The pipe cross may have one inlet and three outlets, or there inlets and one outlet. The diameter of the outlet and inlet can be the same and can also be different. That is to say, straight cross and reducing cross are both available.

• There are three female openings in a T shaped pipe cross.
• There are straight pipe crosss which have the same size openings.
• Reducing pipe crosss have one opening of different size and two openings of the same size.
• There are sanitary pipe crosss which are used in waste lines. These kind of pipe crosss have a curved branch which is designed for a clean out plug. They are used to prevent obstruction of waste.
• A cross pipe cross has four equal sized female openings.
• A wing pipe cross has lugs to fasten the fitting to a wall or stud.
• A compression pipe cross uses compression fittings on two or more ends.
• A test pipe cross has a threaded opening. This opening is used in conjunction with a threaded plug for a clean-out opening on a drain pipe.

Pipe crosss are widely used in various commercial and industrial applications. Industrial applications include:

• Chemical processing
• Petroleum
• Pulp/paper
• Refining
• Textile
• Waste treatment, Marine
• Utilities/power generation
• Industrial equipment
• Automotive
• Gas compression and distribution industries
• Pipe crosss are also recommended for industrial plant fluid power systems.

ASME B16.9 Butt weld Reducing Cross Dimensions

Nominal Diameter		Outside Diameter				Center to End
		D1		D2
DN	NPS	Series A	Series B	Series A	Series B	C	M
15×15	1/2×1/2	21.3	18	21.3	18	25	25
15×10	1/2×3/8	21.3	18	17.3	14	25	25
15×8	1/2×1/4	21.3	18	13.7	10	25	25
20×20	3/4×3/4	26.9	25	26.9	25	29	29
20×15	3/4×1/2	26.9	25	21.3	18	29	29
20×10	3/4×3/8	26.9	25	17.3	14	29	29
25×25	1×1	33.7	32	33.7	32	38	38
25×20	1×3/4	33.7	32	26.9	25	38	38
25×15	1×1/2	33.7	32	21.3	18	38	38
32×32	1.1/4×1.1/4	42.4	38	42.4	38	48	48
32×25	1.1/4×1	42.4	38	33.7	32	48	48
32×20	1.1/4×3/4	42.4	38	26.9	25	48	48
32×15	1.1/4×1/2	42.4	38	21.3	18	48	48
40×40	1.1/2×1.1/2	48.3	45	48.3	45	57	57
40×32	1.1/2×1.1/4	48.3	45	42.4	38	57	57
40×25	1.1/2×1	48.3	45	33.7	32	57	57
40×20	1.1/2×3/4	48.3	45	26.9	25	57	57
40×15	1.1/2×1/2	48.3	45	21.3	18	57	57
50×50	2×2	60.3	57	60.3	57	64	64
50×40	2×1.1/2	60.3	57	48.3	45	64	60
50×32	2×1.1/4	60.3	57	42.4	38	64	57
50×25	2×1	60.3	57	33.7	32	64	51
50×20	2×3/4	60.3	57	26.9	25	64	44
65×65	2/1/2×2.1/2	73	76	73	76	76	76
65×50	2/1/2×2	73	76	60.3	57	76	70
65×40	2/1/2×1.1/2	73	76	48.3	45	76	67
65×32	2/1/2×1.1/4	73	76	42.4	38	76	64
65×25	2/1/2×1	73	76	33.7	32	76	57
80×80	3×3	88.9	89	88.9	89	86	86
80×65	3×2.1/2	88.9	89	73	76	86	83
80×50	3×2	88.9	89	60.3	57	86	76
80×40	3×1.1/2	88.9	89	48.3	45	86	73
80×32	3×1.1/4	88.9	89	42.4	38	86	70
90×90	3.1/2×3.1/2	101.6	-	101.6	-	95	95
90×80	3.1/2×3	101.6	-	88.9	89	95	92
90×65	3.1/2×2.1/2	101.6	-	73	76	95	89
90×50	3.1/2×2	101.6	-	60.3	57	95	83
90×40	3.1/2×1.1/2	101.6	-	48.3	45	95	79
100×100	4×4	114.3	108	114.3	108	105	105
100×90	4×3.1/2	114.3	108	101.6	-	105	102
100×80	4×3	114.3	108	88.9	89	105	98
100×65	4×2.1/2	114.3	108	73	76	105	95
100×50	4×2	114.3	108	60.3	57	105	89
100×40	4×1.1/2	114.3	108	48.3	45	105	86
125×125	5×5	141.3	133	141.3	133	124	124
125×100	5×4	141.3	133	114.3	108	124	117
125×90	5×3.1/2	141.3	-	101.6	-	124	114
125×80	5×3	141.3	133	88.9	89	124	111
125×65	5×2.1.2	141.3	133	73	76	124	108
125×50	5×2	141.3	133	60.3	57	124	105
150×150	6×6	168.3	159	168.3	159	143	143
150×125	6×5	168.3	159	141.3	133	143	137
150×100	6×4	168.3	159	114.3	108	143	130
150×90	6×3.1/2	168.3	-	101.6	-	143	127
150×80	6×3	168.3	159	88.9	89	143	124
150×65	6×2.1/2	168.3	159	73	76	143	121
200×200	8×8	219.1	219	219.1	219	178	178
200×150	8×6	219.1	219	168.3	159	178	168
200×125	8×5	219.1	219	141.4	133	178	162
200×100	8×4	219.1	219	114.3	108	178	156
200×90	8×3.1/2	219.1	-	101.6	-	178	152
250×250	10×10	273	273	273	273	216	216
250×200	10×8	273	273	219.1	219	216	203
250×150	10×6	273	273	168.3	159	216	194
250×125	10×5	273	273	141.3	133	216	191
250×100	10×4	273	273	114.3	108	216	184
300×300	12×12	323.9	325	323.9	325	254	254
300×250	12×10	323.9	325	273	273	254	241
300×200	12×8	323.9	325	219.1	219	254	229
300×150	12×6	323.9	325	168.3	159	254	219
300×125	12×5	323.9	325	141.3	133	254	216
350×350	14×14	355.6	377	355.6	377	279	279
350×300	14×12	355.6	377	323.9	325	279	270
350×250	14×10	355.6	377	273	273	279	257
350×200	14×8	355.6	377	219.1	219	279	248
350×150	14×6	355.6	377	168.3	159	279	238
400×400	16×16	406.4	426	406.4	426	305	305
400×350	16×14	406.4	426	355.6	377	305	305
400×300	16×12	406.4	426	323.9	325	305	295
400×250	16×10	406.4	426	273	273	305	283
400×200	16×8	406.4	426	219.1	219	305	273
400×150	16×6	406.4	426	168.3	159	305	264
450×450	18×18	457	480	457	480	343	343
450×400	18×16	457	480	406.4	426	343	330
450×350	18×14	457	480	355.6	377	343	330
450×300	18×12	457	480	323.9	325	343	321
450×250	18×10	457	480	273	273	343	308
450×200	18×8	457	480	219.1	219	343	298
500×500	20×20	508	530	508	530	381	381
500×450	20×20	508	530	457	480	381	368
500×400	20×20	508	530	406.4	426	381	356
500×350	20×20	508	530	355.6	377	381	356
500×300	20×20	508	530	323.9	325	381	346
500×250	20×20	508	530	273	273	381	333
500×200	20×20	508	530	219.1	219	381	324

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.

ANSI/ASME B16.9 Butt weld Equal Cross

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	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	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

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

ANSI/ASME B16.9 Butt weld Equal Cross

Schedule: Sch 5 TO Sch XXS.

Sizes: 1/2” TO 36” (SEAMLESS UPTO 24”) & (WELDED 8” TO 36” )

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 costumised.

Standards: ANSI – B 16.9

• ASTM A403 – ASME SA403 – ‘Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings’
• ASME B16.9 – ‘ Wrought Buttwelding Fittings”
• ASME B16.25 – ‘Buttwelding Ends’
• ASME B16.28 – ‘Wrought Steel Buttwelding Short Radius Elbows and Returns’
• API 590-605
• MSS SP-43 – ‘Fabricated & Wrought Butt-Welding Fittings for Corrosion Resistant, Low Pressure Applications’