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Stainless Steel Bar
Stainless Steel Bar

Stainless Steel Bar

Stainless steel bar is a solid, long-section product available in various cross-sectional shapes, including round, square, flat, and hexagonal. It is manufactured through hot rolling or cold drawing processes, delivering exceptional strength, corrosion resistance, and dimensional accuracy. As a fundamental raw material for machining and fabrication, stainless steel bar serves as the starting point for countless precision components across industrial, marine, and architectural applications.
Material Grades:
Austenitic (Most Common): ASTM 304/304L, ASTM 316/316L (marine grade), 321, 310S.
Martensitic: 410, 420 (wear-resistant, heat-treatable).
Ferritic: 430.
Precipitation Hardening: 17-4 PH (high strength).
Bar Shapes:
Round Bar: Most versatile, for machining and general fabrication.
Square Bar: For architectural details, shafts, and decorative applications.
Flat Bar: For brackets, supports, and structural reinforcements.
Hex Bar: For fasteners, nuts, and valve components.


    Stainless steel bar (also known as stainless steel rod) is a versatile long product prized for its excellent corrosion resistance, high strength, and outstanding machinability. As a fundamental construction and finishing material, stainless steel bars are extensively used across a broad range of industrial, commercial, and architectural applications . Our stainless steel bars are manufactured from prime quality billets sourced from leading mills such as Baosteel, TISCO, and POSCO, ensuring consistent chemical composition, precise dimensional tolerances, and superior mechanical properties.

    Available in multiple shapes—including round, square, flat, hexagon, and angle—and a comprehensive range of sizes and surface finishes, our stainless steel bars are engineered to meet the demanding requirements of applications from precision machined components and valve stems to architectural railings and food processing equipment.

    Key Features & Advantages

    • Diverse Material Grades: Extensive stock of Austenitic, Ferritic, Martensitic, Duplex, and Precipitation-Hardening grades to match specific mechanical and chemical requirements.

    • Precision Dimensions: Tight tolerance control on diameter, width, and straightness ensures minimal waste during CNC machining and automated production.

    • Superior Surface Quality: Options range from black/hot-rolled surfaces to bright cold-drawn, peeled, and mirror-polished finishes (Ra values available upon request).

    • Excellent Machinability: Grade 303 and specialized treatments ensure high cutting speeds and extended tool life for complex part manufacturing.

    • Enhanced Mechanical Properties: Optimized tensile strength, yield strength, and hardness through controlled rolling and heat treatment processes.

    • Corrosion & Heat Resistance: Ideal for harsh environments including seawater exposure, chemical processing, and high-temperature applications.

    • Traceability: Full material traceability with Heat Numbers and Mill Test Certificates


    Product Specifications

    Item

    Details

    Stainless Steel Grade

    201, 202, 301, 304, 304L, 316, 316L, 321, 309S, 310S, 409L, 410, 420, 430, 904L

    Product Type

    Round Bar (most common), Square Bar, Hexagonal Bar, Flat Bar, Threaded Bar, Solid Bar (customizable section type)

    Section Size

    Round Bar: Φ3mm - Φ500mm

    Square Bar: 5mm×5mm - 300mm×300mm

    Hex Bar: 6mm - 100mm

    Flat Bar: 2mm×10mm - 50mm×300mm (customizable)

    Length

    Standard: 6m, 12m; Customizable: 1m - 12m (cut to length available, minimum 0.5m)

    Production Process

    Hot Rolling (cost-effective, for general use)

    Cold Drawing (high precision, smooth surface)

    Forging (high strength, for heavy-load components)

    Surface Finish

    Mill Finish, Polished (2B, BA, Mirror Polish), Pickled, Brushed, Annealed, Sandblasted (customizable for different applications)

    International Standards

    ASTM A276, ASTM A484, GB/T 1220, EN 10088-3, JIS G4303

     

    Widely Used Application Scenarios

    • Machinery Manufacturing: Precision parts, gears, shafts, bolts, nuts, bearings, connectors, and mechanical components, leveraging its high strength and machinability.

    • Automotive Industry: Engine parts, transmission components, chassis parts, decorative trims, and fasteners, ensuring durability and corrosion resistance in automotive working environments.

    • Construction & Architecture: Structural supports, handrails, guardrails, door and window hardware, decorative components, and curtain wall fasteners, suitable for indoor and outdoor use.

    • Aerospace & Precision Equipment: Precision parts for aerospace equipment, electronic equipment, and medical devices, requiring high dimensional accuracy and stable performance.

    • Food & Beverage Industry: Sanitary equipment parts, food processing machinery components, and fasteners (compliant with FDA standards, non-toxic and hygienic, easy to clean).

    • Chemical & Petrochemical Industry: Anti-corrosion parts, pipeline connectors, reaction kettle components, and fasteners, resistant to chemical corrosion and high temperatures.

    • Medical & Pharmaceutical: Medical device parts, surgical instruments, and pharmaceutical equipment components, meeting strict hygiene and precision requirements.

    • Hardware & Tools: Hand tools, cutting tools, hardware accessories, and fasteners, leveraging its wear resistance and toughness.

    • Marine & Coastal Engineering: Ship parts, offshore platform components, and coastal hardware, resistant to saltwater corrosion and harsh outdoor environments.

    • Packaging: Each bar is wrapped with plastic film to prevent rust and scratch; small bars are packed in cartons, and large bars are bundled with steel strips and packed in wooden cases or pallets (waterproof, moisture-proof, anti-collision). Threaded bars are protected with plastic caps to avoid thread damage.


    Why Choose Our Stainless Steel Bar?

    • Strict Quality Control: From raw material selection to production and inspection, each bar is strictly tested to ensure consistent quality, dimensional accuracy, and mechanical performance.

    • Full Inventory & Fast Delivery: Sufficient stock of standard grades and types, supporting quick delivery (3-7 days for in-stock products) to meet your urgent production needs.

    • Professional Customization: Our experienced engineering team provides OEM/ODM services, tailoring size, grade, surface finish, and length to your specific machining and project requirements.

    • Competitive Factory Price: Direct supply from the factory, eliminating middlemen, offering favorable prices for bulk orders.



    Ready to secure stainless steel bars materials for your next construction or industrial project? 

    Contact our sales team today for a detailed quote or technical consultation. We're here to help you find the right solution for your specific requirements.

    Tel/Whatsapp/Wechat: +86 173 2728 8611

    Emailsales01@huafulai-js.com





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