We are a leading exporter of 310S stainless steel bars from China, supplying high-quality round bars with excellent oxidation resistance, weldability, and high-temperature performance.
310S stainless steel bar is the low-carbon version of 310 stainless steel, engineered for improved weldability and minimized carbide precipitation during high-temperature exposure. This makes it highly suitable for use in oxidizing and carburizing environments such as heat treatment equipment, furnace parts, thermal processing lines, and refinery components.
Due to its excellent toughness at both cryogenic and elevated temperatures, 310S is widely applied in the petrochemical, power generation, and industrial furnace industries. As a professional Chinese stainless steel bar exporter, we provide precision manufacturing, international certification, and bulk delivery capabilities to support global projects.
| Item | Details |
| Product Name | Stainless Steel Bar, Stainless Bar, SS Bar |
| Standard | GB, AISI, ASTM,ASME,DIN, EN, JIS |
| Available Grades | 200 Series: 201, 202300 Series: TP304, 304L, 304H, 316, 316L, 316H, 316Ti, 317, 317L, 310S, 310H, 321, 321H, 347, 347HSpecial Alloys: 904L, S31254 (254SMO)400 Series: 409, 410S, 416, 420, 430, 439, 440, 444, 446Duplex and Others: 2205, 2507, S31803, S32205, S32750, S32760, 253MA |
| Process | Hot Rolled, Cold Rolled |
| Sizes | Diameter: 0.1-500mm or customized, Length: 1-12m or customized (according to customer’s request) |
| Surface Treatment | NO.1, 2B, NO.4, BA, HL, Mirror |
| Inspection | SGS, TUV, BV, ABS, LR etc. |
| Application | Oil & Gas, Petroleum, Vessels, Ship Building, Water Treatment and Environmental Protection etc. |
| Finish | Description | Typical Thickness (mm) | Available Widths (mm) |
| 2B | Smooth, reflective grey sheen. Most widely used. | 0.55 | 914, 1219 |
| BA | Bright annealed mirror-like finish. | 0.70 | 914, 1219 |
| DP | Brushed, non-reflective, easy to clean. | 0.90 | 750, 914, 1219 |
| HR | Scaled, hot-rolled finish. | 1.20 | 750–1500 |
| No.1 | Pickled, white surface after hot-rolling. | 1.50 | 914, 1219, 1500 |
| HL | Continuous linear polish finish. | 1.60 | 914, 1219, 1500 |
| No.4 | Polished with 150–180 grit. | 2.00 | 914, 1219, 1500 |
| No.8 | Mirror finish, highly reflective. | 2.50 | 914, 1219, 1500 |
310S stainless steel bars are primarily supplied as round bars, offering excellent strength and thermal resistance. These bars can be manufactured in hot rolled or cold drawn formats with a variety of surface finishes including bright, pickled, black, or polished. For specialized orders, limited production of hexagonal or square bars can be customized, though round remains the most requested and versatile form.
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310S has a lower carbon content, which improves weldability and reduces carbide precipitation, making it better suited for high-temperature welded applications.
Yes, 310S bars maintain excellent toughness and structural integrity down to -450°F (-268°C), making them suitable for cryogenic use.
Absolutely. We offer polished and mirror surface finishes for decorative and structural stainless steel requirements.
Yes, we offer EN 10204 3.1 MTCs, along with ISO 9001 and third-party inspections (SGS, BV, TÜV) upon request.
Standard lengths are 3–6 meters, but we also provide custom cut-to-length bars based on your specifications.
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