• In accordance to ASTM/ASME A/SA-249, A-269
  • Tubing sizes are identified by their actual outside diameters “O.D.”, plus or minus applicable tolerances
  • Normally furnished as Average Wall “AW”
  • All tubes are 20 feet in length but that can vary slightly due to the milling process.
  • QTY 1 = 20 FT. 

Additional Information

The information presented above are Typical or average values and are not a guarantee of maximum or minimum values.

Use Custom Product to make a request for dimensions not shown.


Working Pressures for T304 & T316, A269 tubing between -20°F and 100°F.

The A.S.M.E. code suggests a safety factor of four. E,G, 1/4″ O.D. x .035 = 5250 P.S.I.

For Higher temperatures multiply working pressure by:

  300°F 500°F 1000°F
T304 .828 .774 .665
T316 .900 .853 .746


Barlow’s Formula for Theoretical Bursting Pressure

P = 2 (S * T) / O.D.
P – Bursting Pressure (P.S.I.) T – Wall Thickness (Inches)
O.D. – Outside Diameter (Inches) S – Tensile Strength

Typical Tensile Strengths (S)

Stainless Steel (300 Series) S = 70000 to 75000 psi
Chrome Moly (P1 to P5) S = 55000 psi
Chrome Moly (Balance) S = 60000 psi
Alloy 20 S = 80000 psi
904L S = 70000 psi
Duplex s = 90000 psi

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