Fine Wall Straight Seam Steel Pipe

For structural applications requiring high strength with minimized material usage, the Fine Wall Straight Seam Steel Pipe is engineered to deliver superior performance. This product, also recognized in the industry as a Light Wall Longitudinal Welded Steel Tube, is designed for efficiency and durability. Its precise manufacturing makes it an ideal Slim Wall Straight Seam Welded Pipe, perfect for frameworks and mechanical components where weight savings are critical. We also offer specialized variants like the Low Thickness Longitudinal Welded Tube, which is optimized for cost-effective projects without compromising on structural integrity. For applications demanding the utmost in precision and sleek profiles, our Thin Gauge Longitudinal Seam Welded Pipe provides an excellent solution, ensuring reliable performance in demanding environments.


The defining characteristic of the Fine Wall Straight Seam Steel Pipe is its exceptional balance of lightness and robustness. Produced using high-grade steel coils, the pipe is formed and welded along a single longitudinal seam with advanced, high-frequency induction welding (HFIW) or submerged arc welding (SAW) techniques. This process guarantees a consistent, high-quality weld with excellent metallurgical properties, resulting in a pipe that offers reliable performance under various stress conditions. The Fine Wall Straight Seam Steel Pipe undergoes rigorous non-destructive testing, including ultrasonic and hydrostatic tests, to ensure it meets the highest standards for dimensional accuracy, surface finish, and leak-proof integrity. Available in a wide range of custom sizes and finishes, the Fine Wall Straight Seam Steel Pipe can be tailored to meet the specific requirements of diverse industrial and commercial projects.

Core Specifications of Fine Wall Straight Seam Steel Pipe:

  • Material Grade: ASTM A53 Gr. B, ASTM A500 Gr. B/C, API 5L Gr. B, or equivalent international standards.
  • Manufacturing Process: High-Frequency Induction Welding (HFIW) or Submerged Arc Welding (SAW).
  • Wall Thickness Range: 0.8mm to 4.0mm (Custom thicknesses available).
  • Outer Diameter (OD) Range: 10mm to 406mm (Custom diameters available).
  • Standard Length: 6 meters, 12 meters, or as per customer request.
  • Surface Treatment: Black, Galvanized, Pre-primed, or Varnished.
  • Ends: Plain ends, Beveled ends, or Threaded (upon request).
Outer Diameter (mm) Common Wall Thickness (mm) Approximate Weight per Meter (kg/m) Typical Application
21.3 1.2, 1.5, 2.0 0.59 - 0.95 Furniture, Handrails, Light Structural
33.7 1.5, 2.0, 2.5 1.19 - 1.92 Automotive Parts, Greenhouse Frames
60.3 2.0, 2.5, 3.0 2.87 - 4.24 Mechanical Engineering, Support Columns
114.3 2.5, 3.0, 4.0 6.89 - 10.88 Industrial Racking, Architectural Structures
168.3 3.0, 3.5, 4.0 12.23 - 16.21 Large Framework, Piling Casing

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