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Pipe Outside Dia's & wall thickesses, to ANSI B36.10 and BS1600 Schedule Sizes-

Important Note:
Please check my numbers if you are doing detail design



Schedule s Piping
Schedule 5s, 10s , 40s and 80s apply to stainless steel (Austenitic chromium nickel) only
Schedule 40s piping includes all sizes up to, and including 12" and is dimensionally the same as Standard wall piping.
Schedule 80s piping includes all sizes up to, and including 12" and is dimensionally the same as Extra strong piping


Nom size OD Schedule vs (Wall thickness in mm)
in mm Sched 5s Sched 10
s= 10s
Sched 20 Sched 30 Sched 40 Sched 60 Sched 80 Sched 100 Sched 120 Sched 140 Sched 160 Std.Wall Extra Strong.
1/8 10,3   s=1,24     1,73   2,41         1,73 2,41
1/4 13,7   s =1,65     2,24   3,02         2,24 3,02
3/8 17,1   s=1,65     2,31   3,2         2,31 3,2
1/2 21,3 1,65 s =2,11     2,77   3,73       4,78 2,77 3,73
3/4 26,7 1,65 s=2,11     2,87   3,91       5,56 2,87 3,91
1 33,4 1,65 s =2,77     3,38   4,55       6,35 3,38 4,55
1 1/4 42,2 1,65 s =2,77     3,56   4,85       6,35 3,56 4,85
1 1/2 48,3 1,65 s =2,77     3,68   5,08       7,14 3,68 5,08
2 60,3 1,65 s =2,77     3,91   5,54       8,74 3,91 5,54
2 1/2 73,0 2,11 s =3,05     5,16   7,01       9,53 5,16 7,01
3 88,9 2,11 s =3,05     5,49   7,62       11,13 5,49 7,62
3 1/2 101,6 2,11 s=3,05     5,74   8,08         5,74 8,08
4 114,3 2,11 s=3,05     6,02   8,56   11,13   13,49 6,02 8,56
5 141,3 2,77 s=3,4     6,55   9,53   12,70   15,88 6,55 9,53
6 168,3 2,77 s=3,4     7,11   10,97   14,27   18,26 7,11 10,97
8 219,1 2,77 s=3,76 6,35 7,04 8,18 10,31 12,7 15,09 18,26 20,62 23,01 8,18 12,7
10 273,0 3,40 s =4,19 6,35 7,8 9,27 12,70 15,09 18,26 21,44 25,40 28,58 9,27 12,7
12 323,8 3,96 s =4,57 6,35 8,38 10,31 14,27 17,48 21,44 25,4 28,58 33,32 9,53 12,7
14 355,6 3,96 s= 4,78 6,35 7,92 9,53 11,13 15,09 19,05 23,83 27,79 31,75 35,71 9,53 12,7
16 406,4 4,19 s = 4,78 6,35 7,92 9,53 12,7 16,66 21,44 26,19 30,96 36,53 40,49 9,53 12,7
18 457 4.19 s = 4,78 6,35 7,92 11,13 14,27 19,05 23,83 29,36 34,93 39,67 45,24 9,53 12,7
20 508 4,78 s = 5,54 6,35 9,53 12,70 15,09 20,62 26,19 32,54 38,10 44,45 50,01 9,53 12,7
22 559 4,78 s =5,54 6,35 9,53 12,70 - 22,23 28,58 34,93 41,28 47,63 53,98 9,53 12,7
24 610 5,54 s =6,35 6,35 9,53 14,27 17,48 24,61 30,96 38,89 46,02 52,37 59,54 9,53 12,7
26 660   7,92 12,7                 9,53 12,7
28 711   7,92 12,7 15,88               9,53 12,7
30 762 6,35 s = 7,92 7,92 12,70 15,88               9,53 12,7
32 813   7,92 12,70 15,88 17,48             9,53 12,7
34 864   7,92 12,70 15,88 17,48             9,53 12,7
36 914   7,92 12,70 15,88 19,05             9,53 12,7
42 1067                       9,53 12,7
in mm Sched 5s Sched 10
s= 10s
Sched 20 Sched 30 Sched 40 Sched 60 Sched 80 Sched 100 Sched 120 Sched 140 Sched 160 Std.Wall Extra Strong
Nom size OD Schedule vs (Wall thickness in mm)


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Last Updated 23/01/2013