Seamless Metric
- In accordance to ASTM/ASME A/SA-213, 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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