A554 Welded Ornamental Tube

DONGSHANG Stainless produce A554 welded ornamental tube in various shapes, containing round tube, square tube, rectangular tube and oval tube, A554 specification covers welded Austenitic, Ferritic, and Austenitic-Ferritic duplex stainless steel mechanical tubing intended for use in ornamental, structural, exhaust, and other applications.

Basic specification
  • Type: welded tubes
  • Grades: MT304 / 304L, MT316 / MT316L, MT321, MT430, TMT310S
  • Finishing: Annealed, as welded, polishing
  • Outside diameter: 12.7 – 406.4 mm
  • Thickness: 0.5 – 6.35 mm
  • Forms: round tube, square tube, rectangular tube, elliptic Tube

A554 welded tube

We offer wide range sizes for A5554 welded ornamental tube, including round tube, square tube, rectangular tube and special form dimensions, TIG automatic welding process from stainless steel materials, welding control as standard, bead removed or not removed as request.

A554 welded stainless tube dimensional tolerance

For round tubing, outside diameter tolerance is different Variation with bead removed and not removed, the requirement should be stated by clients, for square and rectangular welded stainless steel mechanical tubing, outside dimension tolerances are different compared to round tubing, wall thickness tolerance is over and under 10 % of specified wall thickness.

Round Tubing Outside Dimention Tolerances

OD Size, in.(mm) Wall Thickness OD,±
in. mm in. mm
Under ½ (12.7) 0.020 ‐ 0.049 0.51 ‐ 1.24 0.004 0.10
½ ‐ 1 (12.7‐25.4) 0.020 ‐ 0.065 0.51 ‐ 1.65 0.005 0.13
½ ‐ 1 (12.7‐25.4) over 0.065 ‐ 0.134 over 1.65 ‐ 3.40 0.010 0.25
Over 1 ‐ 1 ½ (25.4‐38.1), incl 0.025 ‐ 0.065 0.64 ‐ 1.65 0.008 0.20
Over 1 ‐ 1 ½ (25.4‐38.1), incl over 0.065 ‐ 0.134 over 1.65 ‐ 3.40 0.010 0.25
Over 1 ½ ‐ 2 (38.1‐50.8), incl 0.025 ‐ 0.049 0.64 ‐ 1.24 0.010 0.25
Over 1 ½ ‐ 2 (38.1‐50.8), incl over 0.049 ‐ 0.083 over 1.24 ‐ 2.11 0.011 0.28
Over 1 ½ ‐ 2 (38.1‐50.8), incl over 0.083 ‐ 0.149 over 2.11 ‐ 3.78 0.012 0.30
Over 2 ‐ 2 ½ (50.8‐63.5), incl 0.032 ‐ 0.065 0.81 ‐ 1.65 0.012 0.30
Over 2 ‐ 2 ½ (50.8‐63.5), incl over 0.065 ‐ 0.109 over 1.65 ‐2.77 0.013 0.33
Over 2 ‐ 2 ½ (50.8‐63.5), incl over 0.109 ‐ 0.165 over 2.77 ‐ 4.19 0.014 0.36
Over 2 ½ ‐ 3 ½ (63.5‐88.9), incl 0.032 ‐ 0.165 0.81 ‐ 4.19 0.014 0.36
Over 2 ½ ‐ 3 ½ (63.5‐88.9), incl over 0.165 over 4.19 0.020 0.51
Over 3 ½ ‐ 5 (88.9‐127.0), incl 0.035 ‐ 0.165 0.89 ‐ 4.19 0.020 0.51
Over 3 ½ ‐ 5 (88.9‐127.0), incl over 0.165 over 4.19 0.025 0.64
Over 5 ‐ 7 ½ (127.0‐190.5), incl 0.049 ‐0.250 1.24 ‐ 6.35 0.025 0.64
Over 5 ‐ 7 ½ (127.0‐190.5), incl over 0.250 over 6.35 0.030 0.76
Over 7 ½ ‐ 16 (190.5‐406.4), incl all all 0.00125 in./in. or mm/mm of cicumference

Square & Rectangular Outside Dimension Tolerances

Largest Specified OD Across Flats,

in.(mm)

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.

A554 Welded Ornamental Tube Application

A554 welded ornamental tube is produced with as welded, annealed and polishing finishing, using in mechanical structure, ornamental and decorative purpose, such as handrail tube and auto exhaust tube, A554 welded tube also applied in corrosion environment.,

A554 Welded Ornamental Tubestainless steel square tubing
stainless steel rectangular tubing