Certified Mill Production Lines: 20mm Round Bar & Complements
Procure CE-ready structural bars, sections, and engineered steel profiles directly from our 1,500-acre Tianjin and Tangshan production hubs.
Galvanized Plain Round Bar
Hot-dip galvanized plain solid round bar with superior zinc adhesion, high yield integrity, and dimensional consistency.
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Deformed Rebar 6mm–12mm
Hot-rolled ribbed steel rebar for high-load concrete reinforcement, civil pilings, and infrastructure footings.
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Solid Square Steel Bar
Hot-rolled solid square steel profiles engineered for mechanical forging, boundary fencing, and structural components.
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Galvanized Flat Steel 3–60mm
Corrosion-resistant flat sections for electrical earthing grids, architectural brackets, and industrial framing.
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Structural Steel H-Beams
Standard and wide-flange structural H-beams for heavy industrial plant frameworks, bridges, and commercial columns.
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Equal / Unequal Angle Steel
Pre-punched and solid structural angle steel profiles with customizable zinc layer thickness for power transmission towers.
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U & C Profile Channel Steel
High-precision structural channels for architectural purlins, equipment sub-bases, and transport vehicle chassis.
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High Carbon Wire Rod
Industrial coiled wire rod tailored for secondary drawing, fastener fabrication, pre-stressed wire, and nail manufacture.
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Securing valid CE conformity requires strict compliance with System 2+ Factory Production Control (FPC) audits, metallurgical homogeneity, and mechanical integrity verification.
System 2+ Assessment Verification
Structural CE marking under the EU Construction Products Regulation (CPR 305/2011) and EN 10025-1 requires third-party notified body surveillance. Our mills maintain continuous FPC verification, ensuring yield strengths (ReH ≥ 235–355 MPa) and Charpy V-notch impact toughness (27J at 20°C or 0°C) meet all harmonized standards.
Carbon Equivalent Value (CEV) Control
For welded assemblies and high-stress structural joints, precise carbon equivalent computation is vital. We strictly maintain CEV below 0.38% (for S235) and 0.45% (for S355), guaranteeing exceptional weldability without localized embrittlement or micro-cracking across precision CNC cut parts.
Full Heat-to-Billet Traceability
Every single bundle of 20mm round bar ships with complete Mill Test Certificates conforming to EN 10204 Type 3.1 or 3.2. Detailed spectral chemistry (C, Mn, Si, P, S), tensile and yield performance, and elongation ratios (A5 ≥ 22%) are documented and heat-stamped directly on the steel tags.
Localized Deployment Profiles: 20mm Round Bars Across Global Sectors
The 20mm solid diameter profile serves as a core mechanical anchor across civil infrastructure, foundation stabilization, and precision machining projects.
Anchor Bolts & Foundation Hold-Downs
S355JR and ASTM A36 20mm round bars are cut, threaded, and cold-bent into L-bolts and J-bolts for structural steel columns, wind turbine base plates, and heavy machinery foundations demanding exceptional pullout resistance.
Marine Infrastructure & Tie Rods
When hot-dip galvanized to ISO 1461 standards (>85 μm coating), 20mm round bars function as horizontal tie-back rods for sheet-pile retaining walls, coastal quays, and breakwater reinforcements exposed to aggressive chloride environments.
Shafting & CNC Precision Machining
Cold-drawn 20mm bars with EN 10060 h9/h11 diametrical tolerances serve as shafting blanks, hydraulic cylinder pins, track guide pins, and agricultural machinery spindles requiring low surface roughness and high concentricity.
Tension Bracing & Space-Frame Facades
Utilized extensively in cross-bracing frameworks for airport terminals, sports stadiums, and distribution warehouses. High-strength S355 20mm bars provide seismic resistance and wind-load tensioning, preventing lateral frame deflection while offering clean architectural sightlines.
China Factory Supply Chain Resilience & Global Speed Advantage
Leveraging the Daqiuzhuang industrial ecosystem to minimize cost volatility, eliminate production bottlenecks, and ensure reliable worldwide delivery.
Cluster Proximity
Located in Daqiuzhuang, Jinghai, Tianjin, our production bases operate alongside rolling mills, billet suppliers, and galvanizing lines, drastically shortening inland transit times.
Direct Deep-Sea Berth
Orders are consolidated directly at Tianjin Port (Xingang), offering automated container stuffing and break-bulk vessel berths with transit schedules to 50+ nations.
Raw Material Hedging
With an annual processing capacity exceeding 10 million tons, our procurement team cushions overseas contractors from raw steel index volatility via rolling stock reserves.
All-In-One Consolidation
Consolidate 20mm round bars, H-beams, hollow sections, PVC drainage piping, and industrial valves in a single container, lowering documentation and clearance fees.
International Grade Alignment for 20mm Solid Round Steel Bars
Equivalence breakdown matching European standards (EN), American testing guidelines (ASTM), and Chinese national codes (GB).
| Steel Grade (EU) | Standard | US Equivalent (ASTM) | China Equivalent (GB) | Min. Yield Strength (ReH) | Tensile Strength (Rm) | Charpy V-Notch |
|---|---|---|---|---|---|---|
| S235JR CE Certified | EN 10025-2 | A36 / Gr. 36 | Q235B | ≥ 235 MPa | 360 – 510 MPa | 27 J at +20°C |
| S275JR CE Certified | EN 10025-2 | A572 Gr. 42 | Q275B | ≥ 275 MPa | 410 – 560 MPa | 27 J at +20°C |
| S355JR High Yield | EN 10025-2 | A572 Gr. 50 | Q355B (GB/T 1591) | ≥ 355 MPa | 470 – 630 MPa | 27 J at +20°C |
| S355J2 Low Temp | EN 10025-2 | A572 Gr. 50 (Mod) | Q355D | ≥ 355 MPa | 470 – 630 MPa | 27 J at -20°C |
| C45E / 1.1191 | EN 10083-2 | AISI 1045 | 45# Carbon Steel | ≥ 370 MPa (Quenched) | ≥ 630 MPa | Dependent on Heat Treatment |
Technology Roadmap: Green Steel & Smart Metallurgical Traceability
The global round bar procurement horizon is transforming through decarbonization, precision sensors, and digital conformity systems.
Electric Arc Furnace (EAF) Decarbonization
By shifting to direct reduced iron (DRI) and green scrap melting in high-efficiency EAF lines, our partner mills are cutting embodied carbon per ton of round bar below 0.6t CO2, anticipating European CBAM requirements.
In-Line Laser Profilometry & Defect Detection
Rolling lines utilize 360-degree high-frequency optical laser gauges to track cross-section roundness down to microns, instantly identifying surface seams, lap lines, or out-of-round ovality before cold packaging.
Cryptographic QR Material Passports
CE-marked 20mm bundles are transitioning to tamper-proof QR code passports etched on tags, providing engineering inspectors instant cloud verification of tensile tests, chemical composition, and batch origin.
Frequently Asked Questions: CE Certification 20mm Round Bars
Key technical answers for procurement directors, civil structural consultants, and import compliance managers.
What differentiates CE-certified 20mm round bars from standard commercial mild steel?
CE-certified 20mm round bar conforms to EN 10025-2 structural standards backed by a Notified Body's initial type testing and continuous Factory Production Control (FPC) audit (System 2+). This assures the buyer of verified yield and tensile ranges, elongation guarantees, certified Charpy V-notch energy impact testing, and controlled chemical limits for weldability, complete with a Declaration of Performance (DoP).
What are the standard dimensional tolerances for a 20mm round bar under EN 10060?
Under EN 10060 (dimensions and tolerances for hot-rolled round bars), a nominal diameter of 20mm falls within the >15mm to ≤25mm category, which permits a limit deviation of ±0.40mm on diameter and a maximum ovality tolerance of 75% of the total permissible diameter range.
Can HZXY supply custom cut lengths, threaded ends, or pre-bent 20mm bars?
Yes. Our in-house processing centers in Tianjin and Tangshan handle high-precision cold sawing (fixed-length ±2mm tolerance), robotic thread cutting, CNC bending into U-bolts and anchor J-bolts, hot-dip galvanizing, and specialty bundling to fit standard 20ft and 40ft ocean containers.
How does HZXY manage third-party quality inspections (SGS, BV, TUV)?
We welcome third-party inspection firms appointed by the client. We coordinate seamless on-site access to our warehouses and testing labs for random sampling, chemical spectrometry, dimensional verification, and packaging checks prior to vessel loading at Tianjin Port.
Can 20mm round bars be mixed with structural steel pipes, coils, and valves in one shipment?
Yes. As a comprehensive structural steel and building material exporter, HZXY allows customers to consolidate 20mm round bars with H-beams, deformed rebar, steel coils, galvanized pipes, and valves under a single Bill of Lading, reducing overall freight handling costs.
Complementary Steel Products & Structural Pipelines
Combine your 20mm round bar shipment with certified project materials from our heavy production facilities.
Carbon Steel Coils (HR & CR)
Hot-rolled structural and bright cold-rolled coils with slit-edge processing for stamping, folding, and pipe-making.
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PPGI & PPGL Coated Coils
Polyester and PVDF coated galvanized steel coils in RAL colors for corrugated exterior cladding and roof decks.
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Galvanized Scaffolding Pipe
Zinc-coated high-yield circular hollow sections engineered for temporary access scaffolding and falsework props.
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Anti-Corrosion Utility Pipe
Heavy-duty coated carbon steel line pipe for municipal fluid transfer, slurry management, and fuel gas systems.
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Industrial Pipeline Valves
Flanged gate, ball, check, and butterfly control valves calibrated for water supply, fire protection loops, and HVAC piping.
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PVC-U / HDPE Pipeline Systems
Pressure and non-pressure plastic pipe infrastructure for agricultural irrigation, potable water supply, and municipal discharge.
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Cable Conduit & Cable Ducting
Rigid conduit lines engineered to protect electrical distribution and fiber optic telecommunication runs in industrial complexes.
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Standard Universal I-Beams
Hot-rolled universal beams for secondary floor beams, bridge deck stiffeners, and overhead gantry crane runway tracks.
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Contact our engineering export department to confirm current mill rollings, standard packaging options, and FOB/CIF pricing for your destination port.