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Help Center316L Stainless Steel Round Bar 20mm Diameter Cold Drawn Precision Rod 0.01mm Tolerance
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Hemaokang Steel (Shandong) Co., Ltd., established in 2025, is a professional manufacturer and exporter of high-quality stainless steel products. Our 316L Stainless Steel Round Bar with 20mm diameter, cold drawn to precision, achieves a tight tolerance of ±0.01mm. This product is designed for applications where dimensional accuracy and corrosion resistance are critical, such as precision shafts, medical devices, and automotive components. With an annual export value of US$50-100 million, we serve global markets including North America, Europe, and Southeast Asia, backed by ISO9001 certification.
Product Features & Specifications
- Superior Material: 316L stainless steel offers excellent resistance to pitting and crevice corrosion in chloride environments, making it ideal for marine and chemical processing applications.
- Cold Drawn Process: The cold drawing process improves mechanical properties, surface finish, and dimensional consistency, resulting in a bright, smooth surface and enhanced strength.
- 20mm Diameter with ±0.01mm Tolerance: Our precision control ensures every bar meets tight tolerances, reducing the need for secondary machining and saving production time.
- Custom Lengths Available: Standard lengths are 3m, 4m, and 6m, but we can cut to your specific requirements (up to 6m).
- Versatile Use: Suitable for CNC machining, turning, milling, and grinding. Commonly used in precision instruments, hydraulic components, and food processing equipment.
| Parameter | Value |
| Material Grade | 316L (UNS S31603) |
| Diameter | 20mm |
| Tolerance | ±0.01mm (Grade h7) |
| Surface Finish | Bright, Cold Drawn (Ra ≤ 0.8μm) |
| Tensile Strength | ≥ 485 MPa |
| Yield Strength | ≥ 170 MPa |
| Elongation | ≥ 40% |
| Hardness | ≤ 217 HBW |
| Standard | ASTM A276, AISI 316L |
Key Advantages for Your Business
- Reduced Machining Costs: The high precision (±0.01mm) and excellent surface finish minimize the need for additional grinding or turning, lowering your production expenses.
- Consistent Quality: Our ISO9001 certified processes ensure every bar is uniform in dimensions and material properties, batch after batch.
- Corrosion Resistance: 316L’s low carbon content prevents sensitization during welding, making it reliable for harsh environments.
- Global Logistics: With annual export value exceeding US$50 million, we have extensive experience in international shipping and can deliver to your port efficiently.
- Technical Support: Our team of engineers can provide material certificates, inspection reports, and advice on machining parameters.
Trust & Reliability
At Hemaokang Steel, we have a dedicated team of 51-100 professionals and a state-of-the-art facility in Liaocheng, Shandong. Our products are exported to over 10 major markets worldwide, including North America, South America, Europe, Asia, and Africa. We have obtained ISO9001:2015 certification, which reflects our commitment to quality management. With a strong supply chain and flexible production capacity, we can meet both small sample orders and large container shipments. Choose Hemaokang Steel for your precision stainless steel needs – we are your reliable partner in the global steel industry.
Frequently Asked Questions (FAQ)
Q1: What is the difference between 316L and 316 stainless steel?
A: 316L has a lower carbon content (≤0.03%) than 316, which reduces the risk of carbide precipitation during welding, making it more suitable for welded applications and improved corrosion resistance.
Q2: Can you provide a material test certificate (MTC)?
A: Yes, we can issue a Mill Test Certificate (MTC) or EN 10204 3.1 certificate upon request, confirming chemical composition and mechanical properties.
Q3: What is the typical lead time for 20mm diameter round bars?
A: For standard sizes in stock, lead time is 7-10 days. For custom lengths or large quantities, typically 15-20 days depending on order volume.
Q4: Do you offer sample orders?
A: Yes, we accept sample orders (e.g., 1 meter length) for evaluation. Please contact our sales team for pricing.
Q5: How do you ensure the tolerance of ±0.01mm?
A: We use precision cold drawing process and 100% dimensional inspection with calibrated micrometers. Each batch is sampled and tested to ensure compliance.
Q6: Can the bar be supplied in a straightened and cut condition?
A: Yes, we offer straightening, cutting to length, and chamfering services as per your requirements.
Q7: What packaging do you provide for export?
A: Bars are bundled with plastic caps, wrapped in waterproof paper, and packed in wooden crates or steel pallets for safe transportation.
Q8: Is this product suitable for food contact applications?
A: Yes, 316L stainless steel is widely used in food processing equipment due to its corrosion resistance and non-reactivity with food substances.
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