Shandong Baimaoxing Iron and Steel Co., Ltd.
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High-Quality Stainless Steel Round Bars (2mm, 3mm, 6mm) - China Suppliers & Factory Compliant with ASTM A479

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China stainless steel round bars are essential long, rectangular stainless steel profiles featuring a consistent circular cross-section. Our factory offers a variety of mainstream material grades, including 201, 304, and 316L, known for their exceptional corrosion resistance. With surface treatments such as pickling, 2B cold rolling, and mirror polishing, our products meet diverse industrial needs. Available in diameters from 5mm to 200mm and standard lengths of 6m, we also provide custom lengths to suit your specifications. Ideal for precision machining, building embedded components, and hardware manufacturing, these round bars deliver high rigidity and outstanding weather resistance, making them a preferred choice among reliable suppliers in many industries.

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    Stainless Steel Rod

    Stainless steel bars are long, round-sectioned stainless steel profiles, with mainstream grades including 201, 304, and 316L—316L stands out for its exceptional corrosion resistance in harsh environments. Their key advantages lie in strong corrosion resistance, high tensile strength, and good toughness, enduring moisture, pressure, and temperature variations. They're easy to machine, weld, or polish, with surface finishes like pickling, 2B, and mirror polishing blending functionality and aesthetics, boasting a longer service life than carbon steel bars.

    🏗️ Machinery & Construction Shafts, gears, fasteners, embedded parts, and structural supports.
    🚗 Automotive & Medical Suspension components, surgical instrument parts, and precision fittings.
    🔩 Hardware Production Handles, hinges, and various hardware accessories.

    Applications span industries: machinery manufacturing uses them for shafts, gears, and fasteners; construction employs them as embedded parts and structural supports; automotive sectors adopt them for components like suspension parts; medical fields utilize them for surgical instrument components; hardware production transforms them into handles and hinges.

    Installation requires pre-treatment—degreasing and derusting the surface. Connection methods depend on scenarios: welding for permanent joints, threaded machining for detachable connections, and precision fitting for mechanical parts. Post-installation, clean residues and inspect dimensional accuracy promptly.

    In use, avoid direct contact with carbon steel to prevent galvanic corrosion; outdoor applications need proper fixing to resist wind loads. For acidic/alkaline media, select 316L grade and check for wear regularly.

    Maintenance is straightforward: clean daily with neutral detergent; remove minor rust with specialized removers then re-passivate; inspect for cracks or deformation quarterly. Store in dry, ventilated areas to avoid moisture-induced rust, ensuring consistent performance across its service life.

    High-quality round metal bars (2mm, 3mm, 6mm) made of 201, 321, 304, 316, ASTM A479, or 410 stainless steel, conforming to stand (10)High-quality round metal bars (2mm, 3mm, 6mm) made of 201, 321, 304, 316, ASTM A479, or 410 stainless steel, conforming to stand (1)

    Product Parameters
    Product Name Stainless Steel Bar
    Item Value
    Standard ASTM, GB
    Place of Origin China
    Model Number 304
    Application Building, Mechanical
    Tolerance ±1%
    Processing Service Bending, Welding, Decoiling, Punching, Cutting
    Steel Grade 301, 304N, 310S, 410, 316Ti, 316L, 441, 316, 420J1, 321, 410S, 410L, 436L, 443, S32304, 314, 347, 430, 309S, 304, 439, 409L, 420J2, 436, 445, 304L, 904L, 444, 301LN, 429, 304J1, 317L
    Surface Finish Black, Bright
    Delivery Time 8–14 Days
    Shape Round
    Grade 200 Series / 300 Series / 400 Series

    Packing And Shipping
    High-quality round metal bars (2mm, 3mm, 6mm) made of 201, 321, 304, 316, ASTM A479, or 410 stainless steel, conforming to stand (1) (12)High Quality Stainless Steel 201 304 316L Stainless Steel Sheet Plate

    Frequently Asked Questions
    What are the main differences between 304 and 316L stainless steel bars?
    304 stainless steel bars offer good general corrosion resistance and are suitable for most everyday applications including construction and machinery. 316L contains additional molybdenum, which significantly enhances its resistance to chloride-induced corrosion, making it the preferred choice for harsh environments, marine applications, and acidic or alkaline media.
    What surface finishes are available for stainless steel bars?
    Stainless steel bars are available in multiple surface finishes, including black (as-rolled), bright (polished), pickling finish, and 2B finish. Mirror polishing is also available for decorative or high-hygiene applications. The choice of finish affects both aesthetics and corrosion performance.
    How should stainless steel bars be installed and connected?
    Before installation, the surface should be pre-treated by degreasing and derusting. Connection methods vary by application: welding is used for permanent joints, threaded machining is suitable for detachable connections, and precision fitting is applied for mechanical components. After installation, clean any residues and verify dimensional accuracy promptly.
    How do I prevent galvanic corrosion when using stainless steel bars?
    To prevent galvanic corrosion, avoid direct contact between stainless steel bars and carbon steel components. Use insulating materials or coatings at contact points where mixed metals are unavoidable. For outdoor or corrosive environments, select 316L grade and ensure proper protective measures are in place.
    What is the recommended maintenance routine for stainless steel bars?
    For daily maintenance, clean with a neutral detergent and soft cloth. Minor rust spots can be treated with a specialized stainless steel rust remover followed by re-passivation. Conduct quarterly inspections for cracks, deformation, or surface wear. Store bars in dry, well-ventilated areas away from moisture to prevent rust and maintain long-term performance.
    What is the typical delivery time and what processing services are offered?
    Standard delivery time is 8 to 14 days depending on order size and specifications. Available processing services include bending, welding, decoiling, punching, and cutting. Custom sizes and tolerances of ±1% can be accommodated to meet specific project requirements.

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