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Stainless Steel Round Bar
Product Overview
Stainless steel bars are versatile, long-length solid products manufactured from stainless steel through hot rolling, forging, or cold drawing processes. As fundamental raw materials for countless industrial applications, stainless steel bars offer exceptional corrosion resistance, mechanical strength, and machinability .
Our stainless steel bars are produced from prime-quality feedstock with strict control over chemical composition and mechanical properties. The inherent chromium content (minimum 10.5%) creates a passive oxide layer on the surface, providing self-healing corrosion protection that regenerates when exposed to oxygen
Diameter Tolerances (ASTM A484)
| Diameter Range | Tolerance | Tolerance |
| (mm) | (Precision Ground) | (Black / Hot Rolled) |
| 3 to 12 | +0.000 / -0.025 mm | +0.4 mm / -0.4 mm |
| 12 to 25 | +0.000 / -0.050 mm | +0.4 mm / -0.4 mm |
| 25 to 50 | +0.000 / -0.064 mm | +0.8 mm / -0.8 mm |
| 50 to 90 | +0.000 / -0.076 mm | +1.2 mm / -1.2 mm |
| > 90 | Enquire | Enquire |
Buyer Advantages & Commercial Considerations
Machining Efficiency: Precision ground or cold-drawn bars reduce machining allowances and cycle times—lowering per-part cost for high-volume production.
Traceability & Compliance: Heat-numbered MTCs and PMI simplify supplier qualification and auditing for regulated industries.
Fit-for-purpose alloy selection: Choose martensitic grades (e.g., 420/440C) for wear/hardness; 17-4PH for high-strength/aging; 316/316L for corrosion resistance; duplex for strength + corrosion balance.
Value-Added Services: Cut-to-length, centerless grinding, turning, straightening, surface polishing, and heat treatment options to deliver ready-to-machine stock.
Supply Reliability: Stock programs, single-heat lots for qualification, and staggered deliveries for production lines reduce supply-chain risk.
Core Product Specifications (Buyer-Oriented)
We offer a full range of standard and custom stainless steel round bars, strictly adhering to global standards to ensure dimensional accuracy, material consistency, and compatibility with your projects. Every specification is designed to minimize your rework costs, streamline installation, and align with your procurement budget.
| Specification | Details | Buyer-Centric Benefit |
| Material Grade | 304, 316L, 304L, 321 (equivalent to ASTM A276, A484, JIS G4303, GB/T 1220) | - 304: Cost-efficient, widely used for general applications (most popular for bulk procurement)- 316L: Molybdenum-added, superior corrosion resistance (saltwater, chemicals) for harsh environments- Global standard grades ensure smooth customs clearance and compatibility with local project requirements |
| Size Range | - Diameter: 6mm – 200mm- Length: 6m, 12m (standard); custom lengths (3m–12m) available- Tolerance: Diameter ±0.05mm, Length ±50mm | - Covers small components (e.g., fasteners, shafts) to large structural parts (e.g., machine cores)- Standard lengths simplify inventory management; custom lengths reduce cutting waste and on-site labor costs- Precise tolerance ensures perfect fitting, avoiding rework and project delays |
| Surface Treatment | 2B (Matte), BA (Mirror), Polished (400#–800#), Pickled & Passivated, Black Oxide | - 2B: Budget-friendly for industrial structural use (no extra decorative cost)- BAPolished: High-gloss finish for decorative, food, or medical applications- Pickled & Passivated: Enhances corrosion resistance for outdoor/chemical use; black oxide for aesthetic industrial parts |
| Mechanical Properties | - Tensile Strength: ≥515MPa- Yield Strength: ≥205MPa- Elongation: ≥40%- Weldable, machinable, grindable, bendable | Easy to process into custom components (cutting, drilling, threading); durable under high load and wear, extending product service life and reducing replacement costs |
| Packing & Logistics | Bundle packing (waterproof paper + steel straps) + wooden pallets; custom laser marking (grade, diameter, batch number) available; FOB/CIF/DAP/EXW terms supported | - Secure packaging prevents scratches, rust, and damage during long-distance ocean shipping- Custom marking simplifies inventory tracking and brand identification- Flexible shipping terms adapt to your logistics budget and delivery timeline |
Primary Applications (Aligned with Buyer Use Cases)
Our stainless steel round bars are trusted by global buyers for their adaptability to diverse project needs.
Below are the key applications, tailored to your industry-specific requirements:
| Industry | Core Use Cases | Buyer Value |
| Mechanical Engineering | Machine shafts, gears, fasteners, bolts, nuts, equipment components | High machinability and durability reduce equipment maintenance costs; precise dimensions ensure seamless assembly |
| Construction & Architecture | Structural supports, handrails, balustrades, decorative components, reinforcement bars | Corrosion resistance and strength meet building safety standards; customizable finishes enhance aesthetic appeal |
| Food & Beverage | Food processing equipment parts, conveyor shafts, mixing blades, storage tank components | Non-toxic, easy-to-clean surfaces comply with FDA/EU food contact regulations; 316L grade resists food acids |
| Chemical & Pharmaceutical | Chemical reactor components, pipeline connectors, pharmaceutical equipment parts | 316L grade resists corrosive chemicals and acids, preventing leaks and ensuring product purity |
| Automotive & Aerospace | Automotive chassis parts, engine components, aerospace fasteners | High strength and wear resistance meet strict industry standards; lightweight design reduces overall product weight |
| Decorative & Furniture | Furniture frames, decorative railings, art installations, display stands | Polished/BA finishes add premium aesthetic value; corrosion resistance ensures long-term appearance |
FAQs (Frequently Asked Questions for Global Buyers)
We’ve compiled the most common questions from international buyers to help you make informed procurement decisions, covering quality, customization, delivery, and compliance:
Q1: What’s the difference between 304 and 316L stainless steel round bars, and how do I choose?
A: 304 is the most cost-effective option for general applications (e.g., construction, machinery) with mild environmental exposure.
316L contains molybdenum, offering 2–3x better corrosion resistance to saltwater, chemicals, and acidic environments—ideal for marine, chemical, or food processing projects.
For standard projects, 304 delivers optimal value; for harsh environments, 316L is recommended. We provide free sample testing to help you validate performance for your specific use case.
Q2: Can you provide custom diameters, lengths, or surface treatments?
A: Yes, we specialize in custom solutions. We can customize: - Diameter: 6mm–200mm (any size in between) - Length: 3m–12m (non-standard lengths available) - Surface treatments: BA mirror, 800# polished, brushed, pickled & passivated, or black oxide. The minimum order quantity (MOQ) for custom orders is 500kg, with a lead time of 20–30 days.
Q3: What quality control measures do you take before shipment?
A: We implement a strict 3-step quality control process:
1. Pre-production: Verify raw material grade and purity via spectral analysis.
2. In-production: Monitor dimensional accuracy and surface finish during manufacturing.
3. Final inspection: Random sampling to check mechanical properties, corrosion resistance, and packaging.
We also offer SGS/BV third-party inspection at your request, providing a detailed report. Unqualified products are replaced immediately at no extra cost.
Q4: What is the lead time for standard and custom orders?
A: - Standard sizes (in stock): 7–12 days from order confirmation.
- Custom orders: 20–30 days (varies by customization complexity). For bulk orders (≥10 tons), we can expedite production to reduce lead time by 3–5 days.
Air freight is available for small sample orders (3–5 days delivery).
Q5: Do you provide certification and test reports for international shipping?
A: Yes. Every order includes:
- ISO 900114001 certification - Material test reports (chemical composition, mechanical properties)
- Corrosion resistance test certificates. We can also assist with industry-specific certifications (e.g., FDA for food contact, CE for Europe) to ensure compliance with local regulations.
Q6: What payment terms and shipping options do you support?
A: Payment Terms: Flexible options for global buyers: TT (30% deposit + 70% before shipment), L/C at sight, D/P, Western Union.
Long-term partners can negotiate favorable terms (e.g., 10% deposit + 90% after receipt).
Shipping: We use waterproof packaging to prevent damage; shipping insurance is available.
We support FOB/CIF/DAP/EXW terms and partner with top carriers for door-to-door or port-to-port delivery.
Q7: Can I get free samples before placing a bulk order?
A: Yes, we provide 1–2 free samples of standard sizes for quality inspection—you only cover the international shipping cost.
Samples can be customized to your required grade, diameter, or surface treatment and shipped within 3–5 business days.
We are committed to providing you with high-quality stainless steel round bars, professional procurement support, and seamless after-sales service. Whether you are a distributor, contractor, or manufacturer, we tailor solutions to match your specific project 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 bars 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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