Reinforcing steel bars
Rebar and wire rod are both types of steel used in construction, but they differ significantly in shape, properties, and applications. Rebar (also known as Deformed Steel Bar) typically refers to ribbed reinforcing bars with larger diameters (usually ≥10mm). It’s primarily used as the backbone of concrete structures, enhancing their tensile strength. On the other hand, wire rod is usually a smooth, round bar with smaller diameters (typically ranging from 5.5mm to 22mm). It serves as a raw material, undergoing further processing to produce a wide variety of products, such as steel wires, steel cables, screws, and more. To put it simply: Rebar is like the "skeleton" of construction, while wire rod acts as the "nerves and blood vessels" of industry.
Product Categories:
Rebar, wire rods
Keywords:
Detailed introduction
Product Definition
Threaded steel bars are reinforcing bars with ribbed surfaces; their longitudinal and transverse ribs (such as crescent or herringbone ribs) enhance the bond with concrete, preventing slippage.
Classification method
By strength grade (core classification): Classified into multiple levels based on yield strength—this is the most critical factor when selecting threaded steel.
HRB400E: Currently the clear market leader in China. Its yield strength standard value is 400 MPa. The "E" denotes earthquake-resistant reinforcement, offering superior ductility.
HRB500E: High-strength reinforcing bar with a yield strength of 500 MPa. Ideal for use in high-rise, ultra-high-rise buildings and long-span bridges, it helps reduce steel consumption and aligns with the national strategy for widespread adoption.
HRB600: Higher-strength reinforcement bars, currently used less frequently but representing the future trend.
By geometric shape:
Moon-shaped ribs: The most common rib type, offering excellent anchoring performance with concrete.
Herringbone ribs/spiral ribs: Other, less common rib shapes.
By chemical composition:
Plain hot-rolled steel bars: The primary alloying element is manganese (Mn).
Fine-grained hot-rolled steel bars: Produced via controlled rolling and cooling processes, resulting in finer grains and higher strength.
Key Features
High Strength: Provides the tensile and shear strength required for concrete structures.
Good bond strength: The transverse ribs on the surface interlock tightly with the concrete, allowing them to share the load together.
Excellent ductility and toughness: Particularly in "E" seismic reinforcement bars, they can absorb earthquake energy, preventing sudden structural failure.
Weldability: Suitable for welding operations.
Main uses
Building construction: Tension bars and stirrups for all reinforced concrete structural elements, including beams, slabs, columns, walls, and foundations.
Infrastructure development: roads, railways, bridges, tunnels, dams, airports, ports, and more.
Others: Prefabricated components, etc.
Visual identification
Each reinforcing bar has a grade mark rolled onto its surface for identification purposes:
Manufacturer/Trademark Abbreviation
Specifications and Model (mm)
Strength Grade: (4 represents HRB400, 5 represents HRB500)
Example: Rebar marked "4E SG 20" indicates: HRB400E-grade seismic-resistant rebar with a diameter of 20mm, manufactured by "SG."
Product Applications
Home appliance industry
Kitchen Equipment Industry
Amusement Ride Industry
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Automotive industry
Construction industry
Construction Materials Industry
Amusement Ride Industry
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Mechanical Manufacturing Industry
Railway Systems Industry
Pipeline Systems Industry
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