background

Stainless Steel Reducer

ASTM A403 Eccentric/ Concentric Reducers Manufacturer in India

Stainless Steel Reducer

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 Reducer manufacturer in India and we produce a wide range of stainless steel pipe fittings. The reducer is useful to reduce the pipe size in a piping.

The ASTM A403 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. 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 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.

Table of contents

Standard Specification of ASTM A403 Reducer

Stainless Steel Reducer Specification

Stainless steel reducer sizes

Stainless steel reducer sizes

  • 3/4 to 48 inch
  • DN15 to DN1500
SS pipe reducer ASTM standard

SS pipe reducer ASTM standard

  • ASTM A403 
  • ASME SA403 
ASME SA403 stainless steel pipe reducer schedule

ASME SA403 stainless steel pipe reducer schedule

  • SCH 10 to SCH 160
  • Custom
ASTM A403 Concentric Reducer manufacturing technique

ASTM A403 Concentric Reducer manufacturing technique

  • Hot forming
  • Mandrel
Stainless steel bushing reducer type

Stainless steel bushing reducer type

  • Welded
  • Seamless
  • Fabricated
Requirements meet

Requirements meet

  • NACE MR0175
  • MTC EN 10204 3.1/3.2
  • ISO 15156
  • Sour service
  • NACE MR0103
  • NACE TM-0284 
Stainless steel tube reducer surface finish

Stainless steel tube reducer surface finish

  • Transparent oil
  • Hot galvanized
  • Rust-proof black oil
ASTM A403 threaded pipe reducer type

ASTM A403 threaded pipe reducer type

  • Seamless
  • Welded
  • Eccentric 
  • Concentric 
Types of SA403 reducer

Types of SA403 reducer

  • Stainless steel buttweld reducer
  • SS concentric reducer
  • ASTM A403 eccentric reducer
Testing methods of SS Welded Eccentric Reducer

Testing methods of SS Welded Eccentric Reducer

  • Magnetic Particle Examination
  • HIC tested
  • Ultrasonic test
  • PMI test
SS Seamless Eccentric Reducer bending method

SS Seamless Eccentric Reducer bending method

  • Rotary Draw
  • Hot Induction
  • Ram-Type
  • Mandrel
  • Roll
Dimensions standard of high performance stainless steel eccentric reducer

Dimensions standard of high performance stainless steel eccentric reducer

  • ASME B16.9
  • ASME 16.28
  • BS4504
  • MSS-SP-43
  • BS4504
  • MSS SP-75
  • BS10
  • BS1560
Stainless Welded Concentric Reducer Packaging

Stainless Welded Concentric Reducer Packaging

  • Carton Box
  • Wooden Pallet
  • Custom as per buyer choice
  • Wooden Cases
Stainless steel bushing reducer test certificates

Stainless steel bushing reducer test certificates

  • Raw Materials Certificate
  • Third Party Inspection
  • 100% Radiography
SS Eccentric Reducer Class

SS Eccentric Reducer Class 

  • 150#
  • 300#
  • 600#
  • 2000 #
  • 3000 #
  • 6000 #
  • 9000 #

Stainless steel concentric reducer manufacturers offers class 150 to 90000

ASTM A403 Concentric Reducer Grades

ASTM A403 Concentric Reducer Grades


SS Reducer Price List

Description Price Per Piece in USA $ Price Per Piece in UAE Dirham
ASME SA 403 DN 50 x 40 Sch 40 Eccentric Reducer USA $ 71.84 AED 263.88
1.5 x 1 SS Seamless Concentric Reducer USA $ 1.12 AED 4.12

Buy Stainless Steel Pipe Reducer and ASME SA403 Concentric Reducers at Best Price in Mumbai, Check Sizes

Stainless Steel Pipe Reducer Size Chart

Stainless Steel Reducer Size Chart

Stainless Steel Pipe Reducers NPS Lenth
H		 Outside Daimeter
D1		 Outside Daimeter
D
3/4-1/2 38 21.3 26.7
1-1/2 51 21.3 33.4
1-3/4 51 26.7 33.4
1¼-1/2 51 21.3 42.2
1¼-3/4 51 26.7 42.2
1¼-1 51 33.4 42.2
1½-1/2 64 21.3 48.3
1½-3/4 64 26.7 48.3
1½-1 64 33.4 48.3
1½-1¼ 64 42.2 48.3
2-3/4 76 26.7 60.3
2-1 76 33.4 60.3
2-1¼ 76 42.2 60.3
2-1½ 76 48.3 60.3

Supplier of ASTM A403 Buttweld Reducer, Stock Dimension Range From 1/2 to 48 Inch, View Weight Chart

Stainless Steel Reducer Weight Chart

Nominal Pipe Size Kg Lbs
1-1/2 0.34 0.75
1-3/4 0.36 0.8
1 1/4-1 0.45 1
1 1/4-1/2 0.45 1
1 1/4-3/4 0.45 1
1 1/2 -1 1/4 0.68 1.5
1 1/2 -3/4 0.63 1.38
1 1/2 -1/2 0.57 1.25
1 1/2 -1 0.68 1.5
2-1 1/4 1.02 2.25
2-1 0.98 2.15
2-1 1/2 1.08 2.38
2-3/4 0.91 2
2 1/2 -2 1.81 4
2 1/2 -1 1/2 1.77 3.9
2 1/2 -1 1/4 1.63 3.6
2 1/2 -1 1.59 3.5
3-2 1/2 2.72 6
3-2 2.27 5
3-1 1/4 2.15 4.75
3 1/2 -3 3.63 8
3-1 1/2 2.22 4.9
3 1/2 -2 1/2 3.63 8
3 1/2 -1 1/2 3.18 7
3 1/2 -2 3.18 7
3 1/2 -1 1/4 3.18 7
4-3 1/2 4.08 9
4-3 4.08 9
4-2 1/2 3.86 8.5
4-2 3.74 8.25
4-1 1/2 3.63 8
5-4 7.26 16
5-3 1/2 6.8 15
5-3 6.58 14.5
5-2 1/2 6.24 13.75
5-2 6.35 14
6-5 10.43 23
6-4 9.98 22
6-3 1/2 9.53 21
6-3 9.07 20
6-2 1/2 8.62 19
8-6 16.33 36
8-5 15.88 35
8-4 14.97 33
8-3 1/2 14.51 32

Common Types Of Stainless Steel Reducer

Stainless Steel Eccentric Reducer

Stainless Steel Eccentric Reducer

ASTM A403 Bell Reducer

ASTM A403 Bell Reducer

ASME SA403 Seamless Eccentric Reducer

ASME SA403 Seamless Eccentric Reducer

Stainless Welded Eccentric Reducing

Stainless Welded Eccentric Reducing

SS Seamless Concentric Reducer

SS Seamless Concentric Reducer

stainless Steel Concentric Reducer

stainless Steel Concentric Reducer

ASTM A403 Welded Concentric Reducing

ASTM A403 Welded Concentric Reducing

Stainless Steel Buttweld Reducer

Stainless Steel Buttweld Reducer


Chemical Properties of SS Concentric Reducer

Grade C Mn Si P S Cr Ni Fe
304 0.08 2.00 1.00 0.045 0.03 18 To 20 8 To 10.5 Balance
304L 0.03 2.00 1.00 0.045 0.03 18 To 20 8 To 12 Balance
304H 0.04-0.10 2 1 0.045 0.03 18 To 20 8 To 12 Balance

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

ASTM A403 reducer Mechanical Characteristics

Grade 304L 304 304H
Density 8 8 8
Melting Range 1400 ℃ 1400 ℃ 1400 ℃
Elongation 40 40 40
Tensile Strength 485 515 515
Yield Strength 170 205 205
Hardness 201 201 201

Equivalent Properties of SS Concentric Reducers

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

SS eccentric and concentric reducer features

  • high performance
  • high productivity
  • really believable
  • fast delivery
Stockist of SS Eccentric Reducer as Per ASME B16.9 Dimensional Standards

Dimension of Stainless Steel Eccentric Reducer

Dimension of Stainless Steel Eccentric Reducer

Size in Inch B A C
3/4 * 1/2 12.70 19.05 26
1 * 1/2 12.70 25.40 39
1 * 3/4 19.05 25.40 25
1.1/2 * 1 25.40 38.10 36
2 * 1 25.40 50.80 67
2 * 1.1/2 38.10 50.80 34
2.1/2 * 1.1/2 38.10 63.50 68
2.1/2 * 2 50.80 63.50 40
3 * 2 50.80 76.20 48
3 * 2.1/2 63.50 76.20 44
4 * 2 50.80 101.60 100
4 * 2.1/2 63.50 101.60 70
4 * 3 76.20 101.60 78

Stainless Steel Concentric Reducer Dimension Chart

Stainless Steel Concentric Reducer Dimension Chart

Size in Inch B A C
3/4 * 1/2 12.70 19.05 25.5
1 * 1/2 12.70 25.40 43
1 * 3/4 19.05 25.40 30
1.1/2 * 1 25.40 38.10 32
2 * 1 25.40 50.80 51
2 * 1.1/2 38.10 50.80 67
2.1/2 * 1.1/2 38.10 63.50 45
2.1/2 * 2 50.80 63.50 66
3 * 1.1/2 38.10 76.20 76
3 * 2 50.80 76.20 71
3 * 2.1/2 63.50 76.20 73
4 * 2 50.80 101.60 102
4 * 2.1/2 63.50 101.60 77
4 * 3 76.20 101.60 51

Dimension Tolerance of Stainless steel Metric Reducers

Nominal Pipe Size 1/2 to 2.1/2 4 3 to 3.1/2 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 26 to 30 20 to 24 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 + 6.4
– 4.8		 4.8 + 6.4
– 4.8
Overall Length (H) 2 5 2 5
Wall Thickness (t) Not less than 87.5% of Nominal Wall Thickness

ASTM A403 Top and Bottom Flat Eccentric Reducer in Schedule 5S to 160

Thickness Chart of SS ASME B16.9 Reducer

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

Weight of ASTM A403 Eccentric Reducer schedule STD

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

SS eccentric vs concentric reducer

Feature Concentric Eccentric
Shape Symmetric Asymmetric
Fluid Flow more turbulence minimal disturbance
Purpose maintaining consistent of fluid flow maintaining top or bottom pipe level
Cost less expensive more expensive
Pressure Handling Distributes pressure evenly across the pipe diameter Handles pressure better due to flat side against the bottom of the pipe
Examples of Use Oil and gas pipelines Drainage systems
Installation More forgiving Requires precise alignment

Weight of SCH 160 Stainless Steel Reducer

Nominal Pipe Size Kgs Lbs
3/4-3/8 0.11 0.24
3/4-1/2 0.13 0.28
1-3/4 0.23 0.5
1 1/4 -1 0.29 0.65
1-1/2 0.23 0.5
1 1/4 -3/4 0.29 0.65
1 1/2 -1 1/4 0.43 0.95
1 1/4 -1/2 0.27 0.6
1 1/2 -3/4 0.34 0.75
1 1/2 -1/2 0.33 0.73
2-1 1/2 0.73 1.6
1 1/2 -1 0.36 0.8
2-1 1/4 0.68 1.5
2-1 0.68 1.5
2 1/2 -2 1.13 2.5
2-3/4 0.66 1.45
2 1/2 -1 1/2 1.02 2.25
2 1/2 -1 1/4 1.02 2.25
3-2 1/2 1.68 3.7
3-2 1.54 3.4
2 1/2 -1 1 2.2
3-1 1/2 1.45 3.2
3 1/2 -3 - -
3 1/2 -2 1/2 - -
3-1 1/4 1.41 3.1
3 1/2 -2 - -
3 1/2 -1 1/4 - -
4-3 1/2 - -
3 1/2 -1 1/2 - -
4-3 2.9 6.4
4-2 1/2 2.49 5.5
4-2 2.45 5.4
4-1 1/2 2.38 5.25
5-4 5.67 12.5
5-3 1/2 - -
5-3 4.99 11
5-2 1/2 4.76 10.5
5-2 4.54 10
6-5 8.5 18.75
6-4 7.48 16.5
6-3 1/2 - -
6-3 7.03 15.5
6-2 1/2 6.8 15
8-6 14.06 31
8-5 12.34 27.2
8-4 10.66 23.5
8-3 1/2 - -
10-6 24.49 54
10-8 26.08 57.5
10-5 23.59 52
10-4 22.68 50
12-10 43.54 96
12-8 39.46 87
12-6 37.65 83
12-5 36.29 80

SS reducer Manufacturing Process

Outer Die Method

SS reducer Manufacturing Process

Pressure Rating of ASME B16.9 SS Reducer

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

SS Reducer Hsn Code

HSN Code Description
73072900 Stainless Steel Reducer