English 
Español 
Français 
Deutsch 
Português (Brasil) 
Русский 
العربية 
Stainless Steel Rectangular Tube Supplier and Manufacturer
China
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 Ton
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
Product details
Technical Specifications of Stainless Steel Rectangular Tube
| Property | Parameter | Description |
|---|---|---|
| Product Name | Stainless Steel Rectangular Tube | Hollow rectangular section tube made of stainless steel alloy |
| Material Grade | 304 / 304L / 316 / 316L / 321 / 310S | 304 ≈ EN 1.4301 / JIS SUS304; 316L ≈ EN 1.4404 / JIS SUS316L |
| Standard Compliance | ASTM A554 / ASTM A269 / EN 10296-2 / JIS G3446 / GB/T 12770 | Covers welded and seamless stainless steel mechanical tubing |
| Chemical Composition (304) | C ≤0.08%, Mn ≤2.0%, Si ≤1.0%, Cr 18.0–20.0%, Ni 8.0–10.5%, P ≤0.045%, S ≤0.030% | Austenitic grade; 316/316L adds Mo 2.0–3.0% for enhanced corrosion resistance |
| Tensile Strength | ≥515 MPa (304); ≥485 MPa (316L) | Per ASTM A554 / EN 10296-2 requirements |
| Yield Strength | ≥205 MPa (304); ≥170 MPa (316L) | 0.2% proof stress; values per respective material standards |
| Elongation | ≥35% (304); ≥40% (316L) | Measured on 50 mm gauge length per ASTM A370 |
| Hardness | ≤201 HB / ≤92 HRB (304) | Brinell or Rockwell B scale; annealed condition |
| Dimension Range | Width: 10–400 mm; Height: 10–200 mm; Wall Thickness: 0.5–20 mm; Length: up to 12,000 mm | Custom sizes available; tolerances per ASTM A554 or EN 10296-2 |
| Wall Thickness Tolerance | ±10% (welded); ±12.5% (seamless) | Per ASTM A554 Table 1; tighter tolerances available on request |
| Surface Finish | No.1 / 2B / BA / No.4 / No.8 / Brushed / Polished / Pickled & Passivated | 2B is standard mill finish; BA and No.8 for decorative applications |
| Manufacturing Process | Welded (ERW / TIG) or Seamless; Cold-drawn or Hot-rolled | Welded tubes per ASTM A554; seamless per ASTM A269 / EN 10296-2 |
| Application | Architecture, handrails, structural frames, food processing equipment, chemical industry, marine fittings, furniture | 316/316L preferred for marine and chemical environments |
| Certification | ISO 9001:2015, PED 2014/68/EU, Mill Test Certificate EN 10204 3.1 / 3.2 | Third-party inspection (SGS, BV, TÜV) available upon request |
| Packaging | Bundled with steel straps; plastic end caps; wooden pallet or wooden case | Export seaworthy packaging; moisture-proof wrapping available |
| MOQ | 1 Ton (standard sizes); 500 kg (custom sizes) | Mixed grades and sizes accepted to meet MOQ |
Stainless Steel Rectangular Tube
Stainless steel rectangular tube is a versatile and high-performance structural material widely used across construction, industrial, and architectural sectors. With its precise geometric profile, superior corrosion resistance, and excellent mechanical strength, this product has become a preferred choice for engineers, fabricators, and procurement professionals around the world. As a trusted supplier and manufacturer, we offer a comprehensive range of rectangular tubing solutions tailored to meet the most demanding project requirements.
What Is a Stainless Steel Rectangular Tube?
A stainless steel rectangular tube is a hollow section with a rectangular cross-section manufactured from stainless steel alloys. Unlike round or square tubing, the rectangular profile provides distinct advantages in load-bearing applications where directional strength is required. The flat surfaces also make it easier to weld, cut, and fabricate into complex assemblies. These tubes are produced through hot rolling, cold drawing, or electric resistance welding (ERW) processes, ensuring consistent wall thickness and dimensional accuracy.
Key Specifications and Grades
Our stainless steel rectangular tubes are available in a wide variety of grades, dimensions, and surface finishes to accommodate diverse application needs:
- Common Grades: 304, 304L, 316, 316L, 321, 310S, 430, and duplex grades such as 2205
- Size Range: Width from 10mm to 400mm, height from 10mm to 300mm, wall thickness from 0.5mm to 20mm
- Length: Standard lengths of 6m and 12m, or customized cut-to-length service
- Surface Finish: No.1, 2B, BA, No.4 (brushed), No.8 (mirror), and pickled finishes
- Standards: ASTM A554, ASTM A312, EN 10296-2, JIS G3446, and GB/T 12770
Grade 304 is the most widely specified option due to its excellent corrosion resistance and weldability. Grade 316 and 316L are recommended for marine environments or applications involving chloride exposure, offering enhanced resistance to pitting and crevice corrosion.
Performance Advantages of Stainless Steel Rectangular Tubing
Choosing the right structural material is critical to the longevity and safety of any project. Stainless steel rectangular tube offers several outstanding performance benefits:
- Corrosion Resistance: The chromium content forms a passive oxide layer that protects the surface from rust, oxidation, and chemical attack, even in harsh environments.
- High Strength-to-Weight Ratio: Provides excellent structural integrity without adding excessive weight, reducing material costs and simplifying installation.
- Hygienic Properties: Non-porous surface resists bacterial growth, making it ideal for food processing and pharmaceutical applications.
- Temperature Resistance: Maintains mechanical properties across a broad temperature range, from cryogenic conditions to elevated heat environments.
- Aesthetic Appeal: Available in polished and brushed finishes, it delivers a clean, modern appearance suitable for architectural and decorative uses.
- Long Service Life: Minimal maintenance requirements and exceptional durability result in a lower total cost of ownership over the product lifecycle.
Applications Across Industries
The stainless steel rectangular tube finds extensive application across a broad spectrum of industries due to its adaptability and reliability:
- Construction and Architecture: Curtain walls, handrails, balustrades, structural frames, and facade systems
- Industrial Manufacturing: Machine frames, conveyor supports, equipment enclosures, and automation structures
- Food and Beverage: Processing equipment, storage racks, and sanitary piping frameworks
- Oil and Gas: Offshore platforms, chemical plant structures, and pipeline supports
- Transportation: Railway carriages, truck bodies, and shipbuilding components
- Furniture and Interior Design: Modern furniture frames, shelving units, and decorative installations
Why Choose Us as Your Stainless Steel Rectangular Tube Supplier?
As an experienced manufacturer and supplier of stainless steel rectangular tube products, we are committed to delivering consistent quality, competitive pricing, and reliable on-time delivery. Our production facilities are equipped with advanced rolling and drawing equipment, and each batch undergoes rigorous quality inspection including dimensional checks, mechanical testing, and surface evaluation. We support OEM orders, custom sizing, and bulk procurement with flexible logistics solutions to destinations worldwide. Whether you require standard stock items or specialized profiles, our technical team is ready to provide professional consultation and support throughout your procurement process.
