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Stainless Square Tubing Specifications


T304 Welded

Outside Dimension Tolerances
Largest Specified Outside Dimension Across Flats, in. Wall
Thickness, In.		 +/-, in. Across Flats, Convexity or Concavity incl.
To 1 1/4 incl. all 0.015
Over 1 1/4 to 2 1/2, incl. all 0.020
Over 2 1/2 to 5 1/2, incl. all 0.030
Over 5 1/2 to 8, incl. all 0.060

Maximum Radii of Corners
Wall Thickness Radii of Cornersmax, in.
Over 0.020 to 0.049, incl. 3/32
Over 0.049 to 0.065, incl. 1/8
Over 0.065 to 0.083, incl. 9/64
Over 0.083 to 0.095, incl. 3/16
Over 0.095 to 0.109, incl. 13/64
Over 0.109 to 0.134, incl. 7/32
Over 0.134 to 0.156, incl. 1/4
Over 0.156 to 0.200, incl. 3/8
Over 0.200 to 0.250, incl. 1/2
Over 0.250 to 0.375, incl. 3/4

Twist Tolerances
Largest Size, In. Twist in 3 ft, max, in.
Under 1/2 0.050
1/2 to 1 1/2, incl. 0.075
Over 1 1/2 to 2 1/2, incl. 0.095
Over 2 1/2 to 4, incl. 0.125
Over 4 to 6, incl. 0.250
Over 6 0.375

Squareness of Sides
+/- B = C * 0.006
Where:
B= tolerance for out of square
C= length of longest side

The Straightness tolerance is 0.075 in. in 3ft using a 3ft straightedge and feeler gage.
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