Explore production-grade hot rolled solid rounds, reinforcement bars, and long structural sections ready for immediate export staging from our 1,500-acre logistics yards.
Hot-dip zinc coating with high tensile yield for severe outdoor, marine, and sub-soil earthing arrays. Diameters ranging 10mm–120mm.
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High-bonding ribbed reinforcement steel for bridge substructures, high-rise shear walls, and commercial structural foundations.
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Uniform chemical distribution ideal for high-tensile wire drawing, spring fabrication, pre-stressed steel strand, and mesh fabrication.
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Engineered wide-flange profiles delivering maximum section modulus for skyscraper columns, portal frames, and overhead gantry bridges.
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Clean orthogonal square billets for heavy machine tooling, shafts, perimeter protective grating, and forged machinery components.
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Thicknesses 3mm–60mm tailored for perimeter welding, grounding arrays, industrial base plates, and pre-punched mounting struts.
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Hot-dip zinc structural channels engineered for curtain-wall sub-brackets, equipment bases, solar trackers, and purlin frameworks.
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Pre-punched CNC slots for rapid modular assembly in electrical transmission pylons, warehouse racks, and architectural bracing systems.
Consult Engineering RepA technical guide analyzing market supply shifts, billet casting standards, and commercial pricing models across global EPC, machinery forging, and structural engineering environments.
The global hot rolled round bar landscape is shifting toward secondary metallurgy refinement. Utilizing LF (Ladle Furnace) refining and VD (Vacuum Degassing), leading Chinese producers eliminate trace hydrogen and sulfide inclusions, ensuring bar core integrity for demanding CNC turning and cold-heading.
Hot rolled round bar spot benchmarks fluctuate based on iron ore pellets, metallurgical coke, and billet scrap spreads. Direct-from-cluster pricing at Daqiuzhuang eliminates intermediate distribution margins, offering buyers transparent mill-gate net-back quotations indexed against Shanghai Futures Exchange (SHFE) base prices.
Rolling lines equipped with multi-stand continuous horizontal/vertical reduction stands produce fine, equiaxed austenitic grain sizing (ASTM Grade 5 to 8). This ensures homogeneous cross-sectional hardness, minimal center segregation, and exceptional isotropic yield across broad service temperature profiles.
When executing international tenders, material equivalency mismatches between ASTM, GB, EN, and JIS standards represent significant compliance risk. Below is our verified structural equivalency map certified under GB/T 1591-2018 and ASTM A6/A6M protocols.
| Steel Grade (China GB) | US Equivalent (ASTM/AISI) | European Norm (EN) | Japanese Standard (JIS) | Min. Yield Strength (ReH) | Tensile Strength (Rm) | Recommended Industrial Scope |
|---|---|---|---|---|---|---|
| Q235B | ASTM A36 / 1020 | EN 10025-2 S235JR | JIS G3101 SS400 | ≥ 235 MPa | 370–500 MPa | Structural anchors, base tie-rods, low-stress fabrication fasteners |
| Q355B (ex Q345B) | ASTM A572 Grade 50 | EN 10025-2 S355JR | JIS G3106 SM490A | ≥ 355 MPa | 470–630 MPa | High-stress machinery axles, hydraulic cylinders, crane rail pins |
| 45# Carbon | AISI / SAE 1045 | EN 10083-2 C45E | JIS G4051 S45C | ≥ 355 MPa (Quenched) | ≥ 600 MPa | Transmission shafts, forged crankshafts, gears, guide columns |
| 40Cr Alloy | AISI / SAE 5140 | EN 10083-3 41Cr4 | JIS G4053 SCr440 | ≥ 785 MPa (Q+T) | ≥ 980 MPa | High-torsion drive pins, mining shafts, automotive spindles |
| SAE 1008 / 1006 | ASTM A510M 1008 | EN 10016-2 C9D | JIS G3505 SWRM8 | ≥ 195 MPa | 310–410 MPa | Cold drawing wire, nail manufacturing, concrete tie re-processing |
*Data calibrated for hot rolled nominal diameters between 16mm and 100mm. Per GB/T 1591-2018 guidelines, minimum yield parameters step down slightly for diameters exceeding 100mm. Complete 3.1 Mill Test Certificates accompany each exported container lot.
Our hot rolled round bar, long sections, and integrated steel pipeline packages are qualified on critical megaprojects worldwide.
Round bar tie-rods, deep-foundation foundation dowels, and anchor bolts supplied to the Jiaozhou Bay Bridge. Engineered with uniform zinc passivation to withstand marine chloride splash zones without pitting.
Structural pins, space-frame nodes, and prestressed tie rods engineered for landmark builds including Beijing Daxing Airport and the Bird's Nest National Stadium.
Clean medium-carbon round bars (AISI 1045, 40Cr) optimized for forgeability and precision peeling. Deployed across transmission drives, planetary pins, track link pins, and hydraulic cylinder rods.
Forged grinding balls, downhole sucker rods, and flanged valve connections. Supplied in coordination with API-spec steel pipes, fire protection loops, and industrial valves for one-stop MEP and fluid handling.
Procuring bulk steel from international sources requires rock-solid risk mitigation. HZXY provides end-to-end trace documentation, third-party testing protocols, and specialized export handling directly out of Tianjin Port.
Every bundle is hot-stamped with mill heat numbers directly correlating to accredited mechanical and spectroscopic chemical test certificates. Spectrographic analysis verifies phosphorus (P ≤ 0.035%) and sulfur (S ≤ 0.035%) limits, with zero mixed-grade lots guaranteed across shipments.
We welcome third-party technical inspection agencies before loading. Pre-shipment inspections routinely execute dimensional caliper checks, surface straightness verifications (≤ 2.0mm/m standard, ≤ 1.0mm/m precision), ultrasonic crack detection, and hot-dip zinc micrometer audits.
Positioned just 80km from Tianjin Xingang Port, shipments move smoothly under FOB, CFR, or CIF Incoterms. Steel bars are strapped with high-tensile metal banding, color-coded ends, anti-abrasive sling collars, and waterproof wrapping to prevent salt spray corrosion during ocean voyages.
Tianjin Administrative HQ
Tangshan Continuous Rolling Base
Tianjin Port Export Freight Yard
Automated Stacking Warehouse
Precision Surface Treatment Line
Tianjin Administrative HQ
Tangshan Continuous Rolling Base
Tianjin Port Export Freight Yard
Eliminate costly site fabrication delays. HZXY provides CNC multi-axis saw cutting, end beveling, precision threading, centerless grinding, and immersion hot-dip galvanizing under one roof.
Tolerances maintained within ±1.0mm utilizing high-speed carbide sawing arrays. Cuts are burr-free and ready for robotic weld cells, eliminating container dead space and minimizing scrap rates for project buyers.
High-efficiency automated hot-dip zinc baths generate uniform zinc-iron alloy layers compliant with ASTM A123 and ISO 1461. Zinc coatings from 450g/m² up to 610g/m² provide 40+ years of maintenance-free service life in aggressive C4/C5 environments.
Bar ends can be chamfered, bored, turned down, or roll-threaded to custom metric or imperial bolt pitches. Ideal for immediate anchoring into heavy foundation pile cages and bridge expansion tie-backs.
Leading the green transformation in long steel manufacturing: Electric Arc Furnace (EAF) integration, hydrogen-blend direct reduction, and real-time smart ultrasound tolerance control.
Deployment of non-contact high-speed laser calipers across rolling stands, achieving ultra-tight diameter tolerances (DIN 1013 / EN 10060 class A & B) at 1100°C delivery speeds.
Broader adoption of Vanadium (V) and Niobium (Nb) grain-refining additions in high-yield bars, improving low-temperature Charpy V-notch impact values at -40°C.
Scale-up of 100% green-powered Electric Arc Furnace (EAF) long product lines, lowering Scope 1 & 2 embedded carbon values below 0.65 tCO2e/t steel to meet EU CBAM mandates.
Pioneering pilot integrations of direct hydrogen iron reduction (DRI), delivering near-zero net emission solid rounds for the global clean energy infrastructure sector.
Essential answers for overseas procurement managers, EPC buyers, and technical auditors sourcing Chinese hot rolled round bar and long products.
Coordinate your round bar purchase with our primary rolled coils, tubular steel, MEP lines, and specialized infrastructure fittings for unified single-supplier logistics.
High-ductility carbon coils engineered for direct stamping, deep drawing, roll forming, and structural spiral/longitudinal pipe manufacturing.
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Multi-layer baked polyester/PVDF coating with high UV and corrosion resistance for agricultural and industrial roll-formed roofing systems.
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High-yield hot-dip zinc round tubular tubing (48.3mm OD standard) engineered for structural access towers and agricultural framing systems.
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Heavy ductile iron and cast steel valves engineered for municipal potable water supply, industrial HVAC networks, and fuel line shut-offs.
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Schedule 40 and custom gauge carbon ERW tubes in immediate ready-stock for foundational piling, structural trusses, and fluid transport.
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Red-painted groove-end pipes, sub-surface gas lines, and matching mechanical couplings certified for high-pressure distribution mains.
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Non-conductive, chemical-resistant thermoplastic conduits for underground high-voltage runs, telecom fibers, and municipal stormwater piping.
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Structural brackets, beam clamps, embed plates, and custom mounting tabs fabricated to project CAD drawings with hot-dip galvanizing.
Submit Part DrawingsSend your detailed bill of quantities, required grade specifications (GB, ASTM, EN, JIS), target diameters, and destination port. Our export metallurgical engineering team delivers a comprehensive CIF/FOB quote and production schedule within 24 hours.
