Dimensions Butt Weld Reducing Tees ASME B16.9

OTHER DIAMETERS

1/2 - 4

5 - 16

18 - 26

28 - 32

34 - 38

40 - 42

44 - 48

NPS	O.D. D	O.D. D1	Center to End C	Center to End M
5 - 2	141.3	60.3	124	105
5 - 2.1/2	141.3	73	124	108
5 - 3	141.3	88.9	124	111
5 - 3.1/2	141.3	101.6	124	114
5 - 4	141.3	114.3	124	117
6 - 2.1/2	168.3	73	143	121
6 - 3	168.3	88.9	143	124
6 - 3.1/2	168.3	101.6	143	127
6 - 4	168.3	114.3	143	130
6 - 5	168.3	141.3	143	137
8 - 3.1/2	219.1	101.6	178	152
8 - 4	219.1	114.3	178	156
8 - 5	219.1	141.3	178	162
8 - 6	219.1	168.3	178	168
10 - 4	273	114.3	216	184
10 - 5	273	141.3	216	191
10 - 6	273	168.3	216	194
10 - 8	273	219.1	216	203
12 - 5	323.8	141.3	254	216
12 - 6	323.8	168.3	254	219
12 - 8	323.8	219.1	254	229
12 - 10	323.8	273	254	241
14 - 6	355.6	168.3	279	238
14 - 8	355.6	219.1	279	248
14 - 10	355.6	273	279	257
14 - 12	355.6	323.8	279	270
16 - 6	406.4	168.3	305	264
16 - 8	406.4	219.1	305	273
16 - 10	406.4	273	305	283
16 - 12	406.4	323.8	305	295
16 - 14	406.4	355.6	305	305

Dimensions are in millimeters unless otherwise indicated.
Wall thickness (t) must be specified by customer.

Dimensional Tolerances Reducing Tees ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8	10 to 18	20 to 24	26 to 30	32 to 48
Outside Dia at Bevel (D)	+1.6 -0.8	1.6	1.6	+2.4 -1.6	+4 -3.2	+6.4 -4.8	+6.4 -4.8	+6.4 -4.8
Inside Dia at End	0.8	1.6	1.6	1.6	3.2	4.8	+6.4 -4.8	+6.4 -4.8
Center to End (C / M)	2	2	2	2	2	2	3	5
Wall Thk (t)	Not less than 87.5% of Nominal Wall Thickness

Dimensional tolerances are in millimeters unless otherwise indicated and are equal ± except as noted.

Note..
MSS SP-43 only covers stainless steel buttweld fittings made for use with Schedule 5S and 10S pipe and Stub Ends suitable for use with Schedule 40S pipe, as defined in ASME B36.19. The dimensions and dimensional tolerances defined in MSS SP-43 are substantially the same as those in ASME B16.9 specifications from NPS 1/2 - NPS 24. Except with regard to the outside diameter at the bevel.

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