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Hemaokang Steel (Shandong) Co., Ltd. is a reliable supplier of high-quality carbon steel products with an annual export value exceeding US$50 million. Our S235JR Carbon Steel Round Rod in diameters from 10mm to 100mm, hot rolled with H9 tolerance, is designed to meet the rigorous demands of structural and mechanical applications. Backed by our ISO9001-certified quality management system, each rod delivers consistent mechanical properties and precise dimensions, ensuring superior performance in your projects.
This product is ideal for use in construction, machinery manufacturing, automotive components, and general engineering. The H9 tolerance guarantees a tight dimensional accuracy, reducing the need for secondary machining and saving you time and cost. Choose Hemaokang Steel for a reliable supply chain and competitive pricing.
Key Features & Technical Specifications
- Material Grade: S235JR (EN 10025-2) – a low-carbon structural steel with good weldability and machinability.
- Diameter Range: 10mm to 100mm – available in increments of 1mm (custom sizes upon request).
- Production Process: Hot rolled, ensuring a fine grain structure and improved mechanical properties.
- Tolerance Class: H9 – precise diameter control with a tolerance of ±0.036mm for 10mm up to ±0.087mm for 100mm (per ISO 286-2).
- Length: Standard 6 meters, or cut-to-length as per your requirements.
- Surface Condition: Black (as rolled) or pickled & oiled (optional).
- Mechanical Properties: Yield strength ≥ 235 MPa, tensile strength 360–510 MPa, elongation ≥ 24% (for thickness ≤ 16mm).
- Chemical Composition: C ≤ 0.17%, Mn ≤ 1.40%, P ≤ 0.045%, S ≤ 0.045%, N ≤ 0.009% (typical).
- Certifications: ISO9001:2015 quality management system.
- Packaging: Bundled with steel straps, wrapped in waterproof paper or as per customer specification.
| Nominal Diameter (mm) | Tolerance Range (mm) |
|---|---|
| 10 – 18 | ±0.036 |
| 18 – 30 | ±0.043 |
| 30 – 50 | ±0.052 |
| 50 – 80 | ±0.062 |
| 80 – 100 | ±0.087 |
Advantages & Customer Benefits
- Cost-Effective: Hot rolled production reduces material waste and processing steps, offering an economical solution for large-scale projects.
- High Precision: H9 tolerance minimizes the need for additional machining, directly improving your production efficiency.
- Wide Sizing Flexibility: From 10mm to 100mm, we can supply various diameters to meet multi-specification requirements.
- Excellent Weldability: S235JR grade is known for its good weldability, making it suitable for welding-intensive structures.
- Consistent Quality: Our ISO9001 certified process ensures uniform chemical composition and mechanical properties throughout each batch.
- Global Logistics: With experienced export teams, we deliver to North America, South America, Europe, Southeast Asia, Africa, and Oceania.
Our round rods are widely used in the production of shafts, pins, bolts, studs, and other turned parts. The combination of S235JR material properties and H9 tolerance makes them especially suitable for applications where a balance between strength, machinability, and dimensional accuracy is required.
Why Choose Hemaokang Steel?
Established in 2025, Hemaokang Steel (Shandong) Co., Ltd. has quickly grown into a prominent player in the steel export industry. With annual export sales between US$50 million and US$100 million, we serve clients across more than 10 global markets. Our team of 51–100 experienced professionals ensures that every order is handled with care, from material sourcing to final delivery. We hold ISO9001 certification, which reflects our commitment to continuous improvement and customer satisfaction.
Our production facility in Liaocheng, Shandong, is equipped with advanced hot rolling lines and precision cutting tools. We maintain strict quality control at every stage—raw material inspection, in-process checks, and final dimensional verification. This ensures that each S235JR carbon steel round rod we ship meets the H9 tolerance standard consistently.
We understand that every project has unique requirements. That’s why we offer customizable lengths, surface treatments (pickling, oiling, painting), and special packaging upon request. Our sales team is ready to provide technical datasheets, mill test certificates, and samples for your evaluation. Contact us today to discuss your steel rod needs—we are confident you will find the perfect balance of quality, price, and service with Hemaokang Steel.
Frequently Asked Questions (FAQ)
1. What is the difference between S235JR and S235JRG2?
S235JR is a standard grade defined in EN 10025-2. S235JRG2 is an older designation (DIN 17100) that is now obsolete. Both refer to similar material properties, but S235JR is the current European standard. Our rods are manufactured to EN 10025-2:2019.
2. Can you supply rods with a diameter larger than 100mm?
Yes, we can produce custom diameters up to 200mm in hot rolled finish. However, the H9 tolerance may not be available for all sizes. Please contact us with your specific requirements to discuss feasibility.
3. What is the typical lead time for an order?
For standard diameters (10–100mm) and lengths, the lead time is usually 15–20 working days after receipt of deposit. Large quantities or special sizes may require 25–30 working days. We can provide a more accurate schedule upon request.
4. Do you provide mill test certificates (MTC) for each batch?
Yes, a mill test certificate (EN 10204 Type 2.2 or 3.1) is available for every shipment at no extra cost. The certificate includes chemical composition and mechanical test results.
5. How are the rods packaged for export?
Standard packaging includes steel strapping, waterproof wrapping, and wooden pallets or steel frames for sea freight. We can also customize packaging per your instructions (e.g., anti-rust coating, shrink wrap).
6. Can I get a sample before placing a bulk order?
Absolutely. We offer free samples for standard diameters; the buyer only pays for shipping. Samples typically weigh 1–2 kg and can be sent via express courier within 3–5 days.
7. Does H9 tolerance mean the rod is exactly round?
H9 tolerance refers to the diameter deviation, not roundness. However, our hot rolling process ensures good roundness (typically within 0.1mm for most sizes). If you require tighter roundness, we can discuss additional machining options.
8. What is the minimum order quantity (MOQ)?
Our MOQ is 1 ton per diameter size. For smaller quantities, please contact us to check availability in our stock warehouse.
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