Stainless Steel Pipe

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Nominal Outside OD Nominal Wall Thickness & Weights
Pipe Size Diameter Tolerance
10S 40S 80S
(NPS) (NB) (in) (mm) (mm) (mm) ID (kg/m) (mm) ID (kg/m) (mm) ID (kg/m)
 1/8 6 0.41 10.29 + 0.4 to -0.8 1.24 7.81 0.28 1.73 6.83 0.36 2.41 5.47 0.46
 1/4 8 0.54 13.72 + 0.4 to -0.8 1.65 10.42 0.49 2.24 9.24 0.63 3.02 7.68 0.8
 3/8 10 0.68 17.15 + 0.4 to -0.8 1.65 13.85 0.63 2.31 12.53 0.84 3.2 10.75 1.1
 1/2 15 0.84 21.34 + 0.4 to -0.8 2.11 17.12 1 2.77 15.8 1.27 3.73 13.88 1.6
 3/4 20 1.05 26.67 + 0.4 to -0.8 2.11 22.45 1.27 2.87 20.93 1.93 3.91 18.85 2.18
1 25 1.32 33.41 + 0.4 to -0.8 2.77 27.87 2.08 3.38 26.65 2.5 4.55 24.31 3.29
1 1/4 32 1.66 42.16 + 0.4 to -0.8 2.77 36.62 2.69 3.56 35.04 3.38 4.85 32.46 4.46
1 1/2 40 1.9 48.26 + 0.4 to -0.8 2.77 42.72 3.11 3.68 40.9 4.05 5.08 39.1 5.4
2 50 2.38 60.3 + 0.8 to -0.8 2.77 54.76 3.93 3.91 52.48 5.43 5.54 49.22 7.48
2 1/2 65 2.88 73.03 + 0.8 to -0.8 3.05 66.93 5.25 5.16 62.71 8.61 7.01 59.01 11.39
3 80 3.5 88.9 + 0.8 to -0.8 3.05 82.80 6.44 5.49 77.92 11.27 7.62 73.66 15.32
3 1/2 90 4 101.6 + 0.8 to -0.8 3.05 95.50 7.39 5.74 90.12 13.55 8.08 85.44 18.59
4 100 4.5 114.3 + 0.8 to -0.8 3.05 108.20 8.34 6.02 102.26 16.06 8.56 97.18 22.31
5 125 5.56 141.3 + 1.6 to -0.8 3.4 134.50 11.56 6.55 128.2 21.7 9.53 122.24 30.94
6 150 6.63 168.28 + 1.6 to -0.8 3.4 161.48 13.82 7.11 154.06 28.3 10.97 146.34 42.54
8 200 8.63 219.18 + 1.6 to -0.8 3.76 211.66 19.93 8.18 202.82 42.5 12.7 193.78 64.6
10 250 10.75 273.05 + 2.4 to -0.8 4.19 264.67 27.82 9.27 254.51 60.24 12.7 247.65 81.42
12 300 12.75 323.85 + 2.4 to -0.8 4.57 314.71 36 9.53 304.79 73.78 12.7 298.45 97.31
14 350 14 355.6 + 2.4 to -0.8 4.78 346.04 41.3
16 400 16 406.4 + 2.4 to -0.8 4.78 396.84 47.3
18 450 18 457.2 + 2.4 to -0.8 4.78 447.64 53.3
20 500 20 508 + 3.2 to -0.8 5.54 496.92 68.6
22 550 22 558.8 + 3.2 to -0.8 5.54 547.72 75.5
24 600 24 609.6 + 3.2 to -0.8 6.35 596.90 94.5
30 750 30 762 + 4 to -0.8 7.93 746.14 147.4

 

Note:- Note1: Diameter and wall thickness as per ANSI B36.19
Note 2: Weights are given as a guide only
Note 3: Permissible variations in dimensions of ASTM A312 pipe are given in ASTM/A1530M
* Wall thickness shall be not more than 12.5% under the nominal specified
* Outside diameter shall be within the tolerance limits above. These limits include ovality unless the pipe is defined as “thin wall” wall thickness 3% or less of the outside diameter), in which case the difference in extreme outside diameter readings (ovality) in any one cross-section shall not exceed 1.5% of the specified outside diameter. Much schedule 5S and 10S pipe in particular is “thin wall”.

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