tubo quadrado de aço inoxidável

Stainless Steel Square Tube&Pipe

1. What is a Stainless Steel Square Pipe?

A stainless steel square pipe is a hollow square-section tube made from stainless steel. Due to its unique geometric shape and excellent performance, it is widely used in architectural decoration, furniture manufacturing, mechanical structures, and industrial engineering. Compared to round pipes, square pipes offer higher moment of inertia and section modulus when subjected to bending moments in specific directions, demonstrating superior bending resistance. Its main parameters include material grade, side length, wall thickness, and length.

2. Classification of Stainless Steel Square Pipes

• By Application:
  • Decorative stainless steel square pipes
  • Structural stainless steel square pipes
  • Industrial stainless steel square pipes
• By Manufacturing Process:
  • Seamless Square Pipes: Produced through hot rolling, extrusion, or cold drawing processes, offering high integrity and pressure-bearing capacity.
  • Welded Square Pipes: Formed by shaping stainless steel coils or plates and then welding (typically TIG welding), featuring high production efficiency and relatively lower cost.
• By Material Grade:
  • 201 Stainless Steel Square Pipe
  • 304 Stainless Steel Square Pipe
  • 316L Stainless Steel Square Pipe Different materials correspond to varying levels of corrosion resistance and suitability for different environments.

3. Specifications of Stainless Steel Square Pipes

• Material Grades: Common grades include 201, 304, and 316L austenitic stainless steels. 201 offers economic practicality, 304 provides excellent overall performance, and 316L boasts superior corrosion resistance.
• Side Lengths: 10×10, 15×15, 19×19, 20×20, 22×22, 25×25, 30×30, 38×38, 40×40, 50×50, 60×60, 80×80, 100×100 mm, etc..
• Wall Thickness: 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0 mm, etc..
• Length: Standard length is typically 6 meters per piece, with non-standard lengths available upon customer request.
• Surface Finish/Color: Common finishes include 8K mirror, escovado (snow sand, dry sand, oil sand, etc.), and sandblasted. Through vacuum titanium plating, various decorative colors such as titanium gold, Rose Gold, champagne gold, black titanium, and zirconium gold are available to meet diverse aesthetic requirements.

4. How is a Stainless Steel Square Pipe Manufactured?

• Welded Square Pipe Production Process: Raw Material (Coil/Plate) → Uncoiling → Leveling → Forming (Roll Forming into Square) → TIG Welding → Cooling → Weld Seam Smoothing → Cut to Length → Straightening → Surface Treatment (Brushing, Polishing, etc.) → Inspection → Packaging → Shipment
• Seamless Square Pipe Production Process: Round Billet → Heating → Piercing → Hot Rolling (or Extrusion) into Round Tube → Reheating → Sizing (Extrusion or Rolling through Dies) into Square → Cooling → Straightening → Cutting → Surface Treatment → Inspection → Packaging → Warehousing (Note: Seamless square pipes are relatively rare and are often processed from round pipes or directly extruded.)

5. Key Features of Stainless Steel Square Pipes

• Structural Advantages: The square cross-section provides better bending resistance compared to round pipes of the same weight, making it ideal for frames, supports, and applications requiring resistance to bending moments.
• Excellent Aesthetics: Sharp edges and clean lines offer a modern, sleek appearance, widely used in building facades, interior partitions, door and window frames, and furniture legs.
• Ease of Fabrication: Flat surfaces facilitate welding, connection, and installation, especially suitable for modular design and assembly.
• Material Properties: Inherits the benefits of stainless steel, including corrosion resistance, high-temperature resistance, anti-rust properties, long service life, and easy cleaning and maintenance.

6. Applications of Stainless Steel Square Pipes Stainless steel square pipes are a vital material in construction and industry, with extensive applications:

• Architectural Decoration: Curtain wall frameworks, door and window frames, staircase handrail posts, balcony railings, interior partitions, elevator trims, etc..
• Furniture Manufacturing: Table and chair frames, coffee table legs, bookshelves, display racks, storage shelves, etc..
• Industrial Use: Machinery frames, conveyor line supports, workbenches, protective barriers, chemical pipeline supports, etc..
• Municipal Engineering: Public facilities (e.g., bus shelters, bicycle racks), landscape features, fences, etc..