TMT Rebar HRB400

Description

1. Product Overview
The TMT Rebar HRB400 is a high-strength thermo-mechanically treated steel reinforcing bar, engineered to meet GB/T 1499.2-2018 standards for concrete reinforcement in medium- to large-scale infrastructure and building projects. Its primary industrial use lies in providing tensile strength and structural integrity to reinforced concrete elements such as columns, beams, slabs, and foundations. The key value proposition is its optimized balance of yield strength (≥400 MPa), ductility, and weldability, which reduces steel tonnage required per structure while enhancing seismic resistance. Strategically, HRB400 is the market benchmark in over 40 countries, replacing lower-grade rebars to lower total construction costs and improve long-term asset durability.

2. Key Specifications & Technical Characteristics

• Material Composition: Low-carbon steel (C ≤ 0.25%), with Mn, Si, and controlled micro-alloys (Nb, V, or Ti as per client request); S ≤ 0.045%, P ≤ 0.045%

• Grade & Standard: HRB400 (Hot Rolled Ribbed Bar, Yield Strength ≥400 MPa), conforming to GB/T 1499.2-2018; third-party certifications (SGS/BV) available

• Physical Characteristics:

  • Diameters: 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 32mm, 40mm

  • Surface: Dual high ribs (transverse + longitudinal) for superior concrete bonding

  • Color: Natural mill scale (dark grey/blue-black), optional epoxy coating

  • Length: Standard 6m, 9m, 12m; custom lengths up to 18m

  • Density: 7.85 g/cm³

• Packaging Options:

  • Bundled with 4–6 steel ties (2–3 MT per bundle)

  • Export-wrapped with moisture-barrier plastic + galvanized straps

  • Color-coded tags per diameter/certificate

• Shelf Life: Indefinite when stored indoors or under cover; outdoor storage ≤6 months (rust prevention advised)

3. Core Industrial Applications

• Primary industries: Commercial building construction, bridge & viaduct engineering, hydroelectric dams, port terminals, high-rise residential towers, industrial warehouses, seismic retrofitting projects

• Specific operational use cases:

  • Grade beams & pile caps in soft soil conditions – HRB400’s elongation (≥16%) prevents brittle failure under settlement

  • Seismic zones (e.g., Pacific Ring, Mediterranean) – superior strain-hardening vs. Fe415/Fe500 variants

  • Precast concrete elements – consistent rib geometry ensures automatic cutting & bending line compatibility

• Why this product performs better than alternatives:

  • Compared to mild steel (Fe250): 60% higher yield strength → reduces rebar tonnage by ~35–40%

  • Compared to standard Fe415: HRB400’s controlled quenching process creates a tempered martensite rim (hard outer layer, soft core), improving bend-rebend capability and on-site weldability without preheating

  • Cost advantage: lower alloy cost vs. Fe500 while meeting 400MPa requirement for 90% of global building codes

4. Competitive Advantages

• Quality consistency: ISO 9001:2015 mill with in-line eddy current testing and random tensile/yield checks per ASTM A1034; coefficient of variation (CV) for yield strength <3% across batches

• Supply reliability: Dedicated 500,000 MT/year production line; 72-hour lead time for standard diameters; safety stock held in 3 regional hubs (SE Asia, GCC, East Africa)

• Logistics capability: Break-bulk, flat rack, or containerized loading; on-site loading supervision; real-time vessel tracking via digital control tower

• Price competitiveness: Direct mill pricing – no trader margin; volume-linked rebates (≥5,000 MT) and letter of credit (LC) terms available

• Sustainability: Manufactured using EAF + continuous casting with 92% recycled scrap; compliant with EU Carbon Border Adjustment Mechanism (CBAM) documentation

• Technical support: Free CAD rebar detailing drawings, welding procedure specifications (WPS), and third-party mill audit reports included for orders ≥500 MT

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20MT (mixed diameters allowed within same shipment)

• Loading capacity per container:

  • 20′ dry container: 20–22 MT (depending on diameter mix)

  • 40′ flat rack: 24–26 MT

  • Break-bulk / handysize vessel: up to 5,000 MT per shipment