Manufacturers Standardization Society (MSS)

Manufacturers Standardization Society

Dimensions of Butt Weld Straight Tees MSS SP-75

Straight Tee MSS SP-75

OTHER FITTING DIMENSIONS

Elbows LR 45°-90°

Reducers Con-Ecc

Straight Tees

NPS D	DN D	OD D	Center to End
NPS D	DN D	OD D	Run C	Outlet M
16	400	406.4	305	305
18	450	457	343	343
20	500	508	381	381
22	550	559	419	419
24	600	610	432	432
26	650	660	495	495
28	700	711	521	521
30	750	762	559	559
32	800	813	597	597
34	850	864	635	635
36	900	914	673	673
38	950	965	711	711
40	1000	1016	749	749
42	1050	1067	762	711
44	1100	1118	813	762
46	1150	1168	851	800
48	1200	1219	889	838
50	1250	1270	934	876
52	1300	1321	978	908
54	1350	1372	1016	946
56	1400	1422	1054	978
58	1450	1473	1092	1016
60	1500	1524	1118	1054

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	Throughout body of Elbows
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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