Table of Content
Schedule 40 Stainless Steel Pipe dimensions
| Pipe Size | Outside Diameter | Dimensions | ||
|---|---|---|---|---|
| SCH 40 | ||||
| Inches | Inch | mm | ||
| 1/8 | 0.405 | 10.3 | 0.068 | .024 |
| 1/4 | 0.540 | 13.7 | 0.088 | 0.43 |
| 3/8 | 0.675 | 17.1 | 0.091 | 0.57 |
| 1/2 | 0.840 | 21.3 | 0.109 | 0.85 |
| 3/4 | 1.050 | 26.7 | 0.113 | 1.13 |
| 1 | 1.315 | 33.4 | 0.133 | 1.68 |
| 1-1/4 | 1.660 | 42.2 | 0.140 | 2.27 |
| 1-1/2 | 1.900 | 48.3 | 0.145 | 2.72 |
| 2 | 2.375 | 60.3 | 0.154 | 3.66 |
| 2-1/2 | 2.875 | 73.0 | 0.203 | 5.80 |
| 3 | 3.500 | 88.9 | 0.216 | 7.58 |
| 3-1/2 | 4.000 | 101.6 | 0.226 | 9.12 |
| 4 | 4.500 | 114.3 | 0.237 | 10.80 |
| 5 | 5.563 | 141.3 | 0.258 | 14.63 |
| 6 | 6.625 | 168.3 | 0.280 | 18.99 |
SCH 40 Seamless Pipe specification
Frequently used schedule 40 pipe types
Schedule 40 seamless pipe
3in stainless steel ERW pipe
24 inch EFW steel pipe
1/2 inch stainless pipe
SCH 40s welded pipe
3/4 steel pipe diameter
| Gauge | OD | OD Tol | ID | ID Tol | Wall Thk |
|---|---|---|---|---|---|
| 5TW | 0.219 | ±.002 | 0.199 | ±.002 | 0.010 |
| 5RW | 0.219 | 0.189 | ±.003 | 0.015 | |
| 6TW | 0.203 | ±.001 | 0.183 | ±.002 | 0.010 |
| 6RW | 0.203 | 0.173 | ±.003 | 0.015 | |
| 7XT | 0.180 | 0.166 | ±.002 | 0.007 | |
| 7TW | 0.180 | 0.160 | 0.010 | ||
| 7RW | 0.180 | 0.150 | ±.003 | 0.015 | |
| 8XT | 0.165 | 0.150 | ±.0025 | 0.0075 | |
| 8TW | 0.165 | 0.145 | ±.002 | 0.010 | |
| 8RW | 0.165 | 0.135 | ±.003 | 0.015 | |
| 9XT | 0.148 | 0.135 | ±.002 | 0.0065 | |
| 9TW | 0.148 | 0.128 | 0.010 | ||
| 9RW | 0.148 | 0.118 | ±.003 | 0.015 | |
| 10XT | 0.134 | 0.118 | ±.002 | 0.008 | |
| 10TW | 0.134 | 0.114 | 0.010 | ||
| 10RW | 0.134 | 0.106 | 0.014 | ||
| 11XT | 0.120 | 0.106 | 0.007 | ||
| 11TW | 0.120 | 0.100 | 0.010 | ||
| 11RW | 0.120 | 0.094 | 0.013 | ||
| 12XT | 0.109 | 0.095 | 0.007 | ||
| 12TW | 0.109 | 0.091 | 0.009 | ||
| 12RW | 0.109 | 0.085 | 0.012 | ||
| 13XT | 0.095 | 0.085 | ±.001 | 0.005 | |
| 13TW | 0.095 | 0.077 | ±.002 | 0.009 | |
| 13RW | 0.095 | 0.071 | 0.012 | ||
| 14XT | 0.083 | 0.072 | ±.001 | 0.0055 | |
| 14TW | 0.083 | 0.067 | +.0015/-.001 | 0.008 | |
| 14RW | 0.083 | 0.063 | ±.002 | 0.010 | |
| 15TW | 0.072 | ±.0005 | 0.060 | +.0015/-.0005 | 0.006 |
| 15RW | 0.072 | 0.054 | ±.0015 | 0.009 | |
| 16XT | 0.065 | 0.055 | +.0015/-.0005 | 0.005 | |
| 16TW | 0.065 | 0.053 | 0.006 | ||
| 16RW | 0.065 | 0.047 | ±.0015 | 0.009 | |
| 17XT | 0.058 | 0.050 | ±.001 | 0.004 | |
| 17TW | 0.058 | 0.048 | +.0005/-.0015 | 0.005 | |
| 17RW | 0.058 | 0.042 | ±.0015 | 0.008 | |
| 18XT | 0.050 | 0.042 | ±.001 | 0.004 | |
| 18TW | 0.050 | 0.038 | +.0015/-.0005 | 0.006 | |
| 18RW | 0.050 | 0.033 | ±.0015 | 0.0085 | |
| 19XT | 0.042 | 0.035 | ±.001 | 0.0035 | |
| 19TW | 0.042 | 0.032 | +.0015/-.0005 | 0.005 | |
| 19RW | 0.042 | 0.027 | ±.0015 | 0.0075 | |
| 20XT | 0.0355 | +.0005/-0 | 0.0275 | +.001/-.0005 | 0.004 |
| 20TW | 0.0355 | 0.0255 | +.0015/-0 | 0.005 | |
| 20RW | 0.0355 | 0.0235 | +.001/-.0005 | 0.006 | |
| 21XT | 0.032 | 0.025 | 0.0035 | ||
| 21TW | 0.032 | 0.023 | 0.0045 | ||
| 21RW | 0.032 | 0.020 | 0.006 | ||
| 22XT | 0.028 | 0.021 | 0.0035 | ||
| 22TW | 0.028 | 0.020 | 0.004 | ||
| 22RW | 0.028 | 0.016 | 0.006 | ||
| 23TW | 0.025 | 0.017 | 0.004 | ||
| 23RW | 0.025 | 0.013 | 0.006 | ||
| 24TW | 0.022 | 0.014 | 0.004 | ||
| 24RW | 0.022 | 0.012 | 0.005 | ||
| 25TW | 0.020 | 0.012 | 0.004 | ||
| 25RW | 0.020 | 0.010 | 0.005 | ||
| 26TW | 0.018 | 0.012 | 0.003 | ||
| 26RW | 0.018 | 0.010 | 0.004 | ||
| 27TW | 0.016 | 0.010 | 0.003 | ||
| 27RW | 0.016 | 0.008 | 0.004 | ||
| 28TW | 0.014 | 0.009 | 0.0025 | ||
| 28RW | 0.014 | 0.007 | 0.0035 | ||
| 29RW | 0.013 | 0.007 | 0.003 | ||
| 30RW | 0.012 | 0.006 | |||
| 31RW | 0.010 | 0.005 | 0.0025 |
Schedule 40 pipe wall thickness in MM
| Diameter | O/D | Nominal wall thickness | ||||
|---|---|---|---|---|---|---|
| DIA | SCH.40S | SCH 40 | ||||
| (A) | (B) | MM | Wall Thk |
Weight Kg/Mtr | Wall Thk |
Weight Kg/Mtr |
| 6 | 1/8 | 10.3 | 1.73 | 0.37 | - | - |
| 8 | 1/4 | 13.7 | 2.24 | 0.64 | - | - |
| 10 | 3/8 | 17.2 | 2.31 | 0.87 | - | - |
| 15 | 1/2 | 21.3 | 2.77 | 1.29 | - | - |
| 20 | 3/4 | 26.7 | 2.87 | 1.71 | - | - |
| 25 | 1 | 33.4 | 3.38 | 2.54 | - | - |
| 32 | 11/4 | 24.2 | 3.56 | 3.44 | - | - |
| 40 | 11/2 | 48.3 | 3.68 | 4.11 | - | - |
| 50 | 2 | 60.3 | 3.91 | 5.52 | - | - |
| 65 | 21/2 | 73 | 5.16 | 8.77 | - | - |
| 80 | 3 | 88.9 | 5.49 | 11.47 | - | - |
| 90 | 31/2 | 101.6 | 5.74 | 13.78 | - | - |
| 100 | 4 | 114.3 | 6.02 | 6.32 | - | - |
| 125 | 5 | 141.3 | 6.55 | 2210 | - | - |
| 150 | 6 | 168.3 | 7.11 | 28.69 | - | - |
| 200 | 8 | 219.1 | 8.18 | 43.2 | - | - |
| 250 | 10 | 273.1 | 9.27 | 61.22 | - | - |
| 300 | 12 | 323.9 | 9.53 | 75.01 | 10.31 | 80.94 |
| 350 | 14 | 355.6 | 9.53 | 82.58 | 11.13 | 96 |
| 400 | 16 | 406.4 | 9.53 | 94.7 | 12.7 | 125.2 |
| 450 | 18 | 457.2 | 9.53 | 106.83 | 14.27 | 158.27 |
| 500 | 2C | 508 | 9.53 | 118.9 | 15.06 | 185.89 |
| 550 | 22 | 558.8 | 9.53 | 131.07 | 15.88 | 216.04 |
| 600 | 24 | 609.6 | 9.53 | 143.2 | 17.45 | 258.74 |
| 650 | 26 | 660.4 | 9.53 | 155.32 | - | - |
| 700 | 28 | 711.2 | 9.53 | 167.44 | - | - |
| 750 | 3C | 762 | 9.53 | 179.56 | - | - |
| 800 | 32 | 812.8 | 9.53 | 191.69 | 17.48 | 348.11 |
| 850 | 34 | 863.6 | 9.53 | 203.74 | 17.48 | 370.22 |
| 900 | 36 | 914.4 | 9.53 | 215.93 | 19.05 | 427.09 |
| NPS | DN |
|---|---|
| 1 | 25 |
| 3 | 80 |
| 3½ | 90 |
| 1½ | 40 |
| 2 | 50 |
| 1/2 | 15 |
| 3/4 | 20 |
| 4 | 100 |
| 1¼ | 32 |
| 2½ | 65 |
Steel pipe pressure rating schedule 40
| Max Allowable Pressure-(psi)- (kPa) | NPS | (in) | 1 1/4 | 1 1/2 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 30 | 1/2 | 3/8 | 1/2 | 3/4 | 1 | 32 | 34 | 2 | 2 1/2 | 3 | 3 1/2 | 4 | 5 | 36 | 42 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OD | (in) (mm) | 1.66 42.2 | 1.9 48.3 | 6.625 168 | 8.625 219 | 10.75 273 | 12.75 324 | 14 356 | 16 406 | 18 457 | 20 508 | 22 559 | 24 610 | 30 762 | 0.54 13.7 | 0.675 17.1 | 0.84 21.3 | 1.05 26.7 | 1.315 33.4 | 32 813 | 34 864 | 2.375 60.3 | 2.875 73 | 3.5 88.9 | 4 102 | 4.5 114 | 5.563 141 | 36 914 | 42 1067 | |
| SCH | 40 | 4133 28497 | 3739 25780 | 2071 14280 | 1829 12611 | 1664 11473 | 1560 10756 | 1533 10570 | 1531 10556 | 1530 10549 | 1455 10032 | - | 1405 9687 | - | 7985 55057 | 6606 45548 | 6358 43838 | 5273 36357 | 4956 34172 | 1054 7267 | 992 6840 | 3177 21905 | 3460 23857 | 3024 20850 | 2769 19092 | 2581 17796 | 2273 15672 | 1021 7040 | 875 6033 |
Available material in sch 40 pipe
| Material | Grade |
|---|---|
| Stainless Steel | ASTM A312 tp 304, 304l, 316, 316l, 347, 904l |
| Carbon Steel | ASTM A106 Grade B,Grade C , ASTM A333 Grade 6, ASTM A333 Grade 1, ASTM A333 Grade 3 ,ASTM A671, ASTM A672 |
| Alloy Steel | ASTM A335 P5, P11, P91, P22, ASTM A691, AISI 4130, AISI 4140 |
| Mild Steel | SS400, IS2062 Grade B |
| Titanium | Ti Grade 1, Ti Grade 2, Ti Grade 5, Ti Grade 12 |
| Copper Nickel | 70/30, 90/10 |
| Nickel Alloy | Ni Alloy 200, Ni Alloy 201 |
| Inconel | Inconel 600, 601, 625 |
| Hastelloy | Hatelloy C22, C276 |
| Monel | Monel 400, K500 |
Difference between Schedule 10, SCH 40 and SCH 80
| Pipe Size | Weight | |||||
|---|---|---|---|---|---|---|
| SCH 40 | SCH 10 | SCH 80 | ||||
| NPS | lb/ft | kg/m | lb/ft | kg/m | lb/ft | kg/m |
| 1/2 | 0.54 | 0.80 | 0.68 | 1.00 | 0.54 | 0.80 |
| 3/4 | 0.69 | 1.03 | 0.87 | 1.29 | 0.69 | 1.03 |
| 1 | 0.87 | 1.30 | 1.41 | 2.11 | 0.87 | 1.30 |
| 1 1/4 | 1.12 | 1.66 | 1.82 | 2.71 | 1.12 | 1.66 |
| 1 1/2 | 1.28 | 1.91 | 2.1 | 3.13 | 1.28 | 1.91 |
| 2 | 1.61 | 2.40 | 2.66 | 3.96 | 1.61 | 2.40 |
| 2 1/2 | 2.49 | 3.71 | 3.56 | 5.29 | 2.49 | 3.71 |
| 3 | 3.05 | 4.54 | 4.37 | 6.50 | 3.05 | 4.54 |
| 3 1/2 | 3.50 | 5.21 | 5.01 | 7.46 | 3.50 | 5.21 |
| 4 | 3.95 | 5.88 | 5.66 | 8.42 | 3.95 | 5.88 |
| 5 | 6.40 | 9.52 | 7.82 | 11.64 | 6.40 | 9.52 |
| 6 | 7.65 | 11.38 | 9.35 | 13.91 | 7.65 | 11.38 |
| 8 | 9.99 | 14.87 | 13.50 | 20.10 | 9.99 | 14.87 |
| 10 | 15.29 | 22.76 | 18.79 | 27.96 | 15.29 | 22.76 |
| 12 | 21.13 | 31.44 | 24.34 | 36.22 | 21.13 | 31.44 |
| 14 | 23.22 | 34.56 | 27.97 | 41.62 | 23.22 | 34.56 |
| 16 | 28.11 | 41.83 | 32.02 | 47.65 | 28.11 | 41.83 |
| 18 | 31.64 | 47.09 | 36.05 | 53.65 | 31.64 | 47.09 |
| 20 | 40.12 | 59.70 | 46.42 | 69.09 | 40.12 | 59.70 |
| 22 | 44.18 | 65.75 | 51.14 | 76.10 | 44.18 | 65.75 |
| 24 | 55.85 | 83.11 | 63.93 | 95.13 | 55.85 | 83.11 |
| 30 | 80.02 | 119.09 | 99.60 | 148.22 | 80.02 | 119.09 |
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