We manufacture and export stainless steel square tubes made from high-quality stainless steel and alloy grades. Precision-cut, corrosion-resistant, and customizable—ideal for structural, architectural, and industrial use.
As a trusted manufacturer of square seamless tubes in China, we specialize in producing high-strength, corrosion-resistant square tubing for applications across architecture, construction, machinery frames, and structural supports. Our square seamless tubes are crafted from premium stainless steel and alloy materials using cold-drawn or hot-rolled processing to ensure dimensional accuracy and exceptional durability.
We offer full customization for size, wall thickness, and surface finish to meet your engineering or design needs. With an experienced technical team and strict quality control, we deliver consistent product quality backed by international standards such as ISO, SGS, TÜV, WTRUST, Lloyd’s Register, and DNV certifications.
| Item | Details |
| Product Name | Stainless Steel Tubes, Stainless Tubes, SS Tubes |
| Standard | GB, AISI, ASTM,ASME,DIN, EN, JIS |
| Available Grades | 200 Series: 201, 202
300 Series: TP304, 304L, 304H, 316, 316L, 316H, 316Ti, 317, 317L, 310S, 310H, 321, 321H, 347, 347H Special Alloys: 904L, S31254 (254SMO) 400 Series: 409, 410S, 416, 420, 430, 439, 440, 444, 446 Duplex 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 | ISO, SGS, TÜV, WTRUST, DNV, LR etc. |
| Application | construction, architecture, railings, furniture, automotive components, industrial equipment, heat exchangers, and marine applications. 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 stainless steel square tubes are primarily available in hollow square form, offering precise outer dimensions and smooth internal surfaces. We provide custom sizes, ranging from small-section square tubes for mechanical parts to large square tubing for load-bearing applications. Surface finishes include polished, pickled, satin-brushed, and mill finishes. Tube ends can be plain, beveled, or machined as per your requirements.
We are a trusted manufacturer and supplier of 202 stainless steel tubes, offering custom sizes, durable finishes, and excellent high-temperature resistance. Ideal for handrails, decorative structures, and industrial use.
High-performance 2507 super duplex stainless steel tube with excellent corrosion resistance, high strength, and low thermal expansion. Ideal for seawater and chemical processing. OEM customization available from certified Chinese factory.
High-performance 321 stainless steel tubes from China wholesale manufacturer. Titanium-stabilized alloy ideal for high-temperature and corrosion-resistant applications. Available in various shapes and custom specifications.
Stainless steel square tubes are versatile and widely used across industries such as construction, architecture, furniture manufacturing, mechanical engineering, and automotive components. They are ideal for structural supports, railings, decorative designs, and load-bearing applications due to their strength and corrosion resistance.
We offer a full range of customized sizes for stainless steel square tubes. From small-section tubes for mechanical parts to larger sections for structural and architectural purposes, we provide flexibility in dimensions and wall thicknesses. The tubes can be supplied in various lengths, typically from 1m to 6m, or customized based on project requirements.
Our stainless steel square tubes are available in a variety of surface finishes, including polished, pickled, satin-brushed, and mill finishes. These finishes enhance corrosion resistance and provide the aesthetic quality needed for interior and exterior applications, handrails, and furniture.
Yes, we offer both welded and seamless stainless steel square tubes, giving you the flexibility to choose the best product for your application. Welded square tubes are suitable for less demanding mechanical applications, while seamless square tubes are ideal for applications requiring higher pressure tolerance and uniformity.
Lead time depends on the order size and customization. For standard sizes, delivery can be made within 7–15 days. We offer flexible MOQ for stocked items.
Absolutely! We provide full customization for both dimensions and surface finishes to meet your specific engineering and design needs. Whether you require custom wall thicknesses, specific lengths, or a particular finish such as mirror polish, we can manufacture square stainless steel tubes tailored to your specifications.
Yes, all our stainless steel square tubes come with Mill Test Certificates (MTC) and are compliant with international standards such as ISO, ASTM, and EN. We also offer additional certifications like SGS, TUV, and BV to ensure product quality and traceability.
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