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Stainless Steel Round Pipe
Stainless Steel Round Pipe

Stainless Steel Round Pipe

Our Stainless Steel Round Pipes and Tubes are precision-engineered to meet the demanding requirements of modern industries. Available in both seamless and welded construction, these products offer exceptional corrosion resistance, high strength, and excellent formability. Manufactured in accordance with international standards (ASTM, ASME, EN, JIS), they are suitable for critical applications ranging from high-pressure fluid transmission to architectural structures.
Whether you need standard schedules or custom dimensions, our pipes and tubes deliver consistent quality, tight tolerances, and reliable performance. With a wide range of grades and surface finishes, we provide solutions tailored to your specific environmental and mechanical needs.


    Key Advantages for Global Buyers

    We understand your procurement pain points—quality risks, high costs, delivery delays, and compliance issues. 

    Our stainless steel round pipes address these challenges with the following advantages:

    • Superior Corrosion Resistance: Made of high-purity stainless steel, our pipes resist rust, oxidation, and chemical erosion (especially 316L grade for coastal, marine, and chemical industries). This reduces maintenance and replacement costs, extending the service life of your projects.

    • Cost-Effective Procurement: Direct factory supply eliminates middlemen, offering competitive wholesale prices.

      We support bulk orders with preferential discounts, and standard sizes help you control inventory costs. For custom orders, we optimize production to avoid material waste.

    • Global Certification & Quality Assurance: All products comply with ISO 9001, ISO 14001, and international standards (ASTM, JIS, GB).

      We provide full test reports (chemical composition, mechanical properties, corrosion resistance) and SGS/BV certification to ensure compliance with your local regulations—avoiding quality disputes and customs issues.

    • Flexible Supply & Fast Delivery: We maintain sufficient stock of standard sizes (304, 316L, common diameters) for immediate shipment (lead time: 7–15 days).

      Custom orders are produced efficiently with a lead time of 20–30 days. Our global shipping partners (Maersk, COSCO) ensure on-time delivery to any port worldwide.

    • Wide Versatility: One product fits multiple industries, reducing your procurement complexity.

      Whether for construction, food processing, or medical equipment, our pipes meet diverse application needs without compromising performance.

    Core Product Specifications (Buyer-Focused)

    We provide a full range of standard and custom stainless steel round pipes, strictly adhering to international standards to ensure dimensional accuracy and product stability—helping you avoid rework, reduce costs, and meet project requirements efficiently.

    Specification CategoryDetailsBuyer Benefit
    Material Grade304, 316L, 304L, 321 (equivalent to ASTM A249, A269, JIS G3459, GB/T 12771)304: Cost-effective, corrosion-resistant for general use (most popular for daily procurement) - 316L: High corrosion resistance (against saltwater, chemicals) for harsh environments - Global standard grades ensure compatibility with your local projects and customs clearance
    Size Range- Outer Diameter (OD): 6mm – 219mm - Wall Thickness (WT): 0.8mm – 10mm - Length: 6m, 9m, 12m (standard); custom lengths (3m–12m) availableCovers small-diameter (for piping systems) to large-diameter (for structural use) needs - Custom lengths reduce cutting waste and labor costs; standard lengths ensure easy inventory management
    ToleranceOuter Diameter: ±0.05mm; Wall Thickness: ±0.03mm; Length: ±50mmPrecise dimensions ensure perfect fitting during installation, reducing rework and project delays
    Surface Treatment2B (matte), BA (mirror), Polished (400#–800#), Pickled & Passivated2B: Low cost, suitable for indoor/non-decorative applications - BAMirror: High aesthetics for decorative, food, or medical use - Pickled & Passivated: Enhances corrosion resistance for outdoor/chemical environments
    Mechanical Properties- Tensile Strength: ≥515MPa - Yield Strength: ≥205MPa - Elongation: ≥40% - Weldable, bendable, cuttableEasy to fabricate into custom components; durable under load-bearing and high-pressure conditions
    Packing & ShippingBundle packing (waterproof paper + steel straps), wooden pallets; custom marking (logo, grade, size) available; FOB/CIF/DAP terms supportedSecure packing prevents scratches/damage during long-distance shipping - Custom marking simplifies inventory management and brand promotion - Flexible shipping terms adapt to your logistics needs


    Dimensional Specifications & Tolerances (Based on ASTM A312 / A269)

    ParameterRangeTolerance
    Outer Diameter (OD)6 mm – 60.3 mm± 0.10 mm – ± 0.15 mm
    60.3 mm – 168.3 mm± 0.20 mm – ± 0.30 mm
    > 168.3 mm± 0.5% of OD
    Wall Thickness (WT)SCH 5S – SCH 40S± 10% of nominal

    SCH 80S – XXS-1.6
    LengthRandom mill lengths (5–7 m)As per standard

    Fixed / Cut-to-length± 3 mm
    Surface FinishPickled (2B), Polished (180–400 grit), Bright Annealed, Mirror (600 grit)As specified

    Note: Tighter tolerances are available upon request for precision applications.

    Shipment Inspection (Critical for Global Buyers)

    We understand that product quality before shipment is a top concern for international buyers—any defect during transportation or non-compliance with standards will cause you extra costs and delays. Therefore, we implement a strict three-step shipment inspection process to ensure every batch of products meets your requirements:

    1. Pre-Inspection (Before Packing): Our quality control team checks each pipe’s material grade (via spectral analysis), dimensional accuracy (using calipers and tape measures), surface condition (no scratches, rust, or defects), and mechanical properties (random sampling test). Only products that pass all indicators can enter the packing process.

    2. Packing Inspection: We inspect the packing integrity—ensuring waterproof paper is intact, steel straps are tight, and wooden pallets are sturdy. For custom marking, we verify that all labels (grade, size, batch number) are accurate and clear, avoiding confusion during customs clearance and inventory management.

    3. Final Inspection (Before Shipment): Before loading, we conduct a random sampling inspection again, and can arrange third-party inspection (SGS/BV) at your request. We provide a detailed inspection report (including test data, packing photos, and sampling results) for your records, ensuring transparency and accountability.

    Primary Applications (Aligned with Buyer Use Cases)

    1. Our stainless steel round pipes are widely used across global industries, solving your need for versatility, reliability, and compliance. Key applications include:

    2. Construction & Architecture: Handrails, balustrades, decorative frames, water supply/drainage systems, curtain wall supports—ideal for commercial buildings, residential complexes, and public infrastructure (meets high aesthetic and durability requirements).

    3. Food & Beverage Industry: Piping for water, juice, dairy, and food processing—304/316L grades are non-toxic, easy to clean, and compliant with food safety standards (FDA, EU food contact regulations).

    4. Chemical & Pharmaceutical Industry: Pipes for transporting chemicals, acids, and pharmaceutical raw materials—316L grade’s strong corrosion resistance prevents leakage and ensures product purity.

    5. Marine & Coastal Projects: Shipbuilding, offshore platforms, coastal handrails—resistant to saltwater corrosion, reducing maintenance costs in harsh marine environments.

    6. Mechanical & Equipment Manufacturing: Machine frames, hydraulic piping, industrial equipment components—easy to fabricate and durable under high-pressure conditions.

    FAQs (Frequently Asked Questions for Buyers)

    We’ve compiled the most common questions from global buyers to help you make informed procurement decisions, including key concerns about shipment inspection:

    • Q: Do you provide certification and test reports?

      A: Absolutely. We provide ISO 9001 certification, SGS/BV test reports (chemical composition, mechanical properties, corrosion resistance), and material certificates for each batch.

      If you need additional local certifications (e.g., FDA for food industry), we can assist in applying.

    • Q: What is the lead time for orders?

      A: Standard sizes (in stock): 7–15 days.

      Custom orders: 20–30 days. For bulk orders (over 10 tons), we can shorten the lead time by optimizing production schedules.

      We will provide a detailed delivery schedule after order confirmation.

    • Q: How do you ensure product quality during shipping?

      A: We use waterproof paper + steel straps for bundle packing, and wooden pallets for fragile orders to prevent scratches, dents, or rust.

      We also add anti-rust oil for long-distance shipping.

      Additionally, we can purchase shipping insurance for your order to avoid losses due to transportation accidents. Strict shipment inspection before loading further ensures product quality.

    • Q: Can I arrange third-party inspection (e.g., SGS/BV) before shipment?

      A: Yes. We fully cooperate with third-party inspection agencies.

      You can designate SGS, BV, or other trusted agencies to conduct on-site inspection before shipment.

      We will provide all necessary documents and assist the inspection team to complete the process efficiently—no extra fees for our cooperation.

    • Q: What payment terms do you support for international buyers?

      A: We support flexible payment terms: TT (30% deposit + 70% before shipment), L/C at sight, and Western Union.

      For long-term cooperative buyers, we can provide more favorable payment terms (e.g., 10% deposit + 90% after receipt of goods).

    We are committed to providing you with high-quality stainless steel round pipes, professional procurement support, strict quality control, and seamless after-sales service. Whether you are a distributor, contractor, or manufacturer, we can tailor a solution to meet your specific needs. Contact us today for a competitive quote and sample!


    Contact our sales team today for a quotation or to discuss your project requirements. We are committed to providing high-quality stainless steel round pipes that meet your exact specifications and delivery deadlines.

    Your trusted partner in stainless steel solutions.For further technical information, pricing, or customization, please contact our sales team:

    Tel/WA/Wechat: +86 13225105678

    Email: sales01@duohessplate.com


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