Products

Non-Standard Carbon Steel Tube

When standard round, square, or rectangular tubes fall short for your unique structural, mechanical, or architectural project, non-standard carbon steel tubes provide the critical solution. These bespoke components, engineered to precise specifications, unlock design possibilities where off-the-shelf options cannot. Whether your application demands a Special Shaped Carbon Steel Tube for complex framework integration, a Special Profile Carbon Steel Pipe for specialized fluid conveyance systems, or a completely Custom Shaped Carbon Steel Tube for a one-of-a-kind design, the ability to define the cross-section is paramount. For applications requiring high-strength joins in unconventional forms, an Irregular Carbon Steel Welded Tube offers durability and a perfect fit, eliminating the need for costly and weak field modifications.


The defining characteristic of a Non-Standard Carbon Steel Tube is its departure from conventional geometries. This customization encompasses a vast array of parameters, all tailored to the specific load-bearing, spatial, and functional requirements of the final application. Key product parameters that define our Non-Standard Carbon Steel Tube offerings include:

  • Material Grade: Available in a range of carbon steel grades (e.g., ASTM A36, A500, A513, 1020, 1045) to meet varying strength, weldability, and machinability needs.
  • Cross-Sectional Geometry: Beyond standard shapes, we produce tubes with oval, triangular, hexagonal, D-shaped, trapezoidal, and fully custom asymmetric profiles.
  • Manufacturing Process: Primarily fabricated through advanced welding processes (ERW, SAW) from tailored steel coils or plates, ensuring consistency in the unique shape.
  • Dimensional Tolerance: Engineered to strict tolerances on all critical dimensions, including wall thickness, straightness, and profile accuracy, as per customer drawings.
  • Surface Finish: Options include mill finish, pickled and oiled, galvanized, or pre-primed, depending on environmental exposure and aesthetic requirements.
  • End Finishing: Tubes can be supplied with square-cut ends, beveled for welding, mitered, or with specially formed ends for immediate assembly.

To further illustrate the technical specifications, the following table outlines common parameters for our Non-Standard Carbon Steel Tube products:

Parameter Specification Range / Options Standards / Notes
Common Steel Grades ASTM A36, A500 Grade B/C, A513, SAE 1020, 1045 Other grades available upon request
Typical Wall Thickness 0.5 mm to 12.7 mm (0.020" to 0.500") Dependent on profile size and material grade
Profile Dimensions (Major) Up to 500 mm in width/height Limited by mill capacity; consult for large sizes
Length Standard: 6m (20ft). Custom lengths up to 18m (59ft) possible. Tolerance on cut length typically ±1.5mm
Primary Manufacturing Method Electric Resistance Welding (ERW), Submerged Arc Welding (SAW) Ensures strong, consistent weld seam along custom shape
Dimensional Tolerance Complies with ASTM A500 or customer-specified drawing tolerances Typical tolerance on wall ±10%, on profile dimensions ±0.5mm to ±2mm
Available Surface Treatments Black (mill), Galvanized (ASTM A123), Painted/Primed, Pickled & Oiled Galvanizing suitable for corrosion resistance in standard atmospheres
Common Applications Architectural structures, custom machinery frames, conveyor systems, automotive roll cages, specialized railings. Ideal where structural integrity and precise fit are non-negotiable

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