Stainless Steel Pipe Dimesions and Weight

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Nominal
Pipe Size
Outside
Diameter
OD
Tolerance
Nominal Wall Thickness & Weights
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 8.56 0.36 2.41 7.88 0.46
 1/4 8 0.54 13.72 + 0.4 to -0.8 1.65 10.42 0.49 2.24 11.48 0.63 3.02 10.70 0.80
 3/8 10 0.68 17.15 + 0.4 to -0.8 1.65 13.85 0.63 2.31 14.84 0.84 3.20 13.95 1.10
 1/2 15 0.84 21.34 + 0.4 to -0.8 2.11 17.12 1.00 2.77 18.57 1.27 3.73 17.61 1.60
 3/4 20 1.05 26.67 + 0.4 to -0.8 2.11 22.45 1.27 2.87 23.80 1.93 3.91 22.76 2.18
1 25 1.32 33.41 + 0.4 to -0.8 2.77 27.87 2.08 3.38 30.03 2.50 4.55 28.86 3.29
1 1/4 32 1.66 42.16 + 0.4 to -0.8 2.77 36.62 2.69 3.56 38.60 3.38 4.85 37.31 4.46
1 1/2 40 1.90 48.26 + 0.4 to -0.8 2.77 42.72 3.11 3.68 44.58 4.05 5.08 43.18 5.40
2 50 2.38 60.30 + 0.8 to -0.8 2.77 54.76 3.93 3.91 56.39 5.43 5.54 54.76 7.48
2 1/2 65 2.88 73.03 + 0.8 to -0.8 3.05 69.98 5.25 5.16 67.87 8.61 7.01 66.02 11.39
3 80 3.50 88.90 + 0.8 to -0.8 3.05 85.85 6.44 5.49 83.41 11.27 7.62 81.28 15.32
3 1/2 90 4.00 101.60 + 0.8 to -0.8 3.05 98.55 7.39 5.74 95.86 13.55 8.08 93.52 18.59
4 100 4.50 114.30 + 0.8 to -0.8 3.05 111.25 8.34 6.02 108.28 16.06 8.56 105.74 22.31
5 125 5.56 141.30 + 1.6 to -0.8 3.40 137.90 11.56 6.55 134.75 21.70 9.53 131.77 30.94
6 150 6.63 168.28 + 1.6 to -0.8 3.40 164.88 13.82 7.11 161.17 28.30 10.97 157.31 42.54
8 200 8.63 219.18 + 1.6 to -0.8 3.76 215.42 19.93 8.18 211.00 42.50 12.70 206.48 64.60
10 250 10.75 273.05 + 2.4 to -0.8 4.19 268.86 27.82 9.27 263.78 60.24 12.70 260.35 81.42
12 300 12.75 323.85 + 2.4 to -0.8 4.57 319.28 36.00 9.53 314.32 73.78 12.70 311.15 97.31
14 350 14.00 355.60 + 2.4 to -0.8 4.78 350.82 41.30
16 400 16.00 406.40 + 2.4 to -0.8 4.78 401.62 47.30
18 450 18.00 457.20 + 2.4 to -0.8 4.78 452.42 53.30
20 500 20.00 508.00 + 3.2 to -0.8 5.54 502.46 68.60
22 550 22.00 558.80 + 3.2 to -0.8 5.54 553.26 75.50
24 600 24.00 609.60 + 3.2 to -0.8 6.35 603.25 94.50
30 750 30.00 762.00 + 4.0 to -0.8 7.93 754.07 147.40
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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