Steel Billets

详情

Steel billets are semi-finished, long steel products typically square in cross-section (**0x**0mm to **0x**0mm commonly), produced via continuous casting, usually **2 meters long
. Key specs include carbon steel grades 3SP/5SP, ASTM A**5, or BS ***9, with chemical composition aiming for C 0.***0.*6% and Mn 0.***0.*0%. They are used for rolling into rebar and wire rods. 


    Length: Standard lengths are 6 to *2 meters, with 5.8m or *1.8m common for export container efficiency.
    Weight: 
    often **2 tons total per billet bundle.
    

Chemical Composition & Grades (Common)

    Grades: 3SP, 5SP, ST*7, ST*4, C*5.
    Carbon (C): 0.*0% 0.*0% (depending on grade, e.g., 3SP/5SP).
    Manganese (Mn): 0.*0% 1.*0%.
    Silicon (Si): 0.*5% 0.*5%.
    Phosphorus (P) & Sulfur (S): Generally
    .
    Carbon Equivalent (CE):
    . 

Physical Properties & Tolerances

    Rhomboidity: Maximum 5%.
    Side Tolerance:
    to
    .
    Cutting: Generally flame cut on both ends.
    Surface: Must be free from harmful defects like cracks, blowholes, or excessive porosity.
    Identification: Heat number/cast number is usually punched on the end. 

Industry Standards

    ASTM A**5: Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement.
    BS ***9: British Standard for Weldable Reinforcing Steel for the Reinforcement of Concrete.
    ISO *****2: International Standard for Steel for the Reinforcement of Concrete.