Home / Products / Butt-Welding Fittings / ANSI/ASME B16.9 Straight Tees and Crosses

Pipe Tee is a type of pipe fitting which is T-shaped having two outlets, at 90° to the connection to the main line. It is a short piece of pipe with a lateral outlet. Pipe Tee is used to connect pipelines with a pipe at a right angle with the line. Pipe Tees are widely used as pipe fittings. They are made of various materials and available in various sizes and finishes. Pipe tees are extensively used in pipeline networks to transport two-phase fluid mixtures.

ANSI/ASME B16.9 Straight Tees and Crosses

Standards:	ANSI - B 16.9 ASTM A403 - ASME SA403 - 'Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings' API 590-605 ASME B16.9 - 'Factory-Made Wrought Buttwelding Fittings'' ASME B16.25 - 'Buttwelding Ends' ASME B16.28 - 'Wrought Steel Buttwelding Short Radius Elbows and Returns' MSS SP-43 - 'Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications'
Schedule:	Sch 5 TO Sch XXS.
Sizes:	1/2” TO 36” (SEAMLESS UPTO 24”) (WELDED 8” TO 36” )
Materials:	Monel, Nickel, Inconel, Hastalloy, Titanium, Tantalum, Stainless Steel, Alloy Steel, Carbon Steel, Cupro-Nickel 90/10 & 70/30 Stainless Steel ASME / ASTM SA / A403 SA / A 774 WP-S, WP-W, WP-WX, 304, 304L, 316, 316L, 304/304L,  316/316L, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404
Type:	Butt Weld (BW)
Thickness:	Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc.
Dimension:	ANSI B16.9, ANSI B16.28, MSS-SP-43 Type A, MSS-SP-43 Type B, JIS B2312, JIS B2313

Dimensions

Dimensions butt welded Straight Tees - NPS 1/2 - 48 according to ASME B16.9

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

DIMENSIONAL TOLERANCES STRAIGHT TEES ACCORDING TO ASME B16.9

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 B36.19M. The dimensions and tolerances defined in
MSS SP-43 are substantially the same as those in ASME B16.9 specifications from NPS 1/2 up to NPS 24. Except
with regard to the outside diameter at the bevel.

FACTORY-MADE WROUGHT BUTTWELDING FITTINGS - ASME B16.9

DIMENSIONS OF STRAIGHT TEES AND CROSSES

Nominal Pipe Size (NPS)	DN	Outside Diameter at Bevel	Center- to-End
			Run.C	Outlet. M[Notes(1) and (2)]
1/2	15	21.3	25	25
3/4	20	26.7	29	29
1	25	33.4	38	38
1-1/4	32	42.2	48	48
1-1/2	40	48.3	57	57
2	50	60.3	64	64
2-1/2	65	73.0	76	76
3	80	88.9	86	86
3-1/2	90	101.6	95	95
4	100	114.3	105	105
5	125	141.3	124	124
6	150	168.3	143	143
8	200	219.1	178	178
10	250	273.0	216	216
12	300	323.8	254	254
14	350	355.6	279	279
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

GENERAL NOTES: All dimensions are in millimeters.
(a). Outlet dimension M for NPS 26(DN 650) and large is recommended but not required.
(b). Dimensions applicable to crosses NPS 24(DN 600) and smaller.

Main Export Market

• Eastern Europe
• North America
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• Western Europe
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