Specifications List	ASME B16.9 Reducer
Eccentric Reducers Uses	ASME B16.9 Stainless Steel Eccentric Reducer reduces the pipes from the side.
Concentric Reducers Uses	ASME B16.9 Stainless Steel Concentric Reducer have a cone shape that decreases gradually around the pipe.
Dimensions	MSS SP-75 BS 4825 JIS B2313 EN 10253-2 EN 10253-4 JIS B2312
Size	NPS 2" To NPS 48"
Methods	ButtWeld/ Welded/ Seamless
Pressure Rating	Class 150 To Class 600
Types Of Reducer	Concentric And Eccentric
Schedule	SCH 5S/ SCH 10s/ SCH 20S/ SCH 40/ SCH 80

Grade Name	Stainless Steel 304 Reducer
Si	- 2.0
Ni	8.0 10.5
N	- 0.10
P	- 0.75
S	- 0.045
Mo	18.0 20.0
C	min. & max.
Mn	- 0.08
Cr	- 0.030

Code Of RCD Reiso	(BIG) Ø			(SMALL) Ø			Hight (H) In Millmeter	Weight Of Theoretical In Kilogram
Code Of RCD Reiso	(DN)	D In Millmeter	(S) Thickness In MM	(DN)	D Millmeter	(S) Thickness In MM	Hight (H) In Millmeter	Weight Of Theoretical In Kilogram
27 21	3/4	26.9	2.3	1/2	21.3	2.0	38	0.08
33 21	1	33.7	2.6	1/2	21.3	2.0	50	0.09
33 27	1	33.7	2.6	3/4	26.9	2.3	50	0.09
42 21	1"1/4	42.4	2.6	1/2	21.3	2.0	50	0.12
42 27				3/4	26.9	2.3		0.13
42 33				1	33.7	2.6		0.14
*48 21	1"1/2	48.3	2.6	1/2	21.3	2.0	64	0.18
48 27				3/4	26.9	2.3		0.19
48 33				1	33.7	2.6		0.20
48 42				1"1/4	42.4	2.6		0.20
60 27	2	60.3	2.9	3/4	26.9	2.3	76	0.30
60 33				1	33.7	2.6		0.31
60 42				1"1/4	42.4	2.6		0.32
60 48				1"1/2	48.3	2.6		0.33
76 33	2"1/2	76.1	2.9	1	33.7	2.6	90	0.40
76 42				1"1/4	42.4	2.6		0.47
76 48				1"1/2	48.3	2.6		0.48
76 60				2	60.3	2.6		0.49
89 42	3	88.9	3.2	1"1/4	42.4	2.6	90	0.55
89 48				1"1/2	48.3	2.6		0.61
89 60				2	60.3	2.9		0.62
89 76				2"1/2	76.1	2.9		0.63
114 48	4	114.3	3.6	1"1/2	48.3	2.6	100	0.85
114 60				2	60.3	2.9		0.98
114 76				2"1/2	76.1	2.9		1.00
114 89				3	88.9	3.2		1.02
139 60	5	139.7	4.0	2	60.3	2.9	127	1.60
139 76				2"1/2	76.1	2.9		1.70
139 89				3	88.9	3.2		1.74
139 114				4	114.3	3.6		1.76
*168 76	6	168.3	4.5	2"1/2	76.1	2.9	140	2.60
168 89				3	88.9	3.2		2.70
168 114				4	114.3	3.6		2.82
168 139				5	139.7	4.0		2.94
219 114	8	219.1	6.3	4	114.3	3.6	152	5.03
219 139				5	139.7	4.0		5.12
219 168				6	168.3	4.5		5.18
*273 114	10	273.0	6.3	4	114.3	3.6	178	7.00
*273 139				5	139.7	4.0		7.20
273 168				6	168.3	4.5		7.40
273 219				8	219.1	6.3		7.55
323 168	12	323.9	7.1	6	168.3	4.5	203	11.00
323 219				8	219.1	6.3		11.10
323 273				10	273	6.3		11.20

Code Of RCD REISO	Ø (BIG)			Ø (SMALL)			Hight In (MM)	Weight Of Theoretical In KG
Code Of RCD REISO	(DN)	D In MM	(S) Thickness In MM	(DN)	(D) In Millimeter	(S) Thickness In MM	Hight In (MM)	Weight Of Theoretical In KG
27 21	3/4	26.9	2.3	1/2	21.3	2.0	38	0.08
33 21	1	33.7	2.6	1/2	21.3	2.0	50	0.09
33 27	1	33.7	2.6	3/4	26.9	2.3	50	0.09
42 21	1″1/4	42.4	2.6	1/2	21.3	2.0	50	0.12
42 27				3/4	26.9	2.3		0.13
42 33				1	33.7	2.6		0.14
*48 21	1″1/2	48.3	2.6	1/2	21.3	2.0	64	0.18
48 27				3/4	26.9	2.3		0.19
48 33				1	33.7	2.6		0.20
48 42				1″1/4	42.4	2.6		0.20
60 27	2	60.3	2.9	3/4	26.9	2.3	76	0.30
60 33				1	33.7	2.6		0.31
60 42				1″1/4	42.4	2.6		0.32
60 48				1″1/2	48.3	2.6		0.33
76 33	2″1/2	76.1	2.9	1	33.7	2.6	90	0.40
76 42				1″1/4	42.4	2.6		0.47
76 48				1″1/2	48.3	2.6		0.48
76 60				2	60.3	2.6		0.49
89 42	3	88.9	3.2	1″1/4	42.4	2.6	90	0.55
89 48				1″1/2	48.3	2.6		0.61
89 60				2	60.3	2.9		0.62
89 76				2″1/2	76.1	2.9		0.63
114 48	4	114.3	3.6	1″1/2	48.3	2.6	100	0.85
114 60				2	60.3	2.9		0.98
114 76				2″1/2	76.1	2.9		1.00
114 89				3	88.9	3.2		1.02
139 60	5	139.7	4.0	2	60.3	2.9	127	1.60
139 76				2″1/2	76.1	2.9		1.70
139 89				3	88.9	3.2		1.74
139 114				4	114.3	3.6		1.76
*168 76	6	168.3	4.5	2″1/2	76.1	2.9	140	2.60
168 89				3	88.9	3.2		2.70
168 114				4	114.3	3.6		2.82
168 139				5	139.7	4.0		2.94
219 114	8	219.1	6.3	4	114.3	3.6	152	5.03
219 139				5	139.7	4.0		5.12
219 168				6	168.3	4.5		5.18
*273 114	10	273.0	6.3	4	114.3	3.6	178	7.00
*273 139				5	139.7	4.0		7.20
273 168				6	168.3	4.5		7.40
273 219				8	219.1	6.3		7.55
323 168	12	323.9	7.1	6	168.3	4.5	203	11.00
323 219				8	219.1	6.3		11.10
323 273				10	273	6.3		11.20

Size (in)	Approx Weight In (lbs)
3/4 x 1/2	0.21
1 x 1/2	0.36
1 x 3/4	0.36
1-1/4 x 1/2	0.42
1-1/4 x 3/4	0.42
1-1/4 x 1	0.48
1-1/2 x 1/2	0.56
1-1/2 x 3/4	0.56
1-1/2 x 1	0.57
1-1/2 x 1-1/4	0.65
2 x 1/2	0.74
2 x 3/4	0.74
2 x 1	0.81
2 x 1-1/4	0.88
2 x 1-1/2	0.94
2-1/2 x 1	1.3
2-1/2 x 1-1/4	1.4
2-1/2 x 1-1/2	1.5
2-1/2 x 2	1.6
3 x 1	1.7
3 x 1-1/4	1.8
3 x 1-1/2	1.9
3 x 2	2
3 x 2-1/2	2.2
3-1/2 x 1-1/4	2.5
3-1/2 x 1-1/2	2.6
3-1/2 x 2	2.6

Dimensional Tolerances of ASME B16.9 Concentric and Eccentric Reducer
Nominal Size Of Pipe	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8
Outer Diameter (O.D.) at Bevel (D)	+ 1.6 - 0.8	1.6	1.6	+ 2.4 - 1.6
Inner Diameter (I.D.) at End	0.8	1.6	1.6	1.6
Overall Length Of (H)	2	2	2	2
Nominal Size Of Pipe	10 to 18	20 to 24	26 to 30	32 to 48
Outer Diameter (O.D.) at Bevel (D)	+ 4 - 3.2	+ 6.4 - 4.8	+ 6.4 - 4.8	+ 6.4 - 4.8
Inner Diameter (I.D.) at End	3.2	4.8	+ 6.4 - 4.8	+ 6.4 - 4.8
Overall Length Of (H)	2	2	5	5
Wall Thickness (W.T.) (t)	Nominal Wall Thickness Not less than 87.5%

-	(DN1)	(d1)	(s1)	(s1)	(s1)	(DN2)	(d2)	(a/°)	(s2)	(s2)	(s2)	(s3)	(s3)	(s3)
-	15	21.3	2.0	3.2	4.0	10	17.2	6	1.8	2.9	-	2.0	3.2	-
-	20	26.9	2.3	3.2	4.0	15	21.3	8	2.0	3.2	4.0	2.3	3.2	4.0
-						10	17.2	12	1.8	2.9	-	2.3	3.2	-
-	25	33.7	2.6	3.2	4.0	20	26.9	7	2.3	3.2	4.0	2.6	3.2	4.0
-						15	21.3	12	2.0	3.2	4.0	2.6	3.2	4.0
-	32	42.4	2.6	3.6	4.0	25	33.7	9	2.6	3.2	4.0	2.6	3.6	4.0
-						20	26.9	15	2.3	3.2	4.0	2.6	3.6	4.0
-						15	21.3	19	2.0	3.2	4.0	2.6	3.6	4.0
-	40	48.3	2.6	4.0	5.0	32	42.4	6	2.6	3.6	4.0	2.6	4.0	5.0
-						25	33.7	10	2.6	3.2	4.0	2.6	4.0	5.0
-						20	26.9	16	2.3	3.2	4.0	2.6	4.0	5.0
-	50	60.3	2.9	4.5	5.6	40	48.3	7	2.6	4.0	5.0	2.9	4.5	5.6
-						32	42.4	11	2.6	3.6	4.0	2.9	4.5	5.6
-						25	33.7	16	2.6	3.2	4.0	2.9	4.5	5.6
-						20	26.9	21	2.3	3.2	4.0	2.9	4.5	5.6
-	65	76.1	2.9	5.0	7.1	50	60.3	9	2.9	4.5	5.6	2.9	5.0	7.1
-						40	48.3	15	2.6	4.0	5.0	2.9	5.0	7.1
-						32	42.4	18	2.6	3.6	4.0	2.9	5.0	7.1
-						25	33.7	23	2.6	3.2	4.0	2.9	5.0	7.1
-	80	88.9	3.2	5.6	8.0	65	76.1	7	2.9	5.0	7.1	3.2	5.6	8.0
-						50	60.3	16	2.9	4.5	5.6	3.2	5.6	8.0
-						40	48.3	22	2.6	4.0	5.0	3.2	5.6	8.0
-						32	42.4	26	2.6	3.6	4.0	3.2	5.6	8.0
-	100	114.3	3.6	6.3	8.8	80	88.9	13	3.2	5.6	8.0	3.6	6.3	8.8
-						65	76.1	18	2.9	5.0	7.1	3.6	6.3	8.8
-						50	60.3	26	2.9	4.5	5.6	3.6	6.3	8.8
-						40	48.3	31	2.6	4.0	5.0	3.6	6.3	8.8
-	125	139.7	4.0	6.3	10.0	100	114.3	10	3.6	6.3	8.8	4.0	6.3	10.0
-						80	88.9	20	3.2	5.6	8.0	4.0	6.3	10.0
-						65	76.1	25	2.9	5.0	7.1	4.0	6.3	10.0
-						50	60.3	30	2.9	4.5	5.6	4.0	6.3	10.0
-	150	168.3	4.5	7.1	11.0	125	139.7	9	4.0	6.3	10.0	4.5	7.1	11.0
-						100	114.3	19	3.6	6.3	8.8	4.5	7.1	11.0
-						80	88.9	27	3.2	5.6	8.0	4.5	7.1	11.0
-						65	76.1	31	2.9	5.0	7.1	4.5	7.1	11.0
-	200	219.1	6.3	8.0	12.5	150	168.3	18	4.5	7.1	11.0	6.3	8.0	12.5
-						125	139.7	27	4.0	6.3	10.0	6.3	8.0	12.5
-						100	114.3	33	3.6	6.3	8.8	6.3	8.0	12.5
-						80	88.9	39	3.2	5.6	8.0	6.3	8.0	12.5
-	250	273.0	6.3	8.8	14.2	200	219.1	16	6.3	8.0	12.5	6.3	8.8	14.2
-						150	168.3	30	4.5	7.1	11.0	6.3	8.8	14.2
-						125	139.7	36	4.0	6.3	10.0	6.3	8.8	14.2
-						100	114.3	40	3.6	6.3	8.8	6.3	8.8	14.2
-	300	323.9	7.1	10.0	16.0	250	273.0	12	6.3	8.8	14.2	7.1	10.0	16.0
-						200	219.1	24	6.3	8.0	12.5	7.1	10.0	16.0
-						150	168.3	35	4.5	7.1	11.0	7.1	10.0	16.0
-						125	139.7	40	4.0	6.3	10.0	7.1	10.0	16.0

Sizes Of Stainless Steel Reducers In (mm)	(Inner Daimeter) In (mm)	(Outside Daimeter) In (mm)	ASME B16.9 Reducers Height In (mm)	Carbon Steel Reducers Radius In (mm)
(DN10)	12	20	4.5	2.3
(DN15)	18	26	4.5	2.3
(DN20)	23	33	4.5	2.8
(DN25)	30	40	5	2.8
(DN32)	36	46	5	2.8
(DN40)	42	52	5	2.8
(DN50)	54	64	5	2.8
(DN65)	71	81	5	2.8
(DN80)	85	95	5	2.8
(DN100)	104	114	6	2.8
(DN125)	130	142	7	3.5
(DN150)	155	167	7	3.5

JIS B2312 Reducers Size D1			JIS B2312 Reducers Sizes D2
DN	Size Of Steel Pipe	Outer Daimeter in (mm)	JIS B2312 Reducers Sizes D2
20	3/4"	27.2	DN 15
25	1"	34.0	DN 20/ DN 15
32	1-1/4"	42.7	DN 25/ DN 15
40	1-1/2"	48.6	DN 32/ DN 15
50	2"	60.5	DN 40/DN 32
65	2-1/2"	76.3	DN 32/DN 40
80	3"	89.1	DN 40/DN 50
90	3-1/2"	101.6	DN 50/DN 40/DN 80
100	4"	114.3	DN 50/DN 40/ DN 90

NPS Of Stainless Steel Concentric Reducers	ASME B16.9 Reducers Weight In (LBS)	Weight In Kilogram
3/4-1/2	0.17	0.08
3/4-3/8	0.15	0.07
1-3/4	0.4	0.18
1-1/2	0.4	0.18
1.1/4-1	0.5	0.23
1.1/4-3/4	0.4	0.18
1.1/4-1/2	0.4	0.18
1.1/2-1.1/4	0.7	0.32
1.1/2-1	0.62	0.28
1.1/2-3/4	0.54	0.24
1.1/2-1/2	0.5	0.23
2-1.1/2	0.9	0.41
2-1.1/4	0.84	0.38
2-1	0.76	0.34
2-3/4	0.7	0.32
2.1/2-2	1.5	0.68
2.1/2-1.1/2	1.38	0.63
2.1/2-1.1/4	1.25	0.57
2.1/2-1	1.25	0.57
3-2.1/2	2	0.91
3-2	1.8	0.82
3-1.1/2	1.7	0.77
3-1.1/4	1.6	0.73
3.1/2-3	3.15	1.43
3.1/2-2.1/2	2.88	1.31
3.1/2-2	2.75	1.25
3.1/2-1.1/2	2.5	1.13
3.1/2-1.1/4	2.4	1.09
4-3.1/2	3.5	1.59
4-3	3.38	1.53
4-2.1/2	3.25	1.47
4-2	3	1.36
4-1.1/2	2.88	1.31
5-4	6	2.72
5-3.1/2	5.75	2.61
5-3	5.5	2.49
5-2.1/2	5.25	2.38
5-2	5	2.27
6-5	8.5	3.86
6-4	8.25	3.74
6-3.1/2	8.25	3.74
6-3	8	3.63
6-2.1/2	7.25	3.29
8-6	13.2	5.99
8-5	12	5.44
8-4	11	4.99
8-3.1/2	11	4.99
10-8	22	9.98
10-6	21.5	9.75
10-5	21	9.53
10-4	20	9.07
12-10	34	15.42
12-8	32	14.51
12-6	31	14.06
12-5	30	13.61
14-12	60	27.22
14-10	59.2	26.85
14-8	58.5	26.54
14-6	58	26.31
16-14	71	32.21
16-12	70	31.75
16-10	69.5	31.52
16-8	68.5	31.07
16-6	-	-
18-16	85	38.56
18-14	84	38.1
18-12	83	37.65
18-10	82	37.19
18-8	-	-
20-18	125	56.7
20-16	124	56.25
20-14	122	55.34
20-12	120	54.43
20-10	-	-
20-8	-	-
22-20	142	64.41
22-18	138	62.6
22-16	131	59.42
22-14	123	55.79
22-12	-	-
22-10	-	-
24-22	-	-
24-20	150	68.04
24-18	148	67.13
24-16	145	65.77
24-14	-	-
24-12	-	-
24-10	-	-
26-24	207	93.89
26-22	200	90.72
26-20	190	86.18
26-18	182	82.55
26-16	-	-
26-14	-	-
26-12	-	-
28-26	224	101.6
28-24	216	97.98
28-22	210	95.25
28-20	199	90.26
30-28	241	109.32
30-26	232	105.23
30-24	224	101.6
30-22	220	99.79
30-20	220	99.79
NPS	LBS	KG

ASME B16.9 Pressure Ratings
Stainless Steel Reducers Temperature Ratings		Types Of Pressure Ratings Class
		Class 150#	Class 300#
			1/4 - 1 (Inch)	1 1/4 - 2 (Inch)	2 1/2 - 3 (Inch)
(^oF)	(^oC)		1/4 - 1 (Inch)	1 1/4 - 2 (Inch)	2 1/2 - 3 (Inch)
-20 to 150	-29 to 66	300	2000	1500	1000
200	93	265	1785	1350	910
250	121	225	1575	1200	825
300	149	185	1360	1050	735
350	177	150	1150	900	650
400	204	-	935	750	560
450	232	-	725	600	475
500	260	-	510	450	385
550	288	-	300	300	300

Normal Size Of Steel Pipe	Pipe Sch No.	Weight In Kilogram	(Small) Inner Daimeter	(Small) Thickness	(Large) Outer Daimeter	(Large) Inner Daimeter	(Large) Thickness	(Small) Outer Daimeter	Length Of Con Reducer
12 x 4	40	35.8	4.026	0.237	12.75	11.938	0.406	4.5	8
16 x 6	40	96.5	6.06	0.28	16	15	0.5	6.62	14
18 x 8	40	131	7.976	0.322	18	16.876	0.562	8.62	15
20 x 10	40	205	10.02	0.365	20	18.812	0.594	10.75	20
20 x 8	40	205	7.976	0.322	20	18.812	0.594	8.62	20
24 x 10	40	285	10.02	0.365	24	22.624	0.688	10.75	20
24 x 12	40	285	11.938	0.406	24	22.624	0.688	12.75	20
24 x 14	40	285	13.124	0.438	24	22.624	0.688	14	20
12 x 10	40	35.8	10.02	0.365	12.75	11.938	0.406	10.75	8
12 x 5	40	35.8	5.044	0.258	12.75	11.938	0.406	5.56	8
12 x 6	40	35.8	6.06	0.28	12.75	11.938	0.406	6.62	8
12 x 8	40	35.8	7.976	0.322	12.75	11.938	0.406	8.62	8
14 x 10	40	68.6	10.02	0.365	14	13.124	0.438	10.75	13
14 x 12	40	68.6	11.938	0.406	14	13.124	0.438	12.75	13
14 x 6	40	68.6	6.06	0.28	14	13.124	0.438	6.62	13
14 x 8	40	68.6	7.976	0.322	14	13.124	0.438	8.62	13
16 x 10	40	96.5	10.02	0.365	16	15	0.5	10.75	14
16 x 12	40	96.5	11.938	0.406	16	15	0.5	12.75	14
16 x 14	40	96.5	13.124	0.438	16	15	0.5	14	14
16 x 8	40	96.5	7.976	0.322	16	15	0.5	8.62	14
18 x 10	40	131	10.02	0.365	18	16.876	0.562	10.75	15
18 x 12	40	131	11.938	0.406	18	16.876	0.562	12.75	15
18 x 14	40	131	13.124	0.438	18	16.876	0.562	14	15
18 x 16	40	131	15	0.5	18	16.876	0.562	16	15
20 x 12	40	205	11.938	0.406	20	18.812	0.594	12.75	20
20 x 14	40	205	13.124	0.438	20	18.812	0.594	14	20
20 x 16	40	205	15	0.5	20	18.812	0.594	16	20
20 x 18	40	205	16.876	0.562	20	18.812	0.594	18	20
24 x 16	40	285	15	0.5	24	22.624	0.688	16	20
24 x 18	40	285	16.876	0.562	24	22.624	0.688	18	20
24 x 20	40	285	18.812	0.594	24	22.624	0.688	20	20

ASME B16.9 Reducer

ASME B16.9 Reducer

ASME B16.9 Reducer Specification

Carbon Steel Reducer Sizes

Copper Reducer Dimensions

Stainless Steel 304 Reducer Chemical Composition

Stainless Steel Reducer Grades

Stainless Steel 304 Pipe Fittings

Stainless Steel 304L Pipe Fittings

Stainless Steel 316 Pipe Fittings

Stainless Steel 316L Pipe Fittings

Stainless Steel 316Ti Pipe Fittings

Stainless Steel 347H Pipe Fittings

Stainless Steel 410 Pipe Fittings

Stainless Steel 904L Pipe Fittings

ASME B16.9 Reducer Dimensions

ASME B16.9 Concentric Reducers Dimensions

ASME B16.9 Eccentric Reducer Dimensions

Types Of Buttweld Reducer

ASME B16.9 Concentric Reducers

Buttweld Concentric Reducers

Aluminum Concentric Reducers

Grooved Concentric Reducers

Carbon Steel Concentric Reducers

Copper Concentric Reducers

Mild Steel Eccentric Reducers

ASME B16.9 Eccentric Reducers

Ductile Iron Eccentric Reducers

Stainless Steel Eccentric Reducers

Carbon Steel Eccentric Reducers

Stainless Steel Reducer Fittings

Reducer SS 304

SS Pipe Reducer

SS Concentric Reducer

SS 304 Reducer

SCH 40/ STD Buttweld Concentric Reducer Weight

Carbon Steel Butt Weld Pipe Reducer Application

ANSI B16 9 Reducer Tolerance

DIN 2616 Reducer Dimensions

DIN 11851 Reducer Dimensions

JIS B2312 Reducer Dimensions

Concentric Reducer Surface Area Formula

8 X 6 Concentric Reducer Weight

Concentric Reducer Pressure Rating

ASME B16.9 Reducer Thickness

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