Stainless Flat Steel Bar

All Grades (304/316L/2205) In-Stock| Get an Official Quotation for Your Project

Supplying high-performance flat bars for water treatment, construction, and chemical infrastructure. Available in 304, 316L, 2205, and 444 grades to match your specific environmental requirements.

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  • Excellent Corrosion Resistance

    Superior to 430 in neutral salt spray, close to 316L; suitable for water treatment.

  • Nickel-Free & Eco-Friendly

    Ni content ≤0.5%, meets food contact standards; can replace 316L in non-highly corrosive scenarios.

  • Good Workability

    Annealed hardness ≤183 HB, easy to cut and weld; thermal expansion coefficient close to carbon steel.

Product Specifications

Chemical Composition Table (GB/T 1220-2007)
Element C ≤ Si ≤ Mn ≤ P ≤ S ≤ Cr Mo
Content % 0.025 1 1 0.035 0.03 17.0–19.0 1.75–2.5
Physical & Chemical Properties
  • Physical Properties: Density 7.7 g/cm³, melting point 1427–1510 °C, thermal conductivity 26 W/(m·K) (20 °C).

  • Mechanical Properties (Annealed): Tensile strength ≥415 MPa, elongation ≥22%, hardness ≤183 HB.

  • Chemical Properties: Excellent corrosion resistance in drinking water and neutral salt solutions; not resistant to strong acids or Cl⁻ concentrations >1000 ppm.

Specifications & Supply Dimensions

Reference cross-section sizes (GB/T 704-2008):

Width (mm) Thickness (mm) Theoretical Weight (kg/m)
20 3 0.447
50 5 1.962
100 8 6.28
  • Length: Standard 6 m; cut-to-length 1–6 m; minimum order 50 kg.

  • Surface: Hot-rolled black skin, pickled and passivated (enhanced corrosion resistance), cold-drawn bright (Ra ≤1.6 μm).

Pricing Calculation

Workshop & Manufacturing Machine

Stainless Steel Profiles on Storage Racks

Spectrometer for Alloy Composition Analysis

Profile Weighing with Crane Scale

Factory Stacking of Stainless Steel Profiles

Packaged Stainless Steel Profiles for Shipment

Worker Loading Profiles onto Truck

Product Applications

  • Desalination & Water Infrastructure (Gulf Region)

    Supplying 316L flat bars for support structures in high-salinity environments (Cl⁻ resistant).

  • Food Equipment

    Milk storage tank support (50×5 flat bar, BA surface, meets FDA standards).

  • Water Treatment

    Pipe support at a municipal water plant (100×8 flat bar, resistant to Cl⁻ ≤200 ppm in drinking water, service life >15 years).

Which Material Fits Your Project?

  • 304/304L: The industry standard for general construction and architectural supports.

  • 316/316L: Preferred for desalination plants and coastal areas with high chloride exposure.

  • 2205 Duplex: High-strength choice for heavy-load industrial infrastructure and sour oil & gas environments.

  • 444 Ferritic: Cost-effective solution for municipal water treatment (30% lower cost than 316L).

FAQs

How do I choose between 304, 316L, 2205, and 444 grades for my project?
 Selection depends on your environmental exposure. 304 is ideal for general architectural use. 316L offers superior corrosion resistance for coastal or desalination projects. 2205 Duplex is recommended for high-pressure, heavy-load industrial infrastructure. 444 Ferritic is a cost-effective choice for municipal water treatment.
Do your flat bars meet international standards for overseas projects?
Yes. We provide full traceability for every batch. Our products are compliant with GB/T 704 and ASTM standards, and we supply complete MTR (Mill Test Reports), PED, and SGS inspection documentation for all international shipments to ensure seamless import and compliance.
Is your inventory available for immediate dispatch?
We maintain over 300 tons of stock in our Wuxi warehouse, covering a wide range of standard thicknesses and widths. For urgent projects, we can provide real-time video verification of your specific order before dispatch.
Can you provide cut-to-size services for specific project needs?
Absolutely. We offer precision cut-to-length services (1–6m range) with a tolerance of ±0.5mm. Whether you need hot-rolled black skin or cold-drawn bright finishes (Ra ≤1.6μm), we customize every order to match your fabrication specifications.
How do you handle shipping to the Middle East and other international regions?
We have extensive experience exporting to the Gulf region and global markets. We ensure rigorous packaging—including anti-rust protection and reinforced pallets—to withstand long-distance transit. We provide all necessary shipping documentation to ensure smooth customs clearance.
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