Where is HZXY located and which port do you ship from?

HZXY is headquartered in the Daqiuzhuang Industrial Zone, Jinghai District, Tianjin, China, one of the largest steel processing clusters in the world, with a second production base in Tangshan. Most export orders are loaded through Tianjin Port; other Chinese ports can be arranged on request.

Which steel grades and standards can you supply?

Common grades include Q235B, Q355B (formerly Q345B), ASTM A36, DX51D to DX54D galvanized coil, and SAE1006, SAE1008 and SAE1080 wire rod. Materials can be supplied to GB, ASTM, EN and JIS standards, and equivalent-grade cross references are provided during order confirmation.

Do you provide mill test certificates and allow third-party inspection?

Yes. Shipments are delivered with test reports and qualification documents, and buyers are welcome to appoint independent inspection agencies to verify dimensions, coating and mechanical properties before loading.

Can you cut, weld or galvanize steel to custom sizes?

Yes. In-house processing covers cutting, welding, bending, stamping, drilling, hot-dip and electro-galvanizing, painting and export packaging, with non-standard sizes available across all product lines.

Can I combine different products in one shipment?

Yes. Because HZXY supplies sections, rebar, plates, coils, steel pipes, PVC pipes and valves, project buyers can consolidate mixed materials into one order and one shipment, reducing supplier management and freight costs.

How can I get the HZXY product catalog?

Visit the Request a Catalog page at https://www.hzxysteels.com/catalog/ or email tjhzxysteel@gmail.com to receive the latest catalog with sizes, grades and packing details.

Cheap Black Flat Bar Manufacturer & Pricelist

Direct-From-Mill Stock

Primary Structural Steel & Flat Bar Inventory

Immediate dispatch available across standard mill-finish black flat sections, commercial profiles, and engineered coil stock. Rigorous physical tolerances per ISO/GB/ASTM standards.

Hot Rolled Q235B Carbon Flat Bar (Mill Finish)

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Black Solid Structural Flat Bar Q235 / Q355 (3–60 mm)

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A36 / Q235 Grade Structural H-Beam Profiles

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Heavy-Duty Q235 / Q355 Flat Steel Sections (3-60mm)

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Q235B / Q345B Hot & Cold Rolled Carbon Steel Coil

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Hot Rolled C / U Profile Structural Channel Steel

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Equal & Unequal Structural Carbon Angle Steel Bar

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Black Mechanical Carbon Steel Tubular Pipe

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Enterprise Procurement Strategy

Global Corporate Procurement Architecture: Cheap Black Flat Bar

International EPC contractors, fabricators, and equipment manufacturers face intense margin pressure. Sourcing cheap black flat bars requires balancing rock-bottom base costs against metallurgical weldability, dimensional yield, and strict logistics delivery tolerances.

Total Cost of Acquisition (TCA)

Procuring budget-tier flat bar is not solely about invoice price per metric ton. It centers on minimizing secondary pre-treatment costs, straightness re-work, edge dressing, and defective welding rejects across production lines.

Cross-Standard Interoperability

Engineers need smooth material interchangeability between Chinese national standards (GB/T 700 Q235B, GB/T 1591 Q355B) and Western codes (ASTM A36, EN 10025-2 S235JR/S355JR, JIS G3101 SS400) without project friction.

Supply Security & Scalability

By leveraging Tianjin Huizhong Xinyu's direct mill connection in Daqiuzhuang and Tangshan, overseas supply networks insulate themselves against unpredictable commodity volatility and shipping delays.

1996

Established in Tianjin

10⁺_{M Tons}

Annual Mill Throughput

1,500_Acres

Tianjin & Tangshan Footprint

50⁺_Nations

Export Footprint Worldwide

Reference Pricing & Tolerances

Black Flat Bar Benchmark Pricelist & Dimensional Scope

Indicative baseline market prices (FOB Tianjin Port). Final quotes depend on bundle volumes, thickness tolerance requirements (EN 10058 / ASTM A6), carbon chemistry, and deep processing options.

Thickness × Width Range	Common Steel Grades	Length Std.	Approx. Price Range (FOB MT)	Dimensional Standard	Primary Industrial Use
3.0mm – 6.0mm × 20mm – 60mm	Q235B / ASTM A36 / S235JR	5.8m / 6.0m	$490 – $530	GB/T 706 / EN 10058	Cable trays, stamping brackets, light frames
8.0mm – 12.0mm × 40mm – 150mm	Q235B / Q355B / SS400	6.0m / 12.0m	$480 – $520	ASTM A6 / GB/T 704	Structural base plates, transmission towers
14.0mm – 25.0mm × 50mm – 200mm	Q355B / S355JR / A572 Gr.50	6.0m / 11.8m	$510 – $550	EN 10058 Class A	Heavy fabrication, machine beds, flange stock
28.0mm – 60.0mm × 80mm – 300mm	Q235B / Q355B / SAE1020	6.0m / Custom	$530 – $580	GB/T 704 Heavy	Bridge joints, rail guide blocks, heavy equipment
Slit Edge Flat Bar (Coil Derived)	Q235B / SAE1006 / SAE1008	Cut to Order	$475 – $510	JIS G3194	High-speed automated stamping, gratings

*Prices are indicative and subject to periodic raw material adjustments (billet/iron ore indices). Contact sales for bulk spot quotations.

Cross-Sector Applications

Macro-Sector Industrial Solutions

Black flat bar serves as fundamental raw stock across infrastructure, processing facilities, and engineering manufacturing worldwide.

Pre-Engineered Metal Buildings (PEB)

Functions as secondary framing components, purlin reinforcement plates, clip angles, gusset connection stiffeners, and bracing cross-ties within high-span industrial structures.

Solar Tracker & Energy Structures

Supplies mass torque-tube mounting brackets, foundation pile anchor plates, and ground-mount cross bars, ready for precision punching and high-durability HDG galvanizing.

OEM Machinery & Transportation

Provides dependable baseline stock for commercial trailer bed stiffeners, agricultural equipment sub-frames, counterweight spacers, and heavy automotive chassis assemblies.

Industrial Grating & Walkways

Accurately calibrated bearing bars for serrated or flat open-grid metal flooring, cat-walk access platforms, stair treads, and defensive drainage trench covers.

Integrated Value-Add Processing

From Mill-Finish Stock to Production-Ready Components

Tianjin Huizhong Xinyu integrates comprehensive pre-treatment and fabrication within our 1,500-acre industrial bases, cutting site fabrication costs for overseas buyers.

CNC Cutting & Shearing

High-speed cold shearing, saw cutting, and laser profiling to custom lengths. Burr-free end finishes reduce shipping cube dimensions and prevent on-site rework.

Precision Punching & Drilling

Automated multi-hole patterns, slots, and countersunk perforations. Matched directly to customer CAD drawings for structural connections and grounding leads.

Surface Protection & HDG

In-house shot blasting (Sa 2.5), black rust-preventive varnish dip, primer coating, and ISO 1461 hot-dip galvanizing with 80–120μm zinc layers.

Technology Roadmap & ESG

Metallurgical Precision, EAF Decarbonization & Digital Supply

The carbon steel industry is shifting toward lower carbon footprints and higher dimensional consistency. Here is how our production lines deliver reliable, cost-effective flat bar.

EAF Transition & Green Steel

Transitioning to continuous scrap-based Electric Arc Furnaces (EAF) significantly cuts Scope 1 and Scope 2 carbon emissions per ton, keeping products aligned with European CBAM guidelines.

Continuous Digital Rolling Mills

Automated hydraulic gauge controls (AGC) maintain edge squareness and thickness variations within ±0.12mm, eliminating camber deformities across standard 6-meter runs.

Mill Test Traceability (MTR)

Every batch carries clear heat-lot tracking numbers linked to EN 10204 3.1 certification. This provides full visibility into yield, elongation, tensile metrics, and chemical composition.

Global Regulatory Standards

Localization Compliance & Global Quality Assurance

Exporting structural flat bar across North America, the EU, the Middle East, Southeast Asia, and Africa requires compliance with regional construction codes and import regulations.

Certified Third-Party Verification

Orders support pre-shipment inspections through independent agencies including SGS, BV, and Intertek, covering dimensional verification, surface inspection, and tensile testing.

International Maritime Packaging

Bundles are secured with high-tensile steel strapping, corner protectors, and heavy plastic waterproof wrapping, preventing transit corrosion on long container and break-bulk routes.

Tariff & Trade Agreement Support

Experienced handling of Form E, Form A, COO certificates, and regional customs tariff documentation ensures streamlined clearance and optimized duty rates for buyers worldwide.

Procurement Knowledge Base

Frequently Asked Questions: Black Flat Bar

Clear answers to common questions about mill specifications, pricing variables, quality control, and shipping procedures.

What is the difference between true hot-rolled flat bar and slit-coil flat bar?

True hot-rolled flat bar is rolled on a dedicated merchant bar mill, delivering slightly radiused edges, uniform grain structures, and balanced transverse-longitudinal strength. Slit flat bar is produced by slitting master hot-rolled coil. While slit bar offers lower base pricing, it carries cut shear edges that may require deburring or edge conditioning for exposed applications.

Can Q235B black flat bar directly substitute for ASTM A36 in overseas builds?

In most structural applications, yes. Q235B provides a minimum yield strength of 235 MPa, which aligns closely with ASTM A36's 250 MPa (36 ksi) baseline for common gauges. Carbon, manganese, and silicon chemical compositions remain broadly equivalent, ensuring straightforward weldability without preheating across standard structural thicknesses.

Where is HZXY located, and which primary sea port is used for ocean shipments?

HZXY is headquartered in the Daqiuzhuang Industrial Zone, Jinghai District, Tianjin, China, alongside rolling mills and warehouse hubs in Tangshan. Most export orders are loaded through Tianjin Port (Xingang), with secondary logistics capabilities across other primary Chinese coastal shipping ports.

How can international project buyers combine diverse steel profiles into one order?

Because HZXY manufactures and stocks flat bar, H-beams, structural channel, angle sections, wire rod, steel pipe, and plastic piping systems, buyers can consolidate multiple products into mixed-container or unified break-bulk shipments. This consolidation reduces overall port logistics costs and simplifies customs administration.

What surface treatments are provided to prevent oxidation during sea transit?

Standard commercial export finishes include mill scale with light rust-preventive oil, high-coverage black dip painting, or clear anti-corrosion varnish. For severe coastal or underground operating environments, full hot-dip galvanizing per ASTM A123 or EN ISO 1461 can be completed in-house prior to export packing.

Extended Catalog