Rectangular Carbon steel tube

The Carbon Steel Square Tube is a versatile and durable product that boasts a range of exceptional features. Constructed from high-quality carbon steel, this square tube offers excellent strength and resilience, making it suitable for various applications. Its square shape provides stability and easy alignment, allowing for efficient fabrication and construction. The tube’s smooth surface finish ensures effortless welding, while its corrosion-resistant properties enhance its longevity. With precise dimensions and uniform thickness, the Carbon Steel Square Tube is easy to work with and allows for seamless joining and shaping. It is a reliable choice for structural frameworks, supports, and ornamental applications.


ProductRectangular Carbon steel tube
Thickness10×10, 50×50, 90×90 mm or as customer’s requirements
50×20, 10×30, 60×100 mm or as customer’s requirements
Length1m to 20m or as customer’s request
Zinc coating60g/m²-600g/m²-
GradeSPCC, SPCD, SPCE, ST12-15, DC01-06, Q195A-Q235A, Q195AF-Q235AF, Q295A(B)-Q345A(B)
CertificationsISO 9001
PackingIndustry standard packaging or according to client’s requirement
BrandTISCO, ZPSS, Baosteel, POSCO, LISCO, YUSCO, Ansteel, QPSS, JISCO, HXSCO, Chengde, Yongjin, Tsingshan, Shouyang, HW
PaymentT/T, L/C at sight
Delivery timeUp to order quantity


Carbon Steel Square Pipes exhibit physical properties similar to other carbon steel products, with some variations depending on the dimensions and manufacturing process:

  • Tensile Strength: Typically ranges from 400 MPa to 700 MPa depending on the grade and size.
  • Yield Strength: Generally ranges from 250 MPa to 500 MPa.
  • Elongation: Varies from 20% to 30%, indicating good ductility.
  • Density: Approximately 7.85 g/cm³.
  • Hardness: Depends on the carbon content and heat treatment, typically ranging from 120 HB to 200 HB.


Key features of Rectangular carbon steel Tube  include:

  • Structural Integrity: Provide excellent structural support and stability, making them suitable for load-bearing applications.
  • Versatility: Available in various sizes, wall thicknesses, and lengths to meet diverse application requirements.
  • Weldability: Suitable for welding using various methods, allowing for the fabrication of complex structures and assemblies.
  • Corrosion Resistance: Depending on the alloying elements and surface treatments, carbon steel square pipes can exhibit varying levels of corrosion resistance.
  • Ease of Fabrication: Can be easily cut, drilled, and welded to suit specific project needs, allowing for efficient fabrication and installation.

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.
Scroll to Top