01. Product Overview

Our Coiled Deformed Reinforcing Bar, commonly known as coiled rebar, rebar in coil or deformed wire rod for reinforcement, is hot-rolled ribbed reinforcing steel supplied in a continuous coil rather than fixed straight lengths. The ribs are designed to provide mechanical interlock with concrete, while the coiled delivery format supports automated straightening, cutting, bending, stirrup production and reinforcement fabrication.

For Chinese projects, common requirements include GB/T 1499.2-2018 and grades such as HRB400, HRB400E, HRB500 and HRB500E, subject to the order and mill capability. For international projects, the buyer may specify ASTM A615/A615M or ASTM A706/A706M where coiled products are accepted, ISO 6935-2, EN 10080 or another local standard. ASTM A615 specifically covers deformed and plain carbon-steel bars in cut lengths and coils; weldability should not be assumed unless the selected specification and chemistry support the intended welding procedure.

The product is intended for reinforced-concrete construction and downstream rebar processing. It can be supplied with controlled coil weight, coil ID/OD, rib pattern, surface condition, tags and test documents according to the confirmed purchase specification. Because coil dimensions and process limits vary by mill, the final diameter, weight, mechanical properties, chemistry, packaging and delivery condition must be confirmed before quotation.

Product boundary: Coiled deformed rebar is not the same as ordinary smooth wire rod. The rib geometry, reinforcement standard and intended concrete use must be stated clearly in the purchase order.

02. Key Features & Advantages (FAB Model)

● Ribbed Surface for Concrete Bond

Ø Feature:

Hot-rolled transverse and/or longitudinal ribs create a deformed bar profile for mechanical interlock with concrete.

Ø Advantage:

The rib geometry provides a defined interface between steel and concrete when the bar is correctly embedded and detailed.

Ø Benefit:

Engineers can use the specified ribbed reinforcement to support bond, anchorage and load-transfer design in reinforced-concrete members.

● Continuous Coil for Automated Processing

Ø Feature:

The reinforcement is supplied as a continuous coil for use with straightening, cutting, bending and stirrup-processing equipment.

Ø Advantage:

Continuous feed can reduce the number of short-length joints and support repeatable machine production of reinforcement components.

Ø Benefit:

Fabricators may improve material flow and reduce manual handling when their equipment is designed for coiled rebar.

● Grade Options for General and Seismic Design

Ø Feature:

Common grade families include HRB400/HRB400E and HRB500/HRB500E under Chinese requirements, with international equivalents specified by the project code.

Ø Advantage:

The buyer can select strength and ductility requirements according to structural design, seismic category and local acceptance rules.

Ø Benefit:

Correct grade selection avoids using a general grade where enhanced ductility or seismic performance is required.

● Traceable Heat and Mechanical Testing

Ø Feature:

Each production batch can be linked to heat information, coil tags and agreed material tests.

Ø Advantage:

Chemical composition, yield strength, tensile strength, elongation, bend performance and dimensional checks can be reviewed against the purchase standard.

Ø Benefit:

Traceable documentation helps contractors, fabricators and project inspectors verify the reinforcement before processing or placement.

03. Technical Specifications

04. Industrial Applications

Ø Automated Rebar Straightening and Cutting

Coiled rebar is suitable for downstream lines that decoil, straighten and cut reinforcement to programmed lengths. It can support repeatable production of straight bars when the coil quality, diameter, rib geometry and machine capacity are matched.

Ø Stirrups and Rebar Bending Components

Continuous coiled feed is commonly considered for stirrups, hooks, links and bent reinforcement components. The bar grade and ductility must be compatible with the bending radius, equipment settings and project design.

Ø Reinforced Concrete Buildings and Infrastructure

Specified coiled deformed rebar can be processed into reinforcement for buildings, foundations, bridges, roads, tunnels, precast components and other concrete structures. The final reinforcement arrangement is governed by the structural drawings and local code.

Ø Welded Mesh and Reinforcement Fabrication

Suitable coiled deformed wire or rebar can be processed into welded reinforcement mesh when the steel grade, diameter, weldability and mesh standard are compatible. Welded mesh production must be approved against the applicable standard rather than assumed from the coil name alone.

05. Why Choose Us?

Ø Grade and Code Matching:

We review the project code, grade, nominal diameter, seismic requirement and intended processing before quotation.

Ø Coil-Handling Coordination:

Coil weight, ID, OD, lifting points and decoiler compatibility are discussed so the delivered coil fits the buyer's processing line.

Ø Heat Traceability:

Coil tags and material certificates can be linked to heat and batch information according to the agreed inspection plan.

Ø Processing Application Support:

We distinguish coiled rebar from smooth wire rod and check whether the material is intended for straightening, bending, mesh welding or direct concrete reinforcement.

Ø Export Packing and Documents:

Packing, markings, MTC, inspection reports, commercial documents and origin documents are coordinated with the shipment requirements.

06. Packaging & Logistics

Ø Coil Stability:

Coils are secured with steel straps and protected against collapse, unwinding and impact during lifting and container loading.

Ø Moisture Protection:

Waterproof covering and rust-prevention measures can be discussed for sea transit or humid storage conditions.

Ø Identification:

Grade, diameter, heat number, coil number, weight and standard can be marked on tags according to the packing list.

Ø Handling:

Coil weight and lifting method must match the buyer's crane, forklift, hook and decoiler capacity.

Ø Documents:

MTC, test report, packing list, commercial invoice, certificate of origin and other agreed documents can be prepared subject to the order and availability.

Ø Commercial Terms:

EXW, FCA, FOB, CFR and CIF can be discussed after standard, grade, diameter, quantity and destination are confirmed.

07. Research Basis and Verification Note

The product boundary and standard references are aligned with ASTM A615/A615M, whose scope covers deformed and plain carbon-steel bars in cut lengths and coils; GB/T 1499.2-2018 for hot-rolled ribbed reinforcing steel in China; ISO 6935-2 for ribbed bars; and EN 10080 general requirements for weldable reinforcing steel. ASTM's published scope also cautions that welding requires a suitable procedure based on chemistry and intended service. Final grade, diameter, coil dimensions, mechanical properties and weldability must be confirmed against the project code and actual mill certificate.

08. FAQ

Q1: What is coiled deformed reinforcing bar?

It is hot-rolled ribbed reinforcing steel delivered in a continuous coil rather than fixed straight lengths. The ribs provide mechanical interlock with concrete, while the coil format supports downstream straightening, cutting, bending and reinforcement fabrication.

Q2: What standards are commonly used for coiled rebar?

Common references include GB/T 1499.2-2018, ASTM A615/A615M, ASTM A706/A706M where accepted, ISO 6935-2 and EN 10080 or other local codes. The buyer must confirm whether the selected standard accepts the required coil form and project application.

Q3: What is the difference between HRB400 and HRB400E?

The letter E is generally used in Chinese grade designations to identify enhanced seismic performance requirements, including ductility-related requirements specified by the applicable standard. HRB400E should be ordered only where the project code requires it; grade equivalence must be checked against the complete standard, not the name alone.

Q4: Can coiled rebar be used to make stirrups?

Yes, suitable coiled rebar can be used for stirrups and bent components when its diameter, ductility, rib geometry and grade match the bending machine and project requirements. The bending radius and machine settings should be qualified before mass production.

Q5: Can coiled rebar be used for welded reinforcement mesh?

It may be used when the steel is suitable for welding and complies with the mesh standard, chemical limits, diameter and weld-performance requirements. ASTM A615 alone should not be treated as a guarantee of weldability; the welding procedure and material chemistry must be reviewed.

Q6: What diameters are commonly available in coiled rebar?

Many commercial offers focus on smaller diameters, often around 6-16 mm, but the actual range depends on the mill, grade, rib design, coil weight and downstream equipment. Confirm the required diameter before quotation.

Q7: Is coiled rebar the same as hot-rolled wire rod?

No. Ordinary wire rod may be smooth and intended for drawing, nails or other downstream products, while coiled deformed rebar has a ribbed reinforcement profile and is specified for concrete reinforcement. The grade, surface geometry and applicable standard must be checked.

Q8: What tests are normally required for coiled rebar?

Depending on the standard, tests may include heat chemical analysis, tensile properties, elongation or uniform elongation, bend performance, dimensional and rib checks, mass/weight verification and visual inspection. The required test plan should be written into the purchase order.

Q9: How should coiled rebar be stored?

Store coils on stable supports, keep them away from standing water and corrosive contamination, and protect tags from damage. Avoid dropping or dragging coils. Before processing or concrete placement, inspect the coil for deformation, excessive loose scale, oil or other contamination that could affect handling or bond.

Q10: What information is needed for a coiled rebar quotation?

Please provide the standard, grade, seismic requirement, nominal diameter, estimated coil weight, coil ID/OD if controlled, quantity, downstream process, weldability requirement, destination port and required certificates. A project specification or processing-machine requirement is helpful.