TUBE OD TOLERANCE LIMIT
Metric Tubing
| Tube OD in mm | Tolerance in mm |
| 3 | ± 0.076 |
| 6 | ± 0.127 |
| 8 | ± 0.127 |
| 10 | ± 0.127 |
| 12 | ± 0.127 |
| 14 | ± 0.127 |
| 16 | ± 0.127 |
| 18 | ± 0.127 |
| 20 | ± 0.127 |
| 22 | ± 0.127 |
| 25 | ± 0.127 |
Fractional Tubing
| Tube OD in inch | Tolerance in inch |
| 1/8 | ± 0.003 |
| 3/16 | ± 0.005 |
| 1/4 | ± 0.005 |
| 5/16 | ± 0.005 |
| 3/8 | ± 0.005 |
| 1/2 | ± 0.005 |
| 5/8 | ± 0.005 |
| 3/4 | ± 0.005 |
| 7/8 | ± 0.005 |
| 1 | ± 0.005 |
TUBING DATA
Allowable working Pressure for wall thickness
Stainless Steel Tubing (SS 304 / 304 L and SS 316 / 316 L) – Inch Size
| Tube OD in inch | Wall Thickness of Tube in Inch | Working Pressure for seamless Tubing in psi | ||||||||||||
| 0.010 | 0.012 | 0.014 | 0.016 | 0.020 | 0.028 | 0.035 | 0.049 | 0.065 | 0.083 | 0.095 | 0.109 | 0.120 | ||
| 1/16 | 5600 | 6860 | 8150 | 9480 | 11890 | |||||||||
| 1/8 | 8550 | 10750 | ||||||||||||
| 3/16 | 5500 | 7100 | 10150 | |||||||||||
| 1/4 | 4100 | 5200 | 7600 | 10150 | ||||||||||
| 5/16 | 4100 | 5900 | 7900 | |||||||||||
| 3/8 | 3350 | 4850 | 6500 | |||||||||||
| 1/2 | 2650 | 3750 | 5150 | 6600 | ||||||||||
| 5/8 | 2950 | 4050 | 5250 | 5950 | ||||||||||
| 3/4 | 2450 | 3350 | 4250 | 4950 | 5650 | |||||||||
| 7/8 | 2050 | 2850 | 3650 | 4250 | 4800 | |||||||||
| 1 | 2400 | 3100 | 3600 | 4200 | 4700 | |||||||||
Table-6: Allowable working Pressure for wall thickness
Stainless Steel Tubing (SS 304 / 304 L and SS 316 / 316 L) – Metric Size
| Tube OD in mm | Wall Thickness of Tube in mm | Working Pressure for Seamless Tubing in bar | |||||||||
| 0.8 | 1.0 | 1.2 | 1.5 | 1.8 | 2.0 | 2.2 | 2.5 | 2.8 | 3.0 | ||
| 3 | 720 | ||||||||||
| 6 | 330 | 420 | 540 | 680 | |||||||
| 8 | 310 | 380 | 490 | ||||||||
| 10 | 240 | 300 | 380 | 470 | |||||||
| 12 | 200 | 240 | 330 | 410 | 470 | ||||||
| 14 | 180 | 220 | 280 | 340 | 390 | 430 | |||||
| 15 | 170 | 200 | 260 | 320 | 360 | 400 | |||||
| 16 | 190 | 240 | 300 | 330 | 370 | 430 | |||||
| 18 | 170 | 210 | 260 | 290 | 320 | 370 | |||||
| 20 | 140 | 180 | 230 | 260 | 290 | 330 | 380 | ||||
| 22 | 120 | 160 | 210 | 240 | 260 | 300 | 320 | ||||
| 25 | 150 | 180 | 200 | 230 | 260 | 290 | 320 | ||||
WARNING
The data given here are not for design purpose but for reference only. The system designer and the user have the sole responsibility to select product suitable for
their intended application requirements and ensure the proper installation, operation and maintenance of product. Improper selection or usage of products may
cause personal injury or property damage or may happened both. Manufacturer is not liable for in-accuracy of information provided here.
TEMPERATURE DERATING
| Temperature Derating Factor | |||
| Temperature |
SS 316 |
SS 304 | |
| 0F | 0C | ||
| 100 | 37 | 1.00 | 1.00 |
| 200 | 93 | 1.00 | 1.00 |
| 300 | 149 | 1.00 | 1.00 |
| 400 | 204 | 0.96 | 0.94 |
| 500 | 260 | 0.90 | 0.88 |
| 600 | 316 | 0.85 | 0.82 |
| 700 | 371 | 0.82 | 0.80 |
| 800 | 427 | 0.79 | 0.76 |
| 900 | 482 | 0.78 | 0.73 |
| 1000 | 538 | 0.76 | 0.69 |
| 1100 | 593 | 0.62 | 0.49 |
| 1200 | 649 | 0.37 | 0.30 |
TUBING FOR GAS APPLICATION
Fractional Tubing
Tube OD In inch |
Min. Nominal wall Thick- ness |
Tube OD In inch |
Min. Nominal wall Thick- ness |
| 1/8 | 0.028” | 1/2 | 0.049” |
| 3/16 | 0.028” | 5/8 | 0.065” |
| 1/4 | 0.028” | 3/4 | 0.065” |
| 5/16 | 0.035” | 7/8 | 0.083” |
| 3/ 8 | 0.035” | 1 | 0.083” |
Metric Tubing
Tube OD In mm |
Min. Nominal wall Thick- ness |
Tube OD In mm |
Min. Nominal wall Thick- ness |
| 3 | 0.8mm | 16 | 1.5mm |
| 6 | 0.8mm | 18 | 1.5mm |
| 8 | 1.0mm | 20 | 1.8mm |
| 10 | 1.0mm | 22 | 2.0mm |
| 12 | 1.0mm | 25 | 2.20mm |
| 14 | 1.2mm |
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