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Stainless Steel Concentric Reducer

Concentric Reducer

ASME B16.9/ ASTM A403

The stainless steel concentric reducer is a high-quality ASME B16.9 stainless steel pipe fitting designed to connect stainless steel pipes of different diameters in a straight line, ensuring a smooth flow transition. This symmetrical reducer allows for balanced fluid or gas movement, reducing turbulence and maintaining pressure consistency across the stainless steel pipeline. Made from premium stainless steel, our stainless steel concentric reducer offers superior corrosion resistance, strength, and durability, making them ideal for demanding industrial applications.

Our stainless steel concentric reducers are manufactured to meet international standards such as ASTM, JIS, and DIN, ensuring precision and reliability in various industries including oil and gas, chemical processing, and water treatment.

S&S Catalogue

Specifications

Material Grade 304, 316, 316L
Nominal Pipe Size 3/4”x1/2” – 48”x40”
Thickness SCH 5S, SCH 10S, SCH 20S, SCH 40S, SCH 80S, STD, XS

Weight Chart

The weight chart for the stainless steel concentric reducer can be found in the reference information

Package

Standard stainless steel export package by wooden bundle

Secure and Durable Protection. The export wooden bundle ensures that the stainless steel pipe fittings remain intact and undamaged, even under rough handling and long-distance shipping conditions.
Carefully Packed and labeled. Each item is meticulously packed in accordance with the packing list to ensure the right quantity and correct product types are included in every shipment.

stainless steel concentric reducer from S&S Stainless International

Product Specification

3/4” – 12”

ASME B16.9 stainless steel reducer dimension chart, sizing from 3/4'' to 12''.

Nominal Pipe Size (inch)		Outside Diameter (mm)		Thickness (mm)								Length H (mm)
		Outside Diameter (mm)		SCH 5S		SCH 10S		SCH 40S		SCH 80S
		1	2	T1	T2	T1	T2	T1	T2	T1	T2
¾’’	½’’	26.7	21.3	1.65	1.65	2.11	2.11	2.87	2.77	3.91	3.73	38.1
1’’	½’’	33.4	21.3	1.65	1.65	2.77	2.11	3.38	2.77	4.55	3.73	50.8
1’’	¾’’	33.4	26.7	1.65	1.65	2.77	2.11	3.38	2.87	4.55	3.91	50.8
1 ¼’’	1’’	42.2	33.4	1.65	1.65	2.77	2.77	3.56	3.38	4.85	4.55	50.8
1 ½’’	½’’	48.3	21.3	1.65	1.65	2.77	2.11	3.68	2.77	5.08	3.73	63.5
1 ½’’	¾’’	48.3	26.7	1.65	1.65	2.77	2.11	3.68	2.87	5.08	3.91	63.5
1 ½’’	1’’	48.3	33.4	1.65	1.65	2.77	2.77	3.68	3.38	5.08	4.55	63.5
1 ½’’	1 ¼’’	48.3	42.2	1.65	1.65	2.77	2.77	3.68	3.56	5.08	4.85	63.5
2’’	¾’’	60.3	26.7	1.65	1.65	2.77	2.11	3.91	2.87	5.54	3.91	76.2
2’’	1’’	60.3	33.4	1.65	1.65	2.77	2.77	3.91	3.38	5.54	4.55	76.2
2’’	1 ¼’’	60.3	42.2	1.65	1.65	2.77	2.77	3.91	3.56	5.54	4.85	76.2
2’’	1 ½’’	60.3	48.3	1.65	1.65	2.77	2.77	3.91	3.68	5.54	5.08	76.2
2 ½’’	1’’	73.0	33.4	2.11	1.65	3.05	2.77	5.16	3.38	7.01	4.55	88.9
2 ½’’	1 ¼’’	73.0	42.2	2.11	1.65	3.05	2.77	5.16	3.56	7.01	4.85	88.9
2 ½’’	1 ½’’	73.0	48.3	2.11	1.65	3.05	2.77	5.16	3.68	7.01	5.08	88.9
2 ½’’	2’’	73.0	60.3	2.11	1.65	3.05	2.77	5.16	3.91	7.01	5.54	88.9
3’’	1’’	88.9	33.4	2.11	1.65	3.05	2.77	5.49	7.62	4.55	88.9	88.9
3’’	1 ¼’’	88.9	42.2	2.11	1.65	3.05	2.77	5.49	7.62	4.85	88.9	88.9
3’’	1 ½’’	88.9	48.3	2.11	1.65	3.05	2.77	5.49	7.62	5.08	88.9	88.9
3’’	2’’	88.9	60.3	2.11	1.65	3.05	2.77	5.49	7.62	5.54	88.9	88.9
3’’	2 ½’’	88.9	73.0	2.11	2.11	3.05	3.05	5.49	7.62	7.01	88.9	88.9
4’’	1 ½’’	114.3	48.3	2.11	1.65	3.05	2.77	6.02	8.56	5.08	101.6	101.6
4’’	2’’	114.3	60.3	2.11	1.65	3.05	2.77	6.02	8.56	5.54	101.6	101.6
4’’	2 ½’’	114.3	73.0	2.11	2.11	3.05	3.05	6.02	8.56	7.01	101.6	101.6
4’’	3’’	114.3	88.9	2.11	2.11	3.05	3.05	6.02	8.56	7.62	101.6	101.6
5’’	3’’	141.3	88.9	2.77	2.11	3.40	3.05	6.55	9.53	7.62	127.0	127.0
5’’	4’’	141.3	114.3	2.77	2.11	3.40	3.05	6.55	9.53	8.56	127.0	127.0
6’’	2 ½’’	168.3	73.0	2.77	2.11	3.40	3.05	7.11	10.97	7.01	139.7	139.7
6’’	3’’	168.3	88.9	2.77	2.11	3.40	3.05	7.11	10.97	7.62	139.7	139.7
6’’	4’’	168.3	114.3	2.77	2.11	3.40	3.05	7.11	10.97	8.56	139.7	139.7
6’’	5’’	168.3	141.3	2.77	2.77	3.40	3.40	7.11	10.97	9.53	139.7	139.7
8’’	4’’	219.1	114.3	2.77	2.11	3.76	3.05	8.18	12.7	8.56	152.4	152.4
8’’	5’’	219.1	141.3	2.77	2.77	3.76	3.40	8.18	12.7	9.53	152.4	152.4
8’’	6’’	219.1	168.3	2.77	2.77	3.76	3.40	8.18	12.7	10.97	152.4	152.4
10’’	5’’	273.1	141.3	2.77	2.77	4.19	3.40	9.27	12.7	9.53	177.8	177.8
10’’	6’’	273.1	168.3	3.40	2.77	4.19	3.40	9.27	12.7	10.97	177.8	177.8
10’’	8’’	273.1	219.1	3.40	2.77	4.19	3.76	9.27	12.7	12.7	177.8	177.8
12’’	6’’	323.9	168.3	3.40	2.77	4.57	3.40	9.53	12.7	10.97	203.2	203.2
12’’	8’’	323.9	219.1	3.96	2.77	4.57	3.76	9.53	12.7	12.7	203.2	203.2
12’’	10’’	323.9	273.1	3.96	3.40	4.57	4.19	9.53	12.7	12.7	203.2	203.2

14” – 48”

ASME B16.9 stainless steel reducer dimension chart, sizing from 14'' to 48''.

Outside Diameter 1		Outside Diameter 2		Thickness(mm)								Length H (mm)
Outside Diameter 1		Outside Diameter 2		SCH 10S		SCH 20S		Std		XS
Inch	mm	Inch	mm	T1	T2	T1	T2	T1	T2	T1	T2
14’’	12’’	355.6	323.9	4.78	4.57	7.92	6.35	9.53	9.53	12.7	12.7	330.2
14’’	10’’	355.6	273.1	4.78	4.19	7.92	6.35	9.53	9.27	12.7	12.7	330.2
14’’	8’’	355.6	219.1	4.78	3.76	7.92	6.35	9.53	8.18	12.7	12.7	330.2
14’’	6’’	355.6	168.3	4.78	3.40	7.92	–	9.53	7.11	12.7	10.97	330.2
16’’	14’’	406.4	355.6	4.78	4.78	7.92	7.92	9.53	9.53	12.7	12.7	355.6
16’’	12’’	406.4	323.9	4.78	4.57	7.92	6.35	9.53	9.53	12.7	12.7	355.6
16’’	10’’	406.4	273.1	4.78	4.19	7.92	6.35	9.53	9.27	12.7	12.7	355.6
16’’	8’’	406.4	219.1	4.78	3.76	7.92	6.35	9.53	8.18	12.7	12.7	355.6
18’’	16’’	457.2	406.4	4.78	4.78	7.92	7.92	9.53	9.53	12.7	12.7	381.0
18’’	14’’	457.2	355.6	4.78	4.78	7.92	7.92	9.53	9.53	12.7	12.7	381.0
18’’	12’’	457.2	323.9	4.78	4.57	7.92	6.35	9.53	9.53	12.7	12.7	381.0
18’’	10’’	457.2	273.1	4.78	4.19	7.92	6.35	9.53	9.27	12.7	12.7	381.0
20’’	18’’	508	457.2	5.54	4.78	9.53	7.92	9.53	9.53	12.7	12.7	508.0
20’’	16’’	508	406.4	5.54	4.78	9.53	7.92	9.53	9.53	12.7	12.7	508.0
20’’	14’’	508	355.6	5.54	4.78	9.53	7.92	9.53	9.53	12.7	12.7	508.0
20’’	12’’	508	323.9	5.54	4.57	9.53	6.35	9.53	9.53	12.7	12.7	508.0
22’’	20’’	558.8	508	5.54	5.54	9.53	9.53	9.53	9.53	12.7	12.7	508.0
22’’	18’’	558.8	457.2	5.54	4.78	9.53	7.92	9.53	9.53	12.7	12.7	508.0
22’’	16’’	558.8	406.4	5.54	4.78	9.53	7.92	9.53	9.53	12.7	12.7	508.0
22’’	14’’	558.8	355.6	5.54	4.78	9.53	7.92	9.53	9.53	12.7	12.7	508.0
24’’	22’’	609.6	558.8	6.35	5.54	9.53	9.53	9.53	9.53	12.7	12.7	508.0
24’’	20’’	609.6	508	6.35	5.54	9.53	9.53	9.53	9.53	12.7	12.7	508.0
24’’	18’’	609.6	457.2	6.35	4.78	9.53	7.92	9.53	9.53	12.7	12.7	508.0
24’’	16’’	609.6	406.4	6.35	4.78	9.53	7.92	9.53	9.53	12.7	12.7	508.0
24’’	14’’	609.6	355.6	6.35	4.78	9.53	7.92	9.53	9.53	12.7	12.7	508.0
26’’	24’’	660.4	609.6			12.7	9.53	9.53	9.53	12.7	12.7	609.6
26’’	20’’	660.4	508			12.7	9.53	9.53	9.53	12.7	12.7	609.6
26’’	18’’	660.4	457.2			12.7	7.92	9.53	9.53	12.7	12.7	609.6
26’’	16’’	660.4	406.4			12.7	7.92	9.53	9.53	12.7	12.7	609.6
28’’	26’’	711.2	660.4			12.7	12.7	9.53	9.53	12.7	12.7	609.6
28’’	24’’	711.2	609.6			12.7	9.53	9.53	9.53	12.7	12.7	609.6
28’’	20’’	711.2	508			12.7	9.53	9.53	9.53	12.7	12.7	609.6
28’’	18’’	711.2	457.2			12.7	7.92	9.53	9.53	12.7	12.7	609.6
30’’	28’’	762.0	711.2			12.7	12.7	9.53	9.53	12.7	12.7	609.6
30’’	26’’	762.0	660.4			12.7	12.7	9.53	9.53	12.7	12.7	609.6
30’’	24’’	762.0	609.6			12.7	9.53	9.53	9.53	12.7	12.7	609.6
30’’	20’’	762.0	508			12.7	9.53	9.53	9.53	12.7	12.7	609.6
32’’	30’’	812.8	762.0			12.7	12.7	9.53	9.53	12.7	12.7	609.6
32’’	28’’	812.8	711.2			12.7	12.7	9.53	9.53	12.7	12.7	609.6
32’’	26’’	812.8	660.4			12.7	12.7	9.53	9.53	12.7	12.7	609.6
32’’	24’’	812.8	609.6			12.7	9.53	9.53	9.53	12.7	12.7	609.6
34’’	863.6	32’’	812.8			12.7	12.7	9.53	9.53	12.7	12.7	609.6
34’’	863.6	30’’	762.0			12.7	12.7	9.53	9.53	12.7	12.7	609.6
34’’	863.6	28’’	711.2			12.7	12.7	9.53	9.53	12.7	12.7	609.6
34’’	863.6	26’’	660.4			12.7	12.7	9.53	9.53	12.7	12.7	609.6
36’’	914.4	34’’	863.6			12.7	12.7	9.53	9.53	12.7	12.7	609.6
36’’	914.4	32’’	812.8			12.7	12.7	9.53	9.53	12.7	12.7	609.6
36’’	914.4	30’’	762.0			12.7	12.7	9.53	9.53	12.7	12.7	609.6
36’’	914.4	28’’	711.2			12.7	12.7	9.53	9.53	12.7	12.7	609.6
38’’	965.2	36’’	914.4					9.53	9.53	12.7	12.7	609.6
38’’	965.2	34’’	863.6					9.53	9.53	12.7	12.7	609.6
38’’	965.2	32’’	812.8					9.53	9.53	12.7	12.7	609.6
38’’	965.2	30’’	762.0					9.53	9.53	12.7	12.7	609.6
38’’	965.2	28’’	711.2					9.53	9.53	12.7	12.7	609.6
38’’	965.2	26’’	660.4					9.53	9.53	12.7	12.7	609.6
40’’	1016	38’’	965.2					9.53	9.53	12.7	12.7	609.6
40’’	1016	36’’	914.4					9.53	9.53	12.7	12.7	609.6
40’’	1016	34’’	863.6					9.53	9.53	12.7	12.7	609.6
40’’	1016	32’’	812.8					9.53	9.53	12.7	12.7	609.6
40’’	1016	30’’	762.0					9.53	9.53	12.7	12.7	609.6
42’’	1066.8	40’’	1016			12.7	9.53	9.53	9.53	12.7	12.7	609.6
42’’	1066.8	38’’	965.2			12.7	9.53	9.53	9.53	12.7	12.7	609.6
42’’	1066.8	36’’	914.4			12.7	12.7	9.53	9.53	12.7	12.7	609.6
42’’	1066.8	34’’	863.6			12.7	12.7	9.53	9.53	12.7	12.7	609.6
42’’	1066.8	32’’	812.8					9.53	9.53	12.7	12.7	609.6
42’’	1066.8	30’’	762.0					9.53	9.53	12.7	12.7	609.6
44’’	1117.6	42’’	1066.8					9.53	9.53	12.7	12.7	609.6
44’’	1117.6	40’’	1016					9.53	9.53	12.7	12.7	609.6
44’’	1117.6	38’’	965.2					9.53	9.53	12.7	12.7	609.6
44’’	1117.6	36’’	914.4					9.53	9.53	12.7	12.7	609.6
46’’	1168.4	44’’	1117.6					9.53	9.53	12.7	12.7	711.2
46’’	1168.4	42’’	1066.8					9.53	9.53	12.7	12.7	711.2
46’’	1168.4	40’’	1016					9.53	9.53	12.7	12.7	711.2
46’’	1168.4	38’’	965.2					9.53	9.53	12.7	12.7	711.2
46’’	1168.4	36’’	914.4					9.53	9.53	12.7	12.7	711.2
48’’	1219.2	44’’	1117.6					9.53	9.53	12.7	12.7	711.2
48’’	1219.2	42’’	1066.8					9.53	9.53	12.7	12.7	711.2
48’’	1219.2	40’’	1016					9.53	9.53	12.7	12.7	711.2

Why Choose Concentric Reducer from
S&S Stainless?

As a leading stainless steel fittings supplier, S&S Stainless International offers premium stainless steel concentric reducers that ensure smooth, efficient flow transitions in any piping system. Built for durability and corrosion resistance, our stainless steel concentric reducer is engineered to withstand harsh industrial environments while delivering reliable performance.

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