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Stainless Steel Pipe reducer

ASME B16.9 Eccentric Reducer, Check ASME B16.9 Concentric Reducer Dimensions

Stainless steel products are very common in various industries to avoid corrosion and to provide long lasting components. Great Steel & Metals is a leading Stainless Steel Pipe Reducer Fittings Manufacturer and we produce a wide range of stainless steel pipe fittings. The reducer is useful to reduce the pipe size in a piping.

Stainless Steel Pipe reducer

Stainless Steel Pipe reducer

ASME B16.9 Eccentric Reducer

ASME B16.9 Eccentric Reducer

SS Seamless Concentric Reducer

SS Seamless Concentric Reducer


Stainless Steel Pipe Reducer, SS Seamless Concentric Reducer, 304 Stainless Steel Reducer

The ASTM A403 Stainless Steel Exhaust Pipe Reducer is made up of an austenitic stainless steel that is forged and rolled. So it can withstand high pressure and temperature in the exhaust functionality. There are different types of reducers. The Stainless Steel Eccentric Pipe Reducer has an asymmetric shape so that it aligns the larger and smaller pipes to one side of the pipe line; not in the center of axis. There are different classes and standards of this product. The ASME B16.9 Buttweld Reducer is buttweld, which means it is very strong at the connection.

Stainless Steel Pipe reducer

Table of contents

What is Stainless Steel Pipe reducer?

It also covers nominal sizes from NPS ½ to NPS 48. These are used in small to medium size pipes. Depending on the need of the application, we produce eccentric reducers as well. The eccentric reducers have their diameters aligned to the center. So the 316 Ss Concentric Reducer doesn’t change the axis of flow. This is important in high pressure and high speed fluid flow systems not to interrupt the direction of flow and to keep less friction on the walls. We produce different SS Buttweld Pipe Reducer Dimensions according to our customer needs. Any customization could be arranged upon contacting us.


Standard Specification of ASME B16.9 Eccentric Reducer

Materials 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) / Seamless / ERW / Welded / Fabricated
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
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″NB TO 48″NB IN / 1/2” TO 36”, (SEAMLESS UPTO 24”), (WELDED 8” TO 36” )

Material Grade of UNS S30400 Steel Flanged Reducers

Stainless Steel Buttweld Concentric Reducer
ASTM A403 WP316/316L, ASTM A403 SA / A 774 WP-S, WP-W, WP-WX 304/304L, ASTM A182 F316L, 304L, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404

Huge stock of SS 304 Concentric Reducer, SS 304L Straight Pipe Reducer, Stainless steel 316 Socket Weld Reducer, Grade SS 316 Threaded Eccentric Reducer Manufacturer in Mumbai, India


Equivalent Properties of SS 304L Straight Pipe Reducer

Type UNS JIS EN/DIN EN/BS EN/NF ISO GB GOST
304 S30400 SUS304 X5CrNi18-10 304S31 Z7CN18.09 11 0Cr18Ni9 08KH18H10
304L S30403 SUS304L X2CrNi19-11 304S11 X2CrNi19-11 10 00Cr19Ni11 03KH18H11

316 S31600 SUS316 X5CrNiMo17-12-2 316S31 Z7CND17-12-2 20 0Cr17Ni12Mo2 08KH17H13M2T
316L S31603 SUS316L X2CrNiMo18-14-3 316S13 X2CrNiMo17-12-2 19 00Cr17Ni14Mo2 03KH17H14M2

Wide Range Of Stainless steel 316 Socket Weld Reducer

Buttweld Concentric Reducer Butt Weld Pipe Reducers
ASME B16.9 Butt weld Concentric Reducer Steel Reducer Pipe Fittings
Stainless Steel Concentric Reducer SS Concentric Reducers
ANSI B16.9 Buttweld Concentric Reducer ASME B16.28 Buttweld Concentric Pipe Reducer
Welded Butt weld Concentric Reducer Seamless Butt weld Concentric Reducer
Carbon Steel Concentric Reducer High Quality Concentric Reducer
ASTM A403 Stainless Steel Concentric Reducers Stainless Steel Pipe reducer

Exporter of Stainless steel 316L Reducers Pipe Fitting, SS 316L ASME B16.9 Reducer, suppliers of 304 Stainless steel Metric Reducers & UNS S30400 Steel Flanged Reducer, 304L Stainless steel Butt Weld Concentric Reducer Pressure Rating


Dimension of Grade SS 316 Threaded Eccentric Reducer

Reducers concentric and eccentric ASME B16.9

NPS O.D.
D		 O.D.
D1		 Len
H
3/4-1/2 26.7 21.3 38
1-1/2 33.4 21.3 51
1-3/4 33.4 26.7 51
1.1/4-1/2 42.2 21.3 51
1.1/4-3/4 42.2 26.7 51
1.1/4-1 42.2 33.4 51
1.1/2-1/2 48.3 21.3 64
1.1/2-3/4 48.3 26.7 64
1.1/2-1 48.3 33.4 64
1.1/2-1.1/4 48.3 42.2 64
2-3/4 60.3 26.7 76
2-1 60.3 33.4 76
2-1.1/4 60.3 42.2 76
2-1.1/2 60.3 48.3 76

Reducers concentric and eccentric ASME B16.9

NPS O.D.
D		 O.D.
D1		 Len
H
2.1/2-1 73 33.4 89
2.1/2-1.1/4 73 42.2 89
2.1/2-1.1/2 73 48.3 89
2.1/2-2 73 60.3 89
3-1.1/4 88.9 42.2 89
3-1.1/2 88.9 48.3 89
3-2 88.9 60.3 89
3-2.1/2 88.9 73 89
3.1/2-1.1/4 101.6 42.2 102
3.1/2-1.1/2 101.6 48.3 102
3.1/2-2 101.6 60.3 102
3.1/2-2.1/2 101.6 73 102
3.1/2-3 101.6 88.9 102
4-1.1/2 114.3 48.3 102
4-2 114.3 60.3 102
4-2.1/2 114.3 73 102
4-3 114.3 88.9 102
4-3.1/2 114.3 101.6 102
5-2 141.3 60.3 127
5-2.1/2 141.3 73 127
5-3 141.3 88.9 127
5-3.1/2 141.3 101.6 127
5-4 141.3 114.3 127
6-2.1/2 168.3 73 140
6-3 168.3 88.9 140
6-3.1/2 168.3 101.6 140
6-4 168.3 114.3 140
6-5 168.3 141.3 140

Dimension Tolerance of 304 Stainless steel Metric Reducers

Nominal Pipe Size 1/2 to 2.1/2 3 to 3.1/2 4 5 to 8
Outside Diameter
at Bevel (D)		 + 1.6
– 0.8		 1.6 1.6 + 2.4
– 1.6
Inside Diameter at End 0.8 1.6 1.6 1.6
Overall Length (H) 2 2 2 2
Nominal Pipe Size 10 to 18 20 to 24 26 to 30 32 to 48
Outside Diameter
at Bevel (D)		 + 4
– 3.2		 + 6.4
– 4.8		 + 6.4
– 4.8		 + 6.4
– 4.8
Inside Diameter at End 3.2 4.8 + 6.4
– 4.8		 + 6.4
– 4.8
Overall Length (H) 2 2 5 5
Wall Thickness (t) Not less than 87.5% of Nominal Wall Thickness

Thickness Chart of SS 316L ASME B16.9 Reducer

Nominal Size SCH20 STD SCH40S SCH80S SCH120 SCH160
DN NPS
15 1/2 0.08 0.08 0.1
20 3/4 0.17 0.17 0.2
25 1 0.21 0.21 0.25 0.22
32 1 1/4 0.29 0.29 0.35
40 1 1/2 0.42 0.42 0.58 0.6
50 2 0.8 0.8 1.03 1.04
65 2 1/2 1.05 1.05 1.42 1.65
80 3 1.36 1.36 1.9
90 3 1/2 1.63 1.63 2.27 2.4
100 4 2.77 2.77 3.93 4.4
125 5 3.96 3.96 6 7.14
150 6 6.31 6.31 9.26 10.8
200 8 7.85 10.7 10.7 17.5 15 18.4
250 10 11.2 15.8 16.3 25.1 25.1 32.5
300 12 25.6 28.8 32.1 56.5 41.7 53.3
350 14 30.5 38.5 48.8 79 84.5 106
400 16 35.2 44.5 64.3 102 112 143
450 18 62.7 62.7 98.5 165
500 20 72.6 72.6 181
550 22 97 79.1 142 226
600 24 130 100

Properties of SS Seamless Concentric Reducer

Ni C MN P S SI CR MO TI N
316 11.0 – 14.0 0.08 max 2.0 max 0.045 max 0.30 max 1.0 max 16.0 – 18.0 2.0 – 3.0
316L 10.0 – 14.0 0.035 max 2.0 max 0.045 max 0.30 max 1.0 max 16.0 – 18.0 2.0 – 3.0
316TI 10.0 – 14.0 0.08 max 2.0 max 0.045 max 0.30 max 0.75 max 16.0 – 18.0 2.0 – 3.0 5x(C+N) – 0.70 0.10 max

Manufacturing Standards of ASTM B16.9 SS Reducer

ASME: ANSI B16.9, ANSI B16.28, MSS-SP-43
DIN: DIN2605,
DIN2615, DIN2616, DIN2617, DIN28011
EN: EN10253-1, EN10253-2

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

Common Types Of 304 Stainless Steel Reducer

1 x 3/4 in. Butt Weld Schedule 10 316L Stainless Steel Eccentric Reducer

1 x 3/4 in. Butt Weld Schedule 10 316L Stainless Steel Eccentric Reducer

1-1/2 x 1/2 in. Butt Weld 316L Stainless Steel Concentric Reducer

1-1/2 x 1/2 in. Butt Weld 316L Stainless Steel Concentric Reducer

450 3 x 2 in. Schedule 10S 304L Stainless Steel Concentric Reducer

450 3 x 2 in. Schedule 10S 304L Stainless Steel Concentric Reducer

1-1/4 x 1 in. Schedule 10 Eccentric 304L Stainless Steel Reducer

1-1/4 x 1 in. Schedule 10 Eccentric 304L Stainless Steel Reducer

1-1/2 x 1 in. Butt Weld Schedule 40 316L Stainless Steel Eccentric Reducer

1-1/2 x 1 in. Butt Weld Schedule 40 316L Stainless Steel Eccentric Reducer

14 x 12 in. Schedule 10S 304L Stainless Steel Concentric Reducer

14 x 12 in. Schedule 10S 304L Stainless Steel Concentric Reducer

4 x 3 in. Schedule 10 Eccentric 304L Stainless Steel Reducer

4 x 3 in. Schedule 10 Eccentric 304L Stainless Steel Reducer

3 x 1-1/4 in. Schedule 40 Concentric 316L Stainless Steel Reducer

3 x 1-1/4 in. Schedule 40 Concentric 316L Stainless Steel Reducer


Chemical Properties of SS 304 Concentric Reducer

Chemical Composition %
C Mn Si P S Cr Ni Fe
304 0.08 max. 2.00 max. 1.00 max. 0.045 max. 0.03 max. 18.0 – 20.0 8.0 – 10.5 Balance
304L 0.03 max. 2.00 max. 1.00 max. 0.045 max. 0.03 max. 18.0 – 20.0 8.0 – 12.0 Balance
304H 0.04-0.10 2.00 max. 1.00 max. 0.045 max. 0.03 max. 18.0 – 20.0 8.0 – 12.0 Balance

Ni C MN P S SI CR MO TI N
316 11.0 – 14.0 0.08 max 2.0 max 0.045 max 0.30 max 1.0 max 16.0 – 18.0 2.0 – 3.0
316L 10.0 – 14.0 0.035 max 2.0 max 0.045 max 0.30 max 1.0 max 16.0 – 18.0 2.0 – 3.0
316TI 10.0 – 14.0 0.08 max 2.0 max 0.045 max 0.30 max 0.75 max 16.0 – 18.0 2.0 – 3.0 5x(C+N) – 0.70 0.10 max