Dimensioni e tolleranze ASME B16.9, MSS SP43

Ø NPS	Ø DN
1/2	15
Outside Diameter Ø D:21,3 +1,6/-0,8 Outside Diameter of Barrel ASME B16.9 Min – Max:22,8 – 20,5 Length ASME B16.9, Long \| F:76 +/-2 ASME B16.9 Short, MSS SP43 \| F:51 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:3 +0/-1 MSS SP43 tp B \| R:0,8 max Diameter of lap G:35 +0/-1 Lap Thickness T:+1,6/-0
3/4	20
Outside Diameter Ø D:26,7 +1,6/-0,8 Outside Diameter of Barrel ASME B16.9 Min – Max:28,1 – 25,9 Length ASME B16.9, Long \| F:76 +/-2 ASME B16.9 Short, MSS SP43 \| F:51 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:3 +0/-1 MSS SP43 tp B \| R:0,8 max Diameter of lap G:43 +0/-1 Lap Thickness T:+1,6/-0
1	25
Outside Diameter Ø D:33,4 +1,6/-0,8 Outside Diameter of Barrel ASME B16.9 Min – Max:35,0 – 32,6 Length ASME B16.9, Long \| F:102 +/-2 ASME B16.9 Short, MSS SP43 \| F:51 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:3 +0/-1 MSS SP43 tp B \| R:0,8 max Diameter of lap G:51 +0/-1 Lap Thickness T:+1,6/-0
1 1/4	32
Outside Diameter Ø D:42,2 +1,6/-0,8 Outside Diameter of Barrel ASME B16.9 Min – Max:43,6 – 41,4 Length ASME B16.9, Long \| F:102 +/-2 ASME B16.9 Short, MSS SP43 \| F:51 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:5 +0/-1 MSS SP43 tp B \| R:0,8 max Diameter of lap G:64 +0/-1 Lap Thickness T:+1,6/-0
1 1/2	40
Outside Diameter Ø D:48,3 +1,6/-0,8 Outside Diameter of Barrel ASME B16.9 Min – Max:49,9 – 47,5 Length ASME B16.9, Long \| F:102 +/-2 ASME B16.9 Short, MSS SP43 \| F:51 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:6 +0/-1 MSS SP43 tp B \| R:0,8 max Diameter of lap G:73 +0/-1 Lap Thickness T:+1,6/-0
2	50
Outside Diameter Ø D:60,3 +1,6/-0,8 Outside Diameter of Barrel ASME B16.9 Min – Max:62,4 – 59,5 Length ASME B16.9, Long \| F:152 +/-2 ASME B16.9 Short, MSS SP43 \| F:64 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:8 +0/-1 MSS SP43 tp B \| R:0,8 max Diameter of lap G:92 +0/-1 Lap Thickness T:+1,6/-0
2 1/2	65
Outside Diameter Ø D:73,0 +1,6/-0,8 Outside Diameter of Barrel ASME B16.9 Min – Max:75,3 – 72,2 Length ASME B16.9, Long \| F:152 +/-2 ASME B16.9 Short, MSS SP43 \| F:64 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:8 +0/-1 MSS SP43 tp B \| R:0,8 max Diameter of lap G:105 +0/-1 Lap Thickness T:+1,6/-0
3	80
Outside Diameter Ø D:88,9 +1,6/-1,6 Outside Diameter of Barrel ASME B16.9 Min – Max:91,3 – 88,1 Length ASME B16.9, Long \| F:152 +/-2 ASME B16.9 Short, MSS SP43 \| F:64 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:10 +0/-1 MSS SP43 tp B \| R:0,8 max Diameter of lap G:127 +0/-1 Lap Thickness T:+1,6/-0
3 1/2	90
Outside Diameter Ø D:101,6 +1,6/-1,6 Outside Diameter of Barrel ASME B16.9 Min – Max:104,0 – 100,8 Length ASME B16.9, Long \| F:152 +/-2 ASME B16.9 Short, MSS SP43 \| F:76 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:10 +0/-1 MSS SP43 tp B \| R:0,8 max Diameter of lap G:140 +0/-1 Lap Thickness T:+1,6/-0
4	100
Outside Diameter Ø D:114,3 +1,6/-1,6 Outside Diameter of Barrel ASME B16.9 Min – Max:116,7 – 113,5 Length ASME B16.9, Long \| F:152 +/-2 ASME B16.9 Short, MSS SP43 \| F:76 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:11 +0/-2 MSS SP43 tp B \| R:0,8 max Diameter of lap G:157 +0/-1 Lap Thickness T:+1,6/-0
5	125
Outside Diameter Ø D:141,3 +2,4/-1,6 Outside Diameter of Barrel ASME B16.9 Min – Max:144,3 – 140,5 Length ASME B16.9, Long \| F:203 +/-2 ASME B16.9 Short, MSS SP43 \| F:76 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:11 +0/-2 MSS SP43 tp B \| R:1,6 max Diameter of lap G:186 +0/-1 Lap Thickness T:+1,6/-0
6	150
Outside Diameter Ø D:168,3 +2,4/-1,6 Outside Diameter of Barrel ASME B16.9 Min – Max:171,3 – 167,5 Length ASME B16.9, Long \| F:203 +/-2 ASME B16.9 Short, MSS SP43 \| F:89 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:13 +0/-2 MSS SP43 tp B \| R:1,6 max Diameter of lap G:216 +0/-1 Lap Thickness T:+1,6/-0
8	200
Outside Diameter Ø D:219,1 +2,4/-1,6 Outside Diameter of Barrel ASME B16.9 Min – Max:222,1 – 218,3 Length ASME B16.9, Long \| F:203 +/-2 ASME B16.9 Short, MSS SP43 \| F:102 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:13 +0/-2 MSS SP43 tp B \| R:1,6 max Diameter of lap G:270 +0/-1 Lap Thickness T:+1,6/-0
10	250
Outside Diameter Ø D:273,0 +4,0/-3,2 Outside Diameter of Barrel ASME B16.9 Min – Max:277,2 – 272,3 Length ASME B16.9, Long \| F:254 +/-2 ASME B16.9 Short, MSS SP43 \| F:127 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:13 +0/-2 MSS SP43 tp B \| R:1,6 max Diameter of lap G:324 +0/-2 Lap Thickness T:+3,2/-0
12	300
Outside Diameter Ø D:323,8 +4,0/-3,2 Outside Diameter of Barrel ASME B16.9 Min – Max:328,0 – 323,1 Length ASME B16.9, Long \| F:254 +/-2 ASME B16.9 Short, MSS SP43 \| F:152 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:13 +0/-2 MSS SP43 tp B \| R:1,6 max Diameter of lap G:381 +0/-2 Lap Thickness T:+3,2/-0
14	350
Outside Diameter Ø D:355,6 +4,0/-3,2 Outside Diameter of Barrel ASME B16.9 Min – Max:359,9 – 354,8 Length ASME B16.9, Long \| F:305 +/-2 ASME B16.9 Short, MSS SP43 \| F:152 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:13 +0/-2 MSS SP43 tp B \| R:1,6 max Diameter of lap G:413 +0/-2 Lap Thickness T:+3,2/-0
16	400
Outside Diameter Ø D:406,4 +4,0/-3,2 Outside Diameter of Barrel ASME B16.9 Min – Max:411,0 – 405,6 Length ASME B16.9, Long \| F:305 +/-2 ASME B16.9 Short, MSS SP43 \| F:152 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:13 +0/-2 MSS SP43 tp B \| R:1,6 max Diameter of lap G:470 +0/-2 Lap Thickness T:+3,2/-0
18	450
Outside Diameter Ø D:457,0 +4,0/-3,2 Outside Diameter of Barrel ASME B16.9 Min – Max:462,0 – 456,0 Length ASME B16.9, Long \| F:305 +/-2 ASME B16.9 Short, MSS SP43 \| F:152 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:13 +0/-2 MSS SP43 tp B \| R:1,6 max Diameter of lap G:533 +0/-2 Lap Thickness T:+3,2/-0
20	500
Outside Diameter Ø D:508,0 +6,4/-4,8 Outside Diameter of Barrel ASME B16.9 Min – Max:514,0 – 507,0 Length ASME B16.9, Long \| F:305 +/-2 ASME B16.9 Short, MSS SP43 \| F:152 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:13 +0/-2 MSS SP43 tp B \| R:1,6 max Diameter of lap G:584 +0/-2 Lap Thickness T:+3,2/-0
22	550
Outside Diameter Ø D:559,0 +6,4/-4,8 Outside Diameter of Barrel ASME B16.9 Min – Max:565,0 – 558,0 Length ASME B16.9, Long \| F:305 +/-2 ASME B16.9 Short, MSS SP43 \| F:152 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:13 +0/-2 MSS SP43 tp B \| R:1,6 max Diameter of lap G:641 +0/-2 Lap Thickness T:+3,2/-0
24	600
Outside Diameter Ø D:610,0 +6,4/-4,8 Outside Diameter of Barrel ASME B16.9 Min – Max:616,0 – 609,0 Length ASME B16.9, Long \| F:305 +/-2 ASME B16.9 Short, MSS SP43 \| F:152 +/-2 Radius of fillet ASME B16.9, MSS SP43 tp A \| R:13 +0/-2 MSS SP43 tp B \| R:1,6 max Diameter of lap G:692 +0/-2 Lap Thickness T:+3,2/-0

Unless otherwise indicated, dimensions are in mm.
The purchaser must specify long or short pattern fitting.
A minimum wall thickness of 87,5% applies unless the purchaser specifies a different wall thickness tolerance.
Out of round is the sum of absolute values of plus and minus tolerances.
Gasket face finish shall be in accordance with ASME B16.5 for raised face flanges (note 1). The most common finish is the Stock Finish. The lap thickness T shall not be less than nominal pipe wall thickness.
The radius "R" according to ASME 16.9 and MSS SP 43 type A, comply with Lap Joint Flanges according to ASME B16.5.
The radius "R" according to MSS SP 43 type B, comply with Slip On Flanges according to ASME B16.5.

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ASME B16.9, MSS SP43 - Dimensions and tolerances