Manufacturers Standardization Society (MSS)

Manufacturers Standardization Society


Dimensions of Butt Weld Elbows 45°-90° LR MSS SP-75

Butt Weld Elbows 90 deg and 45 deg LR

OTHER FITTING DIMENSIONS

Elbows LR 45°-90°
NPS
D
DN
D
OD
D
Center to End
90 deg Elbows
A
45 deg Elbows
B
16 400 406.4 610 254
18 450 457 686 286
20 500 508 762 318
22 550 559 838 343
24 600 610 914 381
26 650 660 991 406
28 700 711 1067 438
30 750 762 1143 470
32 800 813 1219 502
34 850 864 1295 533
36 900 914 1372 565
38 950 965 1448 600
40 1000 1016 1524 632
42 1050 1067 1600 660
44 1100 1118 1676 695
46 1150 1168 1753 727
48 1200 1219 1829 759
50 1250 1270 1905 787
52 1300 1321 1981 819
54 1350 1372 2057 851
56 1400 1422 2134 883
58 1450 1473 2210 914
60 1500 1524 2286 946
  • Dimensions are in millimeters unless otherwise indicated
  • Wall thickness (t) must be specified by customer


Dimensional Tolerances MSS SP-75

NPS Inside Diameter at End Out of Roundness
At Ends of Fittings Throughout body of Elbows
Elbows Other
16-24 ±2.29 4.83 3.05 2.5%
26-36 ±2.29 *A 3.05 2.5%
38-48 ±3.05 *A 3.05 2.5%
50-60 ±6.35 *A 3.05 2.5%
*A out-of-roundness tolerances at ends shall be 1% of diameter for NPS26 and larger

NPS 90°-45°
Elbows LR
Cte
Tees
Cte
Reducers
Length
Caps
Length
16-24 ±2.29 ±2.29 ±2.29 ±6.35
26-36 ±3.05 ±3.05 ±4.83 ±9.65
38-48 ±4.83 ±4.83 ±9.65 ±9.65
50-60 ±6.35 ±6.35 ±9.65 ±9.65
Cte = Center to end Dimension

NPS Angularity off Angle Q Elbows Off Plane P Eccentric and Concentric Reducers Off Plane *B
16-24 2.29 6.35 2.5%
26-36 2.29 12.70 2.5%
38-48 3.05 19.05 2.5%
50-60 4.80 19.05 2.5%
*B Values that are percent of O.D.

Dimensional tolerances are in millimeters unless otherwise indicated




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