We supply high-quality large-diameter stainless steel round tubes for industrial use. OEM/ODM customization, seamless or welded, available in 304, 316L, 310S, and other grades. Trusted manufacturer with global delivery.
Our large-diameter stainless steel round tubes are engineered for heavy-duty industrial applications that require strength, corrosion resistance, and long-term durability. As an experienced OEM & ODM manufacturer in China, we specialize in producing custom-size stainless steel round tubes with diameters ranging from 89mm to over 600mm. Our tubes are widely used in industries such as petrochemical, construction, marine, energy, and machinery.
Manufactured using high-grade austenitic, ferritic, or duplex stainless steels (e.g., 304, 316L, 321, 310S, 2205), our large-diameter tubes feature excellent weldability, pressure resistance, and surface finishes (pickled, polished, or brushed). We support full customization including wall thickness, length, end treatments, and surface finish per client specifications.
| Item | Details |
| Product Name | Stainless Steel Pipe, Stainless Pipe, SS Pipe |
| 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 | Thickness: 0.24–3mm, Outer diameter: 8–219mm, Length: 1–6m (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 |
Our large-diameter stainless steel round tubes are available in various steel grades and wall thicknesses for seamless or welded structures. Typical sizes include DN100 to DN600, with customizable lengths and polished or pickled finishes. We also offer tailored solutions for elliptical tubes, square and rectangular alternatives, and heavy-walled pipes for structural use.
Leading supplier of oval and elliptical seamless tubes in stainless steel and alloy materials. Ideal for architecture, automotive, and furniture industries. Custom sizes and finishes available.
We provide high-precision special shape and custom stainless steel tubes including triangle, hexagonal, D-shape, and other non-standard profiles. OEM & ODM customization available with surface treatment, cutting, and packaging options.
We manufacture and export square seamless tubes made from stainless steel and alloy grades. Precision-cut, corrosion-resistant, and customizable—ideal for structural, architectural, and industrial use.
High-strength rectangular seamless tubes made from stainless steel and alloy grades. Precision dimensions, corrosion-resistant, and ideal for structural, mechanical, and architectural applications.
We can manufacture round tubes up to 630mm outer diameter, and special sizes can be developed upon request.
Yes. We produce both seamless and welded tubes based on project requirements, using TIG/ERW/SMAW welding where needed.
These tubes are commonly used in chemical plants, oil & gas pipelines, power generation, shipbuilding, structural supports, and water treatment projects.
Absolutely. We can provide mill-length or cut-to-length options with surface finishes such as 2B, No.1, mirror polish, or brushed.
Our large-diameter tubes are ISO 9001, CE, and SGS certified, and we can provide MTC and third-party inspection reports upon request.
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