, bulb flats, L-shaped steel angle, H beams, channel steel.

　　Bulb flat steel is a medium section mainly used in the field of shipbuilding and bridge building. Among them, spheroidal flat steel is the auxiliary medium section for shipbuilding. In recent years, with the rapid development of the shipbuilding industry, the demand for marine flat steel has been strong. Generally, the design of the main hull of larger ships and regular ships uses marine ball flat steel, and ball flat steel with the same thickness and material as the connected plates is used as the skeleton (also called tendons or keels).

　　Bulb Flat Steel Material

　　The material of the ball flat steel corresponds to the ship plate, which is divided into general strength (A, B, D, etc.) and high strength (AH32, AH36, DH32, and DH36, etc.). Different ship classifications require the use of ship plates. Ball flat steel certified by different classification societies. Hot rolled special flat steel, 8 # ～ 30 # marine flat steel, marine ball flat steel.

　　Bulb Flat Steel Standard

　　At present, domestic ball flat steel production mainly implements the GB/T 9945-2012 "hot-rolled ball flat steel" standard, and a few companies are implementing the European standard EN10067: 1996 "hot-rolled ball flat steel size, shape, weight and allowable deviation" standard, similar Other standards include JIS G3192, ISO 657-19.

　　Bulb flat steel weight table: national standard marine spherical flat steel theoretical weight and allowable deviation of dimensions (GB/T 9945-2001)

　　Bulb Flat Steel Market

　　Ball flat steel is a type of special steel, which is composed of a flat web and a spherical ball head, and is an asymmetrical steel. Ball flat steel is mainly used in shipbuilding and bridge building. However, with the rapid development of the shipbuilding industry in recent years, ball flat steel has gradually become a special name for marine ball flat steel. It is an important type of ship steel and is mainly used to strengthen ship plates. The use of tendons is equivalent to human "ribs". The ship shape design of China's shipbuilding industry tends to use ball flat steel, while Japan and South Korea tend to use marine angle steel (equal-angle angle, unequal-angle angle, and unequal-angle thickness steel).

　　Bulb Flat Steel Specification

　　The specifications of ball flat steel are generally divided according to the nominal width, the small size is 8 # (that is, the nominal width is 80mm), and the large size is 43 # (the large nominal width is 430mm). Each specification has 2 to 5 different thicknesses.