Featured Steel Profiles & Fast-Track Export Stock
Immediate dispatch available for bulk commercial inquiries across our 1,500-acre Daqiuzhuang and Tangshan manufacturing complexes. All mill test certificates (MTC EN 10204 3.1) guaranteed.
Wide-flange and standard beams cut to drawing, pre-punched, and optimized for rapid onsite erection.
View H-Beam Pricelist
Equal and unequal slotted angle iron with heavy zinc coatings for marine framework and telecommunication masts.
Request Angle Bar Quote
U/C-channel profiles suited for load-bearing purlins, civil bridges, and machine chassis fabrication.
Channel Steel Factory Price
High-tensile, clean-edged carbon flat strips engineered for earthing grids, metal grating, and structural flanges.
Flat Bar Discount Tiers
Precision slitting master coils for stamping, ERW pipe manufacturing, and roll-forming architectural sections.
Inquire Steel Coil Stock
Double-pass polyester/PVDF coated coils ensuring long-term UV resistance for cladding and corrugated roof sheets.
Browse PPGI Pricelist
Spangle-optimized, zero-passivated zinc finishes up to Z275 (275 g/m²) for HVAC ducts, appliances, and cable trays.
Check GI Coil Inventory
High-bonding seismic rib bars for structural foundations, high-rise pile caps, and major civil infrastructure.
Deformed Rebar QuotationGlobal Flat Bar Steel Procurement & Discount Pricing Architecture
In modern industrial engineering, procuring structural carbon flat bars (also known as flat steel or steel flats) requires moving beyond spot market guesswork. For engineering contractors, steel fabricators, and regional wholesalers, material margin stability depends on understanding mill-level cost determinants, raw billet spread indices, and volume discount brackets.
Billet-to-Rolling Cost Transparency
Flat bar steel pricing is strictly linked to continuous cast square billets (Q235 / Q355 / 20MnSi). Our Daqiuzhuang facilities operate fully automated reheating and continuous rolling strands, ensuring rolling margins stay within $45-$65 per metric ton above liquid carbon steel spot prices, eliminating middleman distributor markup.
- Direct integration with blast furnace raw melt
- Real-time billet conversion rate hedging
- Energy-efficient thermal recuperation lines
Tiered Volume Rebate Mechanics
Industrial buyers sourcing for long-term construction projects leverage scale. HZXY provides structured containerized and break-bulk discounts tied to annual procurement commitments and full container load (FCL) optimization.
- Tier 1 (25–100 MT): Standard spot wholesale discount (3–5% off catalog)
- Tier 2 (101–500 MT): Direct mill schedule pricing (6–9% rebate)
- Tier 3 (500+ MT / Annual Frame): Strategic alliance pricing with fixed rolling dates
Consolidated Container Logistics Optimization
Flat steel is an ideal deadweight filler in mixed project shipments. By pairing lightweight hollow conduits or welded pipes with high-density flat bar bundles, total ocean freight costs per metric ton decrease by up to 22% compared to single-category chartering.
- Payload optimization to maximum 27-28 MT per 20ft GP
- Port of Tianjin loading berths with direct rail sidings
- Moisture-resistant kraft and plastic export wrapping
Representative Dimensional Pricelist & Technical Tolerance Index
Note: Theoretical weights are based on standard carbon density (7.85 g/cm³). Indicative FOB Tianjin prices represent full container volumes and fluctuate with global iron ore indexes. Custom shearing and chamfering are quoted per engineering review.
| Thickness (mm) | Width (mm) | Theoretical Mass (kg/m) | Standard Yield (GB Q235B / ASTM A36) | Edge Profile | Est. FOB Tianjin Range ($/MT) | Primary Application |
|---|---|---|---|---|---|---|
| 3.0 mm | 20 – 50 mm | 0.471 – 1.178 | ≥ 235 MPa | Slit / Rolled Square | $485 – $520 | Cable tray brackets, earthing clamps |
| 5.0 mm | 25 – 100 mm | 0.981 – 3.925 | ≥ 235 MPa | Universal Mill / Round Edge | $475 – $505 | Welded grating, conveyor side rails |
| 8.0 mm | 40 – 150 mm | 2.512 – 9.420 | ≥ 235 / ≥ 355 MPa | Square Mill Edge | $465 – $495 | Equipment base plates, truck body frames |
| 12.0 mm | 50 – 200 mm | 4.710 – 18.840 | ≥ 355 MPa (Q355B / S355JR) | Deburred Flat Edge | $470 – $510 | Structural bridge gussets, column splices |
| 20.0 mm | 60 – 250 mm | 9.420 – 39.250 | ≥ 355 MPa / A572 Gr50 | Rolled / Saw Cut | $480 – $525 | Heavy machinery ways, anchor plates |
| 40.0 – 60.0 mm | 100 – 300 mm | 31.40 – 141.30 | ≥ 345 – 355 MPa | Cold Saw Cut Ends | $495 – $540 | High-pressure hydraulic flanges, counterweights |
International Structural Grade Equivalencies for Engineering Specifications
A key friction point in cross-border structural steel supply is discrepancies between local design codes. When EPCs design under American (ASTM), European (EN), or Japanese (JIS) frameworks, mill chemistry must be precisely controlled to avoid rejection at destination customs or structural load failures.
At HZXY Steel, every lot undergoes optical emission spectrometry (OES) to govern Carbon Equivalent Value (CEV), ensuring optimum weldability without pre-heating down to 0°C ambient environments:
CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15 ≤ 0.42% (Max)
Guaranteed low CEV eliminates heat-affected zone (HAZ) cracking during rapid robotic arc welding in structural prefabrication.
Yield Strength
235 MPa to >420 MPa
Elongation (A5)
≥ 24% to 26% ductility
Impact Toughness
Charpy V-Notch at -20°C
| Chinese Standard | US Standard (ASTM) | European Norm (EN) | Japanese Standard (JIS) | C (%) Max | Mn (%) Max | Tensile Strength (MPa) |
|---|---|---|---|---|---|---|
| GB/T 700 Q235B | ASTM A36 / A283C | EN 10025-2 S235JR | JIS G3101 SS400 | 0.20 | 1.40 | 370 – 500 |
| GB/T 1591 Q355B | ASTM A572 Grade 50 | EN 10025-2 S355JR | JIS G3106 SM490A | 0.24 | 1.60 | 470 – 630 |
| GB/T 699 20# | AISI / SAE 1020 | EN 10083 C22 | JIS G4051 S20C | 0.23 | 0.65 | ≥ 410 |
| GB/T 699 45# | AISI / SAE 1045 | EN 10083 C45 | JIS G4051 S45C | 0.50 | 0.80 | ≥ 600 |
Full-Cycle Fabricated Solutions Across Heavy Industry
Modern EPC project managers and OEM manufacturers cannot afford site-level manual cutting, hole-drilling, and rust-treating. Material must arrive ready to bolt and assemble. HZXY provides end-to-end downstream processing on flat bar runs within our specialized workshops.
Substation Earthing & Lightning Grids
In electrical infrastructure, hot-dip galvanized flat steel serves as underground grounding rings, perimeter mats, and down conductors. Our heavy HDG process achieves coating thicknesses up to 85 μm (>600 g/m²), passing 1,000-hour neutral salt spray (NSS) testing to withstand acidic and high-salinity soils for 30+ maintenance-free years.
- Sizes: 25×4mm, 40×4mm, 50×5mm
- Zinc layer adherence per ASTM A123 / ISO 1461
- Supplied with pre-punched connector slots
Industrial Steel Grating & Walkways
Offshore oil platforms, chemical plants, and municipal water stations utilize millions of meters of bearing flat bars. We deliver precision-slit, serrated or plain flats with tight camber and sweep tolerances (<1.5 mm per meter), guaranteeing clean robotic forge-welding with cross rods without weld blowout.
- Serrated and anti-slip edge processing
- Tensile stability prevents buckling under load
- Packaged in tight, sea-fastened crates
Automotive & Heavy Vehicle Chassis
Semi-trailer subframes, agricultural equipment, and mining conveyors demand predictable cold-bending performance. Utilizing controlled rolling schedules and thermo-mechanical control process (TMCP) steels, our flat bars withstand 180° bend tests without edge tearing or micro-fracturing along outer bend radii.
- Consistent gauge along full bar length
- Superior surface clean from heavy scale
- Ready for laser cutting and automatic punching
Global Supply Chain Trends, CBAM & Technical Roadmaps
The cross-border steel trade is navigating profound transformations: geopolitical trade measures, anti-dumping safeguards, and the European Union's Carbon Border Adjustment Mechanism (CBAM). Sourcing flat bar steel solely on initial ex-mill quotes can result in unexpected customs tariffs and port clearance rejections.
HZXY helps buyers navigate this regulatory landscape through clear documentation, carbon footprint auditing, and flexible shipping strategies:
Mill Quality Assurance, Inspection Standards & Seaworthy Delivery
Every metric ton of flat steel shipped through Tianjin Port adheres to strict testing and documentation protocols. We bridge the distance between Chinese manufacturing mills and destination job sites with complete visibility.
Dimensional Verification
Micrometer laser thickness gauging at line discharge prevents out-of-tolerance profiles. Thickness tolerance is governed within ±0.20 mm and width within ±0.50 mm on cold-finished and precision-rolled runs.
Independent Third-Party Audits
We welcome inspection by independent international agencies (SGS, Bureau Veritas, TÜV, Intertek) appointed by clients. Verification covers chemical melt analysis, tensile testing, bend tests, and zinc coating thickness confirmation before vessel departure.
Heavy Seaworthy Packaging
High-humidity ocean transits cause white rust and salt pitting if steel is poorly packed. Our bundles are strapped with heavy-gauge steel bands, equipped with lifting slings, and wrapped with UV-inhibited waterproof VCI barrier film for open-deck maritime protection.
Frequently Asked Questions by Overseas Steel Buyers
Essential details regarding order minimums, international certifications, pricing structures, and mixed-product shipments answered directly by our international trade division.
Where is HZXY located, and which port handles export shipments?
What international standards and steel grades are available for flat bars?
How does the discount structure work for bulk flat bar orders?
Can HZXY cut, punch, and galvanize flat bars before shipment?
Can we consolidate flat bar steel with coils, pipes, and rebar in one order?
What mill test certificates and QA documents accompany shipments?
Long Products, Structural Flats, Tubing & Flow Control Solutions
Complete your bill of materials through mixed-container consolidation. Explore round bars, drawn wire, heavy-duty structural flat steels, scaffold pipes, and pipeline gate valves directly from our northern China mills.
Solid round bars with high-corrosion-resistant zinc layers for tie rods, dowels, and precision shafting.
Inquire Round Bar Prices
Coiled carbon wire rod in 8 mm & 12 mm diameters for prestressed wire, fasteners, and redraw manufacturing.
Request Wire Rod Catalog
Uniform tensile and bright finish wire for nail fabrication, wire mesh welding, and binding applications.
Drawn Wire Quotation
Heavy zinc coating for substation earthing, industrial railings, and marine structural components.
Galvanized Flat Bar Pricing
Standard mill finish solid flats for workshop trusses, base plates, shear tabs, and heavy machinery.
Get Black Flat Bar Quote
Round welded structural tubes for scaffolding, shoring systems, greenhouse structures, and formwork props.
Scaffold Pipe Stock Price
Internal epoxy and external 3LPE coated conduits for industrial wastewater, slurry, and process gas pipelines.
Explore Pipeline Catalog
Gate, butterfly, check, and ball valves engineered to integrate seamlessly into civil MEP and industrial pipelines.
Inquire Industrial ValvesDownload the Full Flat Bar Steel Pricelist & Engineering Guide
Access complete chemical specifications, standard mill weight charts, container payload formulas, and volume discounts across all structural flat bar sizes. Reach out to our international sales team for project quotations within 24 hours.