Butt weld fittings

Tees straight

Dimensions of Butt Weld Straight Tee-ASME B16.9
NPS	O.D.	Center-to-End	Center-to-End
	D	C	M
1/2	21.3	25	25
3/4	26.7	29	29
1	33.4	38	38
1 ¼	42.2	48	48
1 ½	48.3	57	57
2	60.3	64	64
2 ½	73	76	76
3	88.9	86	86
3 ½	101.6	95	95
4	114.3	105	105
5	141.3	124	124
6	168.3	143	143, , , , ,
8	219.1	178	178
10	273	216	216
12	323.8	254	254
14	355.6	279	279
16	406.4	305	305
18	457	343	343
20	508	381	381
22	559	419	419
24	610	432	432
26	660	495	495
28	711	521	521
30	762	559	559
32	813	597	597
34	864	635	635
36	914	673	673
38	965	711	711
40	1016	749	749
42	1067	762	711
44	1118	813	762
46	1168	851	800
48	1219	889	838

Dimensions are in millimeters unless otherwise indicated. Wall thickness (t) must be specified by customer.
Outlet dimension (M) for NPS 26 and larger is recommended but not required.

Tolerance of Straight Tee-ASME B16.9
Nominal Pipe Size	1/2 to 2½	3 to 3½	4	5 to 8	10 to 18	20 to 24	26 to 30	32 to 48
Outside Diameter 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 Diameter 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)<, /SPA, N>	2	2	2	2	2	2	3	5
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

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

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Butt weld fittings

Tees straight