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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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Grade B (L245) : Characteristics, dimensions, chemical composition and application range

Grade B (L245) is a mild steel that meets API 5L standards and is commonly used in oil and gas pipeline systems. It occupies an important position in the industrial field for its reliable performance and wide applicability.

peculiarity

Grade B (L245) has good strength and toughness, with a minimum yield strength of 245 MPa and a tensile strength range of 415-655 MPa. This steel performs well at low temperatures, has excellent crack resistance and weldability, and can withstand the pressure and stress in pipeline transportation. In addition, it also has a certain corrosion resistance, suitable for use in a variety of environmental conditions, is a cost-effective choice in pipeline engineering.

dimension

The size range of Grade B (L245) varies depending on the form of manufacture. As a seamless steel pipe, its outer diameter is usually from 1/2 inch (13.7 mm) to 26 inches (660.4 mm), and the wall thickness is from 2.77 mm to 25.4 mm. Welded steel pipes are available with an outer diameter of up to 100 inches (2540 mm) and a wider range of wall thicknesses, customizable according to API 5L standards. These dimensions make it suitable for a variety of scenarios, from small pipelines to large oil and gas delivery systems.

Chemical composition

The chemical composition of Grade B (L245) strictly follows API 5L standards and mainly includes carbon (C) ≤0.26%, manganese (Mn) ≤1.20%, phosphorus (P) ≤0.030%, sulfur (S) ≤0.030% and silicon (Si) ≤0.45%. The low carbon content ensures good weldability, while the addition of manganese enhances strength and toughness. Trace phosphorus and sulfur controls increase the purity of the steel and reduce the risk of brittleness. Some specifications may add trace elements such as niobium (Nb) or vanadium (V) to optimize performance.

Scope of application

Grade B (L245) is widely used in the oil and gas industry and is particularly suitable for long-distance pipelines such as oil pipelines, gas pipelines and water systems. Its reliable mechanical properties make it the material of choice for onshore and offshore pipeline projects. In addition, it is also used in pipe systems in petrochemical plants and support components in building structures. Due to its cost-effectiveness and ease of processing, Grade B plays a key role in the construction of global energy infrastructure.