High-strength rectangular seamless tubes made from stainless steel and alloy grades. Precision dimensions, corrosion-resistant, and ideal for structural, mechanical, and architectural applications.
As one of the top rectangular seamless tube manufacturers in China, we provide premium-grade seamless tubing solutions designed for structural integrity, corrosion resistance, and high mechanical performance. These tubes are widely used in engineering frameworks, architectural supports, vehicle manufacturing, and heavy-duty machinery.
Our rectangular seamless tubes are produced using hot-rolled or cold-drawn processes to ensure uniform wall thickness, tight tolerances, and smooth surfaces. We offer custom fabrication options including exact size, wall thickness, and surface finish according to your application.
All products comply with international standards such as ASTM, EN, and ISO, and are available in materials like 304/316 stainless steel, duplex 2205, and high-nickel alloys for specialized environments.
| 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 rectangular seamless tubes are precision-engineered with flat surfaces and 90° corners, offering consistent strength and clean aesthetics. Available sizes range from small-section tubing to large structural rectangular pipes. Surface finishes include satin brushed, pickled, mirror polished, or mill finish. Tubes can be supplied with plain ends, beveled ends, or custom cuts for direct fabrication use.
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China-based manufacturer and supplier of 317 stainless steel tubes. Offering superior corrosion resistance, excellent strength, and full customization for marine, pharmaceutical, and architectural industries.
Professional supplier of 316L stainless steel tubes in China. We provide corrosion-resistant, molybdenum-bearing stainless steel tubing with custom sizes and superior performance.
These tubes are ideal for use in structural components, support frameworks, load-bearing assemblies, automotive parts, furniture frames, and decorative installations.
Common grades include 304, 316, 321 stainless steel, duplex 2205, and 904L for corrosive or marine applications. We also support custom alloy requests.
Yes. We can produce according to your exact specifications, including custom width, height, wall thickness, and length, to ensure a perfect fit for your project.
Absolutely. We export to over 30 countries and provide full export packaging, inspection certificates, and third-party testing reports upon request.
Seamless tubes offer superior strength, better internal cleanliness, and higher pressure tolerance, especially important in demanding structural or fluid systems.
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