Stainless Steel Rectangular Tubing

We offer ASTM A554 stainless steel rectangular tubing with a wide range of diameters and sizes, tubing can be in both mill finish and polished finishes for option, stainless steel cover 304, 304L, 316L etc, providing high-strength and corrosion resistance in harsh environment.

Stainless Steel Rectangular Tubing Specification

Type Welded tubing
Form Rectangular
Standard ASTM A554
Grades TP201, TP304, TP216L, TP409L, TP410, TP430
Outside 1/2 X 1 to 2 X 4 inch
Wall thickness 0.03 to 0.375 inch
Application Mechanical purpose

ASTM A554 Rectangular Tubing

Our rectangular Tubing is provided in accordance with ASTM A554 specification, specified rectangular tubing manufacturing process and quality control, material is stainless steel, which is wide used material, the grades include 304, 304L, 316L.

Rectangular Tubing Dimension Tolerances

Largest Specified OD Across Flats,


Wall Thickness across flats, Convexity or Concavity, ±
in. mm in. mm
To 1 ¼ (31.8), incl all 0.015 0.38
Over 1 ¼ to 2 ½ (31.8‐63.5), incl all 0.020 0.51
Over 2 ½ to 5 ½ (63.5‐139.7), incl all 0.030 0.76
Over 5 ½ to 8 (139.7‐203.2), incl all 0.060 1.52

Wall Thickness Tolerances: ± 10% of specified wall thickness.

Rectangular Tubing Applications

Stainless steel rectangular tubing is widely used for fluid conveying pipeline, such as petroleum, natural gas, water, gas, steam, etc.. In addition, the bending and torsional strength of the same, the weight is light, so it is widely used in manufacturing machinery parts and engineering structures, also in decorative, ornamental purpose.

stainless steel rectangular tube
stainless steel rectangular tubing

Stainless Steel Rectangular Tubing Size Chart