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High Strength Coiled Rebar from China Suppliers - Factory Direct for Enhanced Concrete Reinforcement

Coiled rebar, often referred to as coiled deformed bar, represents a vital high-strength steel material used in contemporary construction engineering in China. This product is crafted into a spiral shape, featuring uniformly distributed transverse and longitudinal ribs on its surface, which enhance its bond with concrete. As a result, coiled rebar significantly improves the integrity, seismic resistance, and crack resistance of reinforced concrete structures. Our factory produces coiled rebar in accordance with national standards such as GB/T 1499.2, primarily utilizing high-strength seismic grades like HRB400E and HRB500E. With specifications ranging from Φ6mm to Φ14mm, our products meet diverse reinforcement needs for various structural components, When compared to traditional straight bars, coiled rebar provides substantial advantages. Its coiled design minimizes end-loss, maximizing material utilization. At construction sites, it can be efficiently cut to required lengths using specialized straightening machines, which helps reduce waste. This feature is particularly beneficial for projects that demand large volumes of non-standard lengths, ultimately lowering material costs and expediting construction timelines. Moreover, coiled rebar is easier to transport and store, making it a space-saving solution for contractors, Our coiled rebar is widely utilized in numerous reinforced concrete applications, including buildings, bridges, roads, and utility tunnels, making it an excellent choice for reinforcing beams, slabs, columns, and walls. As one of the leading suppliers in China, we ensure that every coil delivers outstanding mechanical properties, precise dimensions, and superior surface quality, safeguarding the integrity of your construction projects

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    Manufacturing complies with GB/T 706-2016 hot-rolling standards, with post-galvanization physical properties significantly upgraded: Zinc coating hardness reaches 250HV (35% higher than substrate), bending stiffness increases by 15% (ASTM E8 three-point test), while maintaining yield strength ≥235MPa. Zero uncoated defects ensured by 100% eddy-current testing (ISO 1461 Class A), surface homogeneity tolerance ≤±10μm.

    Excels in renewable energy and infrastructure: Ideal for solar mounting systems (UL 2703 certified, annual zinc loss <0.8%), offshore platform legs (resists chloride erosion, EN ISO 9227 CX class), and chemical plant frameworks (pH3-11 chemical tolerance per ASTM G31). Outperforms painted steel in installability – eliminating post-weld anti-rust treatment – with cut/punched edges self-protected by cathodic action (ASTM A780 repair compounds).

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    Leads in sustainability and economy: Zinc recyclability >95% (ISO 14021 certified), reducing lifecycle costs by 40%. Over a 30-year span, saves $220/ton in maintenance versus painted steel. EU exports comply with REACH Annex XVII lead-free requirements (Pb<0.01%), while US projects meet ASTM A123 Type 8 zinc specifications.

    Customization services: Equal/unequal angle cutting (±0.5mm laser tolerance), pre-punching/slotting (DIN 1022 standard), backed by SGS material certificates, third-party inspections, and ISTA 3E transit test reports.

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    Product Details

    Model number

    Equal Angle: e.g., L50×50×5 (50mm width, 5mm thickness).

    Unequal Angle: e.g., L100×80×8 (100mm long side, 80mm short side, 8mm thickness).

    Dimensions

    Equal Angle: Width 20-250mm, thickness 3-24mm.

    Unequal Angle: Long side 25-200mm, short side 16-125mm, thickness 3-18mm.

    Applications

    Construction (e.g., bridges, factory frameworks).

    Machinery manufacturing (equipment supports, connectors).

    Power transmission towers, brackets.

    Decorative engineering (e.g., metal doors/windows).

    Standards

    China: GB/T 706-2016 (Hot-rolled steel standard).

    International: ASTM A36 (USA), JIS G3192 (Japan), EN 10056 (Europe).

    Technology

     Production: Hot-rolling (high-temperature), cold-forming (room-temperature).

    Mechanical properties: Tensile strength ≥375MPa, yield strength ≥235MPa (e.g., Q235).

    Surface Treatment

    Galvanizing (anti-corrosion, for outdoor use).

    Painting/Powder coating (decoration or rust prevention).

    Black (untreated, direct use).

    Industry applications

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    FAQ

    • Q: How to verify zinc coating thickness? Rust prevention during shipping?

      A: Magnetic induction gauge (ISO 2178) with 3-point random sampling. VCI anti-rust agent + desiccants applied pre-shipment. Port reinspection available

       

    • Q: Can we return goods if dimensions exceed ±1mm vs drawing?

      A: ASTM A6 tolerance applies: ±0.8mm width, ±0.3mm thickness. Free replacement for non-conformity with inspection report..

       

    • Q: Do you provide UL 2703 certification for solar projects?

      A: UL-certified galvanized angles available (+15% cost). Certificate includes zinc composition & UV resistance data (5000hrs aging test).

       

    • Q: Can we order 1 ton trial? Who pays LCL charges?

      A: Minimum 22 tons for FCL. LCL surcharge: $180/ton. Recommend 15-ton full 20GP container.

       

    • Q: Compensation if straps break causing deformation?

      A: Submit photos + third-party survey report. Replacement shipped within 72 hours with freight covered.

       

    • Q: Can you drill holes per our drawings and remove zinc dross?

      A: Laser cutting/punching (±0.5mm tolerance) with automatic zinc-rich coating at cut edges (ASTM A780 compliant).

       

    • Q: Does it meet EU REACH lead content <0.1%?

      A: Zinc coating Pb <0.01% (SGS test-MSDS Section 15). CoC (Conformity Certificate) included.

    packaging

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