Reducer, Pipe Fittings

Concentric reducer is a kind of fitting that be used for reducing piping size. Concentric reducer is most commonly used and often eccentric reducer used in piping in about pump and pipe rack area. Reducer

Eccentric reducer is most commonly used and often eccentric reducer used in piping in about pump and pipe rack area.

These reducers are used in various applications that involved in high pressure, vibration & temperature. These reducers are widely used in chemical, petroleum, shipbuilding, gas, power sectors.

Carbon Steel Reducers with A234 WPB and 1/2 to 56-inch Size (DN15 to DN1400)

Material Grade:
WPB WPC WP1 WP12 CL1 WP12 CL2 WP11 CL3 WP22 CL1 WP22 CL3 WP5 CL1 WP5 CL3 WPR WP91 WP911 WP11 CL1 WP11 CL2 WP9 CL1 WP9 CL3

Applications of Pipe Reducer:
Pipe Reducer
Hydraulic system
Pneumatic system
Pharmaceutical fittings
Air brake fittings
Gas fittings
Refrigerant fittings
Changing the piping diameter
Handling the expansion, misalignment or vibration problem

Sizes

Nominal pipe DN size	Outside Diameter at Bevel				Center to End
	D1		D2		End to End L
	Series A	Series B	Series A	Series B	End to End L
20×15	26.9	25	21.3	18	38
25×20 25×15	33.7 33.7	32 32	26.9 21.3	25 18	51 51
32×25 32×20 32×15	42.4 42.4 42.4	38 38 38	33.7 26.9 21.3	32 25 18	51 51 51
40×32 40×25 40×20 40×15	48.3 48.3 48.3 48.3	45 45 45 45	42.4 33.7 26.7 21.3	38 32 25 18	64 64 64 64
50×40 50×32 50×25 50×20	60.3 60.3 60.3 60.3	57 57 57 57	48.3 42.4 33.7 26.9	45 38 32 25	76 76 76 76
65×50 65×40 65×32 65×25	76.1(73) 76.1(73) 76.1(73) 76.1(73)	76 76 76 76	60.3 48.3 42.4 33.7	57 45 38 32	89 89 89 89
80×65 80×50 80×40 80×32	88.9 88.9 88.9 88.9	89 89 89 89	76.1(73) 60.3 48.3 42.4	76 57 45 38	89 89 89 89
90×80 90×65 90×50 90×40 90×32	101.6 101.6 101.6 101.6 101.6	- - - - -	88.9 76.1(73) 60.3 48.3 42.4	- - - - -	102 102 102 102 102
100×90 100×80 100×65 100×50 100×40	114.3 114.3 114.3 114.3 114.3	108 108 108 108 108	101.6 88.9 76.1(73) 60.3 48.3	- 89 76 57 45	102 102 102 102 102
125×100 125×90 125×80 125×65 125×50	139.7 139.7 139.7 139.7 139.7	133 - 133 133 133	114.3 101.6 88.9 76.1(73) 60.3	108 - 89 76 57	127 127 127 127 127
150×125 150×100 150×90 150×80 150×65	168.3 168.3 168.3 168.3 168.3	159 159 - 159 159	139.7 114.3 101.6 88.9 76.1(73)	133 108 - 89 76	140 140 140 140 140
200×150 200×125 200×100 200×90	219.1 219.1 219.1 219.1	219 219 219 -	163.8 139.7 114.3 101.6	159 133 108 -	152 152 152 152
250×200 250×150 250×125 250×100	273.0 273.0 273.0 273.0	273 273 273 273	219.1 168.3 139.7 114.3	219 159 133 108	178 178 178 178
300×250 300×200 300×150 300×125	323.9 323.9 323.9 323.9	325 325 325 325	273.0 219.1 168.3 139.7	273 219 159 133	203 203 203 203
350×300 350×250 350×200 350×150	355.6 355.6 355.6 355.6	377 377 377 377	323.9 273.0 219.1 168.3	325 273 219 159	330 330 330 330
400×350 400×300 400×250 400×200	406.4 406.4 406.4 406.4	426 426 426 426	355.6 323.9 273.0 219.1	377 325 273 219	356 356 356 356
450×400 450×350 450×300 450×250	457.2 457.2 457.2 457.2	478 478 478 478	406.4 355.6 323.9 273.0	426 377 325 273	381 381 381 381
500×450 500×400 500×350 500×300	508.0 508.0 508.0 508.0	529 529 529 529	457.2 406.4 355.6 323.9	478 426 377 325	508 508 508 508
550×500 550×450 550×400 550×350	559 559 559 559	- - - -	508 457 406 356	- - - -	508 508 508 508
600×550 600×500 600×450 600×400	610 610 610 610	- 630 630 630	559 508 457 406	- 530 480 426	508 508 508 508
650×600 650×550 650×500 650×450	660 660 660 660	- - - -	610 559 508 457	- 630 - 630	610 610 610 610
700×650 700×600 700×550 700×500	711 711 711 711	- 720 - 720	660 310 559 508	- 720 - 630	610 610 610 610
750×700 750×650	762 762	- -	711 660	- -	610 610
750×600 750×550	762 762	- -	610 559	- -	610 610
800×750 800×700 800×650 800×600	813 813 813 813	- 820 - 820	762 711 660 610	- 720 - 630	610 610 610 610
850×800 850×750 850×700 850×650	864 864 864 864	- - - -	813 762 711 660	- - - -	610 610 610 610
900×850 900×800 900×750 900×700	914 914 914 914	- 920 - 920	864 813 762 711	- 820 - 820	610 610 610 610
950×900 950×850 950×800 950×750	965 965 965 965	- - - -	914 864 813 762	- - - -	610 610 610 610
1000×950 1000×900 1000×850 1000×800	1016 1016 1016 1016	- 1020 - 1020	965 914 864 813	- 920 - 920	610 610 610 610
1050×1000 1050×950 1050×900 1050×850	1067 1067 1067 1067	- - - -	1016 965 914 864	- - - -	610 610 610 610
1100×1050 1100×1000 1100×950 1100×900	1118 1118 1118 1118	- 1120 - 1120	1067 1016 965 914	- 1020 - 1020	610 610 610 610
1150×1100 1150×1050 1150×1000 1150×950	1168 1168 1168 1168	- - - -	1118 1067 1016 965	- - - -	711 711 711 711
1200×1150 1200×1100 1200×1050 1200×1000	1220 1220 1220 1220	- 1220 - 1220	1168 1118 1067 1016	- 1120 - 1120	711 711 711 711

Length of reducers The length of a Reducer is very short in relation to the diameter, so in some dimensions the transition from one to another diameter is very abruptly. For example, a reducer 6″ x 2½” has a length of 140 mm. On this short distance a pipeline will be reduced from 168.3 mm O.D. to 73 mm O.D. During the design phase of a new pipe system, a piping designer certainly must think about it.

REDUCERS
inches	mm	D	d	H
3/4 x 3/4	20 x 15	26,67	21,34	38,10
3/4 x 3/8	20 x 10	26,67	17,14	38,10
1 x 3/4	25 x 20	33,40	26,67	50,80
1 x 1/2	25 x 15	33,40	21,34	50,80
1 1/4 x 1	32 x 25	42,16	33,40	50,80
1 1/4 x 3/4	32 x 20	42,16	26,67	50,80
1 1/4 x 1/2	32 x 15	42,16	21,34	50,80
1 1/2 x 1 1/4	40 x 32	48,26	42,16	63,50
1 1/2 x 1	40 x 25	48,26	33,40	63,50
1 1/2 x 3/4	40 x 20	48,26	26,67	63,50
1 1/2 x 1/2	40 x 15	48,26	21,34	63,50
2 x 1 1/2	50 x 40	60,32	48,26	76,20
2 x 1 1/4	50 x 32	60,32	42,16	76,20
2 x 1	50 x 25	60,32	33,40	76,20
2 x 3/4	50 x 20	60,32	26,67	76,20
2 1/2 x 2	65 x 50	73,02	60,32	88,90
2 1/2 x 1 1/2	65 x 40	73,02	48,26	88,90
2 1/2 x 1 1/4	65 x 32	73,02	42,16	88,90
2 1/2 x1	65 x 25	73,02	33,40	88,90
3 x 2 1/2	80 x 65	88,90	73,02	88,90
3 x 2	80 x 50	88,90	60,32	88,90
3 x 1 1/2	80 x 40	88,90	48,26	88,90
3 x 1 1/4	80 x 32	88,90	42,16	88,90
3 1/2 x 3	90 x 80	101,60	88,90	101.60
3 1/2 x 2 1/2	90 x 65	101,60	73,02	101.60
3 1/2 x 2	90 x 50	101,60	60,32	101.60
3 1/2 x 1 1/2	90 x 40	101,60	48,26	101.60
3 1/2 x 1 1/4	90 x 32	101,60	42,16	101.60
4 x 3 1/2	100 x 90	114,30	73,02	101.60
4 x 3	100 x 80	114,30	88,90	101.60
4 x 2 1/2	100 x 65	114,30	73,02	101.60
4 x 2	100 x 50	114,30	60,32	101.60
4 x 1 1/2	100 x 40	114,30	48,26	101.60
5 x 4	125 x 100	141,30	114,30	127,00
5 x 3 1/2	125 x 90	141,30	101,60	127,00
5 x 3	125 x 80	141,30	88,90	127,00
5 x 2 1/2	125 x 65	141,30	73,02	127,00
5 x 2	125 x 50	141,30	60,32	127,00
6 x 5	150 x 125	168,27	141,30	139,7
6 x 4	150 x 100	168,27	114,30	139,7
6 x 1/2	150 x 90	168,27	101,60	139,7
6 x 3	150 x 80	168,27	88,90	139,7
6 x 1/2	150 x 65	168,27	73,02	139,7
8 x 6	200 x 150	219,07	168,27	152,4
8 x 5	200 x 125	219,07	141,30	152,4
8 x 4	200 x 100	219,07	114,30	152,4
8 x 3 1/2	200 x 90	219,07	101,60	152,4
10 x 8	250 x 200	273,05	219,07	177,8
10 x 6	250 x 150	273,05	168,27	177,8
10 x 5	250 x 125	273,05	141,30	177,8
10 x 4	250 x 100	273,05	114,30	177,8
12 x 10	300 x 250	323,85	273,05	203,2
12 x 8	300 x 200	323,85	219,07	203,2
12 x 6	300 x 150	323,85	168,27	203,2
12 x 5	300 x 125	323,85	141,30	203,2
14 x 12	350 x 300	355,60	323,85	330,2
14 x 10	350 x 250	355,60	273,05	330,2
14 x 8	350 x 200	355,60	219,07	330,2
14 x 6	350 x 150	355,60	168,27	330,2
16 x 14	400 x 350	406,40	355,60	355,6
16 x 12	400 x 300	406,40	323,85	355,6
16 x 10	400 x 250	406,40	273,05	355,6
16 x 8	400 x 200	406,40	219,07	355,6
18 x 16	450 x 400	457,20	406,40	381,0
18 x 14	450 x 350	457,20	355,60	381,0
18 x 12	450 x 300	457,20	323,85	381,0
18 x 10	450 x 250	457,20	273,05	381,0
20 x 18	500 x 450	508,00	457,20	508,0
20 x 16	500 x 400	508,00	406,40	508,0
20 x 14	500 x 350	508,00	355,60	508,0
20 x 12	500 x 300	508,00	323,85	508,0
22 x 20	550 x 500	558,80	508,00	508,0
22 x 18	550 x 450	558,80	457,20	508,0
22 x 16	550 x 400	558,80	406,40	508,0
22 x 14	550 x 350	558,80	355,60	508,0
24 x 22	600 x 550	609,6	558,80	508,0
24 x 20	600 x 500	609,6	508,00	508,0
24 x 18	600 x 450	609,6	457,20	508,0
24 x 16	600 x 400	609,6	406,40	508,0

Pattern

Weld

Seamless

Size

1/2”-48”

(DN15-DN1200)

1/2”-20”

(DN15-DN500)

2~1600mm

2~50mm