Stainless Steel Rectangular Tubes

Stainless steel rectangular tubes are hollow, rectangular-shaped sections made from stainless steel. They are produced by cold or hot rolling stainless steel strips, followed by forming the strips into the desired rectangular shape and welding the seams. The tubes are available in various sizes, wall thicknesses, and grades to suit different applications.


Length:6000-25000mm, etcSurface:2B, 2D, BA, NO.1, NO.4, NO.8, 8K, Pickling, Bright, Mirror, Checkered, Embossed, Hair line, Sand blast, Brush, etching, etc
Diameter:3mm–1000mm, etcProduction Process:Cold Drawn, Cold Rolled, Bright Anneal, etc
Thickness:0.5-40mmSurface Treatment:Standard export package, suit for all kinds of transport, or as required.
Export Packing:Waterproof Paper, Steel Strip Packed and other Standard Export Seaworthy Package, or customized packageLoading Port:Pickled,Passivation,Inside & Outside Mechanical Polishing, BA, Electropolishing (EP)
Heat Treatment Condition:Solution Annealing and water rapid quenched, Bright Annealing,Stess Relieving Heat Treatment for U tubesTrade Terms:FOB, CNF,CIF
Grade:201, 202, 304, 304L, 309, 309S, 310S, 316,316L, 316Ti, 317L, 321, 347H, 409, 409L, 410, 410S, 420(420J1,420J2), 430, 436, 439, 441, 444, 446, 1.4301, 1.4307, 1.4541, 1.4401, 1.4404 ,1.4571, 1.4438, 1.4539, 1.4547, 1.4529, 1.4562, 1.4410, 1.4878, 1.4845, 1.4828, 1.4876, 2.4858, 2.4819
Advantage:1. high quality surface, clean finished; 2. corrosion & oxidation resistance, more durable; 3. high ductility and good toughness; 4. high strength and to deform; 5. the use to diversity
Container Size:20ft GP: 5898mm(Length)x2352mm(Width)x2393mm(High); 40ft GP: 12032mm(Length)x2352mm(Width)x2393mm(High); 40ft HC: 12032mm(Length)x2352mm(Width)x2698mm(High)

Typical Chemistry:

The chemical composition of stainless steel rectangular tubes varies depending on the grade. Common grades and their compositions include:

  • Austenitic Stainless Steels (e.g., 304, 316):

    • Iron (Fe): Balance
    • Chromium (Cr): 16-18% (304), 16-18% (316)
    • Nickel (Ni): 8-10.5% (304), 10-14% (316)
    • Manganese (Mn): Up to 2%
    • Silicon (Si): Up to 1%
    • Carbon (C): 0.08% max (304), 0.08% max (316)
    • Molybdenum (Mo) (in 316): 2-3%
  • Ferritic Stainless Steels (e.g., 430):

    • Iron (Fe): Balance
    • Chromium (Cr): 16-18%
    • Carbon (C): 0.12% max
    • Nickel (Ni): Up to 0.75%
    • Manganese (Mn): Up to 1%

Physical Properties:

The physical properties of stainless steel rectangular tubes depend on the grade and processing. Typical properties include:

  • Density: Approximately 7.8 g/cm³
  • Tensile Strength:
    • Austenitic: 520-750 MPa
    • Ferritic: 450-600 MPa
  • Yield Strength:
    • Austenitic: 210-450 MPa
    • Ferritic: 280-380 MPa
  • Elongation:
    • Austenitic: 40-60%
    • Ferritic: 20-30%
  • Hardness:
    • Varies by grade and condition (e.g., annealed, cold worked)
  • Corrosion Resistance: Excellent, especially in austenitic grades like 304 and 316
  • Thermal Conductivity: Lower than carbon steel
  • Magnetic Properties: Non-magnetic (austenitic), magnetic (ferritic and martensitic)


Key features of stainless steel rectangular tubes include:

  • Corrosion Resistance: Exceptional resistance to rust and corrosion, making them ideal for harsh environments and corrosive media.
  • Strength and Durability: High tensile and yield strength provide excellent structural integrity, ensuring long service life.
  • Heat Resistance: Good performance at high temperatures, particularly in grades like 304 and 316.
  • Hygiene: Easy to clean and maintain, making them suitable for food, beverage, and medical applications.
  • Aesthetic Appeal: Attractive surface finishes available in various grades and textures.
  • Workability: Excellent formability and weldability, allowing for complex shapes and structures.
  • Recyclability: Environmentally friendly, as stainless steel can be fully recycled.
  • Low Maintenance: Requires minimal upkeep due to its corrosion resistance and durability.
  • Versatility: Suitable for a wide range of applications, from industrial to decorative.


  • Available Grades — 301, 302, 303, 304, 316/316L, etc
  • Available Standards— ASTM, AISI, JIS, ISO, EN, BS, GB,
  • Available Finishes— No.1, 2D, 2B, BA, 3, No.4, No.240, No.320, No.400, HL, No.7, or as your Request
  • Surface— Pickled, Black, Bright, Polishing, Blasting, etc
  • Length(m)— 6m, 8m, 3m , or as your Request

Our Certifications

Packaging and Shipping

1. Wood pallet packing cover with water-proof paper
2. Steel pallet packing cover with water-proof paper
3. Wood box packing
4. Steel pallet packing cover with steel box
5. In bundles with steel strip no extra packing

package and shipment


  • High Precision Dimension: The carbon steel profile has excellent processing technology good molding and easy welding. Thickened material, stable performance, and high hardness, not easy to rust.
  • Low Friction: Low dissipation factor. More durable than most ordinary domestic bearings. Lower operating costs​
  • Life Is Long: High-quality steel through strict quality inspection, quality control layer-by-layer detection, and reliable quality, long service life.
  • Customization: Drawings and samples can be processed and customized. Conventional large-scale spot, non-standard customization.
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