Galvanized Plain Round Bar (High Corrosion Resistance)
Hot-Dip Zinc
Smooth Finish
Q235 / SAE1020
Direct Inventory
Primary Steel Bars & Structural Rods Catalog
Continuous supply of mill-tested carbon steel round rods, high-tensile deformed rebar, and custom-drawn wire products.
Deformed Steel Rebar 6mm–12mm for Structural Concrete
HRB400 / HRB500
High Yield
Bundled
SAE1080 / Q235 Hot Rolled High Carbon Wire Rod
Coil Pack
Spring & Wire
High Carbon
SAE1006 / SAE1008 Low-Carbon Cold Drawn Wire
Low Carbon
High Ductility
Bright Drawn
Large Diameter Structural Solid Round Steel Bars
Dia 20-300mm
Forged / HR
Q355B / 42CrMo
Hot Rolled Q235B Solid Carbon Steel Flat Bar
Uniform Edges
Black Surface
Structural Grade
Q235 / Q355 Hot-Dip Galvanized Flat Steel Bar
3-60mm Thk
ASTM A123
Earthing Systems
Hot Rolled Solid Square Bar for Industrial Machinery
Solid Core
Sharp Radii
Tool Steel
Market Intelligence & E-E-A-T Insights
The Global Commercial & Industrial Status of Round Steel Rods
An exhaustive analysis of supply line shifts, electric arc furnace (EAF) transformation, and structural consumption across emerging economies.
Supply Chain Re-Engineering & Decarbonization
Global demand for carbon and alloy round steel rods has transitioned toward lower-embodied-carbon processes. Modern mills leverage hydrogen-enriched blast furnaces and digital ladle refining furnaces (LF/VD). This guarantees low residual oxygen, ultra-low sulfur content (≤0.005%), and homogeneous inclusions necessary for high-speed CNC turning and heavy dynamic loads.
Manufacturing Precision & Automated Machining
With high-speed automation in global machine shops, requirements for round steel rods have advanced beyond standard dimensional tolerances. Tight roundness criteria (h9 to h11 tolerance bands), controlled core hardenability (Jominy end-quench data), and defect-free eddy-current tested surfaces are now baseline expectations for global aerospace and automotive buyers.
Geographic Trade Arbitrage & Mill Clustering
The concentration of integrated upstream blast furnaces and downstream cold-drawing/galvanizing mills in the Bohai Rim (Tianjin and Tangshan) delivers unbeatable freight density and tariff-resilient pricing models. Sourcing directly from these clusters eliminates intermediate distribution markups by 8% to 15% globally.
1996
Established in Daqiuzhuang, Tianjin
1,500+
Acres across Tianjin & Tangshan bases
10M+
Tons annual steel capacity
50+
Destination countries served
Industrial Deployment
Localized Application Scenarios & Macro Industry Solutions
From megastructure pile caps to offshore energy infrastructure, our round steel rods are tailored to precise chemical, thermal, and mechanical environments.
Heavy Infrastructure & Civil Construction
Utilized as foundational tie rods, high-yield anchor bolts, and post-tensioning bridge tendons. When supplied in grades like Q355B or ASTM A572 Gr.50, our solid round rods resist ground settlement stresses, dynamic shear vibrations, and seismic shifts across major urban infrastructure assets.
Precision Automotive & Drivetrain Engineering
Supplied as peeled, turned, and polished bar stock in low-to-medium carbon alloys (SAE1045, 40Cr). These rods undergo induction hardening to achieve a wear-resistant surface (HRC 55-60) while retaining core toughness for drive shafts, transmission pins, steering linkages, and suspension components.
Offshore Energy & Coastal Marine Facilities
Exposed to severe marine salt-spray and tidal splash zones, our hot-dip galvanized round steel rods deliver superior sacrificial zinc protection conforming to ASTM A123 or ISO 1461. This prevents pitting fatigue and stress corrosion cracking in offshore drilling platforms and coastal dock works.
Mining, Quarrying & Heavy Excavation Equipment
For drill string collars, wear pins, and conveyor rollers subjected to severe abrasion, our specialized quenched and tempered alloy rods (42CrMo4, AISI 4140) deliver balanced fracture toughness, high impact resistance at sub-zero temperatures, and long duty cycles.
Renewable Energy & Solar Tracking Systems
Utility-scale photovoltaic farms require millions of precision torque tubes and solid tracker pivot pins. We supply customized cold-drawn round bars with tight circularity and anti-corrosion finishes capable of resisting desert wind loads and thermal expansion cycles over 25+ years.
Turnkey EPC Project Material Bundling
Procuring raw materials for large EPC contracts often creates logistical bottlenecks. HZXY provides unified packaging, bundling round steel bars with structural H-beams, channel steels, seamless pipes, and industrial valves within single consolidated sea containers to reduce demurrage and freight costs.
Technical Roadmap
International Specification & Grade Cross-Reference
Harmonized international metallurgy reference for project managers, structural engineers, and import specialists.
| China (GB) | USA (ASTM / AISI) | Europe (EN) | Japan (JIS) | Min. Yield Strength | Key Application Matrix |
|---|---|---|---|---|---|
| Q235B | ASTM A36 | S235JR (1.0038) | SS400 | ≥ 235 MPa | General construction, framing, light machine shafts, cold bending |
| Q355B | ASTM A572 Gr. 50 | S355JR (1.0045) | SM490A | ≥ 355 MPa | Heavy civil structures, transmission towers, bridges, crane tie rods |
| 45# Carbon | AISI 1045 | C45E (1.1191) | S45C | ≥ 355 MPa | Quenched & tempered components, pins, axles, crankshafts, hydraulic rods |
| 40Cr Alloy | AISI 5140 | 41Cr4 (1.7035) | SCr440 | ≥ 550 MPa | High-stress gears, transmission shafts, connecting rods, machine tools |
| 42CrMo | AISI 4140 | 42CrMo4 (1.7225) | SCM440 | ≥ 930 MPa | Heavy-duty forgings, oilfield drill collars, pressure vessels, turbine bolts |
| SAE1008 | ASTM A510M 1008 | DC01 (approx) | SWRM8 | Low Carbon | Cold drawing, nail wire, binding rod, mesh manufacturing |
*Values reflect standard room-temperature baseline testing. Mill Test Certificates (MTC 3.1) provided with each delivery lot.
Proven Track Record
State-of-the-Art Processing & Global Project References
Operating from our 1,500-acre manufacturing bases in Tianjin and Tangshan, delivering fabricated materials to landmark projects worldwide.
Jiaozhou Bay Bridge — Structural Marine Steel
Beijing Daxing Int'l Airport — Roof Truss & Tie Rods
National Stadium (Bird's Nest) — Complex Welded Sections
Water Cube — Precision Space-Frame Structural Bars
Frequently Asked Questions
Buyer's Procurement & Engineering Q&A
Clear answers to commercial terms, tolerances, metallurgy testing, and logistics coordination.
What are the standard diameter ranges and dimensional tolerances for your round steel rods?
We supply hot-rolled round rods in standard diameters from 6 mm to 300 mm. For precision machining applications, cold-drawn or peeled round bars can be produced to h9, h10, or h11 diameter tolerances per ISO 286-2. Straightness is maintained at ≤ 1.5 mm/m for precision lines and ≤ 2.5 mm/m for general structural lots.
How do you verify metallurgical purity and mechanical strength prior to loading?
Every heat is tested using optical emission spectrometers for strict ladle and product analysis. Mechanical tension, yield, elongation, and Charpy V-notch impact tests (at 0°C or -20°C upon request) are recorded. Comprehensive EN 10204 Type 3.1 Mill Test Certificates accompany all shipments, and buyers may appoint third-party auditors like SGS, BV, or Intertek.
What deep-processing operations can be completed before containerization?
Our Tianjin and Tangshan service centers handle cut-to-length sawing, surface chamfering, center-hole drilling, threaded ends, CNC lathe turning, custom bending, and hot-dip galvanizing per ASTM A123. This delivers installation-ready steel direkt to site and avoids excessive port processing costs.
Can round steel rods be mixed with other structural steels in one shipment?
Yes. As an integrated producer of H-beams, channel steels, flat bars, steel pipes, and PVC conduits, we routinely consolidate mixed material lists into unified 20GP or 40HQ container shipments. This eliminates the burden of managing multiple mill vendors and reduces overall freight expenditures.
Where is HZXY located, and what are the standard lead times for export orders?
HZXY is headquartered in the Daqiuzhuang Industrial Zone, Jinghai District, Tianjin, with our second heavy production base in Tangshan. Standard sizes maintained in our 1,500-acre yard can be loaded within 5 to 7 days via Tianjin Port. Custom-milled or deep-processed specifications generally require a 15 to 25-day production cycle.
What anti-corrosion export packaging options are available for sea transport?
Standard export packaging includes heavy steel strapping with waterproof synthetic plastic wrapping, rust-preventative oil coating, and protected metal end tags. For precision ground or polished rods, heavy wooden cases or individual corrugated sleeve protection can be arranged to eliminate handling scuffs and sea-humidity oxidation.
Full Project Package
Coordinated Structural Steel Profiles & Tubing
Complete your bill of materials with certified structural profiles, coils, and industrial pipelines directly from our factory floor.
A36 / Q235 Grade Hot Rolled H-Beam
Wide Flange
ASTM A36
Load Bearing
Galvanized Structural Carbon Steel Angle Bar
Equal / Unequal
Galvanized
Tower Bracing
Hot Rolled Galvanized Channel Steel
U / C Shape
High Rigidity
Facade Frame
Q235B / Q355B Hot & Cold Rolled Carbon Steel Coil
HR & CR
Slitting Options
Deep Drawing
Double-Coated Prepainted Galvanized Coil (PPGI)
RAL Standard
PVDF / PE
Corrosion Proof
Galvanized Scaffolding Steel Pipe
ERW High Yield
Uniform Zinc
Safety Certified
Industrial Heavy Coated Anti-Corrosion Steel Pipe
3PE / FBE
API Spec
Oil & Gas Ready
Industrial Heavy Duty Gate & Butterfly Pipeline Valves
Cast / Forged
High Pressure
MEP Systems
Acquire Mill-Direct Quotation & Customized Engineering Feasibility
Partner with an established manufacturer offering 30 years of metallurgy excellence, 10,000,000+ tons annual output, and transparent international export terms.