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Help CenterPrestressed Steel Bars for Building Construction: GR40, GR60, B500B, D500E (hot-rolled Steel Bars)
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Steel rebar (reinforcing bar) is one of the most important steel products in construction engineering, typically manufactured through hot rolling with a deformed surface (ribs or lugs) to enhance the tensile strength of concrete. Rebars have a circular cross-section and offer excellent bond performance and mechanical strength. Common foreign grades include: ASTM A615 (USA) Grade 40, Grade 60, Grade 75; BS 4449 (UK) B500B; DIN 488 (Germany) BSt 500 S; JIS G3112 (Japan) SD295A, SD345, SD390; and EN 10080 (Europe) B500A, B500B, B500C. To look up technical parameters and mechanical properties, use the search term “rebar specifications” for detailed information.
Main Applications
Rebar is widely used in various concrete structures, including foundations, beams, columns, and slabs of high-rise buildings, as well as bridges, tunnels, hydraulic structures, port terminals, and nuclear reactor containments. Different rebar grades suit different stress applications: Grade 40 is suitable for low-rise or non-critical structures, while high-strength Grade 60 and Grade 75 are used in high-rise buildings and long-span bridges. The European B500B grade, known for its high ductility and weldability, is suitable for seismic zones. For seismic design considerations, search “seismic rebar grade” to find appropriate rebar grades.
Surface Deformation and Processing Properties
Rebar surfaces typically feature two longitudinal ribs and uniformly spaced transverse ribs (crescent or high ribs) to enhance mechanical interlocking with concrete. Rebar can be classified by diameter into small-diameter rebar (6 mm–12 mm, often supplied in coils) and large-diameter rebar (12 mm–50 mm, supplied as straight bars). For construction needs, rebar is often bent, cut, welded, or connected using threaded mechanical splices. For guidance on processing different diameters, search using “rebar bending and cutting guide” for fabrication instructions.
International Trade and Selection Suggestions
In international sourcing, key factors to consider include yield strength, tensile strength, elongation, chemical composition, and weldability class. Grade equivalences exist across different standards — for example, ASTM A615 Grade 60 may correspond to B500B in BS 4449 or B500B in EN 10080. For technical comparison and substitution, use the search term “rebar equivalent grade” for standard conversion. To find globally certified suppliers or current market prices, use “rebar suppliers USA” for reliable resources.
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