A stainless steel reducer is a critical component in piping systems, designed to connect pipes of different diameters seamlessly. These reducers are utilized across various industries, including oil and gas, chemical processing, power generation, water treatment, and more. With their robust properties, stainless steel reducers ensure reliable performance under challenging conditions such as high pressure, extreme temperatures, and corrosive environments.
There are two main types of stainless steel reducers:
Concentric Reducer: Symmetrical and primarily used in vertical piping systems.
Eccentric Reducer: Asymmetrical and commonly used in horizontal piping systems to avoid air accumulation.
Concentric Reducer
Eccentric Reducer
NOMINAL PIPE SIZE OUTSIDE DIAMETER END TO END
Inch D P H
3/4 x 1/2 26.7 21.3 38
3/4 x 3/8 26.7 17.1 38
1 x 3/4 33.4 26.7 51
1 x 1/2 33.4 21.3 51
1 1/4 x 1 42.2 33.4 51
1 1/4 x 3/4 42.2 26.7 51
1 1/4 x 1/2 42.2 21.3 51
1 1/2 x 1 1/2 48.3 42.2 64
1 1/2 x 1 48.3 33.4 64
1 1/2 x 3/4 48.3 26.7 64
1 1/2 x 1/2 48.3 21.3 64
2 x 1 1/2 60.3 48.2 76
2 x 1 1/4 60.3 42.2 76
2 x 1 60.3 33.4 76
2 x 3/4 60.3 26.7 76
2 1/2 x 2 73 60.3 89
2 1/2 x 1 1/2 73 48.3 89
2 1/2 x 1 1/4 73 42.2 89
2 1/2 x 1 73 33.4 89
3 x 2 1/2 88.9 73 89
3 x 2 88.9 60.3 89
3 x 1 1/2 88.9 48.3 89
3 x 1 1/4 88.9 42.2 89
3 1/2 x 3 101.6 88.9 102
3 1/2 x 21/2 101.6 73 102
3 1/2 x 2 101.6 60.3 102
3 1/2 x 1 1/2 101.6 48.3 102
3 1/2 x 1 1/4 101.6 42.2 102
4 x 3 1/2 114.3 101.6 102
4 x 3 114.3 88.9 102
4 x 2 1/2 114.3 73 102
4 x 2 114.3 60.3 102
4 x 1 1/2 114.3 48.3 102
5 x 4 141.3 114.3 127
5 x 3 1/2 141.3 101.6 127
5 x 3 141.3 88.9 127
5 x 2 1/2 141.3 73 127
5 x 2 141.3 60.3 127
6 x 5 168.3 141.3 140
6 x 4 168.3 114.3 140
6 x 3 1/2 168.3 101.6 140
6 x 3 168.3 88.9 140
6 x 2 1/2 168.3 73 140
8 x 6 219.1 168.3 152
8 x 5 219.1 141.3 152
8 x 4 219.1 114.3 152
8 x 3 1/2 219.1 101.6 152
10 x 8 273.1 219.1 178
10 x 6 273.1 168.1 178
10 x 5 273.1 141.3 178
10 x 4 273.1 114.3 178
12 x 10 323.9 273.1 203
12 x 8 323.9 219.1 203
12 x 6 323.9 168.3 203
12 x 5 323.9 141.3 203
14 x 12 355.6 323.9 330
14 x 10 355.6 273.1 330
14 x 8 355.6 219.1 330
14 x 6 355.6 168.3 330
16 x 14 406.4 355.6 356
16 x 12 406.4 323.9 356
16 x 10 406.4 273.1 356
16 x 8 406.4 219.1 356
16 x 6 406.4 168.3 356
18 x 16 457 406.4 381
18 x 14 457 355.6 381
18 x 12 457 323.9 381
18 x 10 457 273.1 381
18 x 8 457 219.1 381
20 x 18 508 457 508
20 x 16 508 406.4 508
20 x 14 508 355.6 508
20 x 12 508 323.9 508
20 x 10 508 273.1 508
20 x 8 508 219.1 508
22 x 20 559 508 508
22 x 18 559 457 508
22 x 16 559 406.4 508
22 x 14 559 355.6 508
22 x 12 559 323.9 508
24 x 10 559 273.1 508
24 x 22 610 559 508
24 x 20 610 508 508
24 x 18 610 457 508
24 x 16 610 406.4 508
24 x 14 610 355.6 508
24 x 12 610 323.9 508
24 x 10 610 273.1 508
Nominal Pipe Size (NPS) Schedule 40 Schedule 80 Schedule 160
1/2″ 1.0 1.3 1.8
3/4″ 1.4 1.8 2.5
1″ 1.8 2.4 3.2
1 1/4″ 2.3 3.0 4.0
1 1/2″ 3.0 4.1 5.5
2″ 4.2 6.2 8.3
2 1/2″ 6.7 9.8 13.0
3″ 9.4 14.1 18.7
4″ 14.5 21.6 28.8
5″ 19.0 28.3 37.7
6″ 24.0 36.0 48.0
8″ 34.0 51.0 68.0
10″ 47.5 71.0 94.0
12″ 60.0 90.0 120.0
14″ 75.0 112.0 150.0
16″ 94.0 141.0 188.0
18″ 114.0 171.0 228.0
20″ 134.0 201.0 268.0
24″ 170.0 255.0 340.0
30″ 255.0 382.5 510.0
36″ 335.0 502.5 670.0
42″ 420.0 630.0 840.0
48″ 510.0 765.0 1020.0
Run x Branch Schedule 40 (lbs) Schedule 80 (lbs) Schedule 160 (lbs)
1/2″ x 3/8″ 0.3 0.4 0.6
3/4″ x 1/2″ 0.6 0.9 1.2
1″ x 3/4″ 0.8 1.2 1.6
1 1/4″ x 1″ 1.0 1.5 2.0
1 1/2″ x 1″ 1.2 1.8 2.5
2″ x 1 1/2″ 1.8 2.7 3.6
2 1/2″ x 2″ 2.5 3.8 5.1
3″ x 2″ 3.5 5.3 7.0
3″ x 2 1/2″ 3.8 5.7 7.6
4″ x 3″ 5.5 8.3 11.0
5″ x 4″ 7.3 10.9 14.4
6″ x 4″ 9.5 14.2 18.9
6″ x 5″ 10.1 15.1 20.2
8″ x 6″ 15.5 23.3 31.1
10″ x 8″ 21.0 31.5 42.0
12″ x 10″ 28.0 42.0 56.0
14″ x 12″ 36.0 54.0 72.0
16″ x 12″ 44.0 66.0 88.0
18″ x 16″ 56.0 84.0 112.0
20″ x 16″ 68.0 102.0 136.0
24″ x 20″ 96.0 144.0 192.0
24″ x 10″ 80.0 120.0 160.0
Austenitic Stainless Steel: Grades such as 304, 304L, 316, and 316L offer excellent corrosion resistance, weldability, and versatility.
Duplex Stainless Steel: Grades like 2205 and 2507 provide superior strength and resistance to stress corrosion cracking.
Martensitic Stainless Steel: Grades such as 410 and 420 offer good mechanical strength and moderate corrosion resistance.
Ferritic Stainless Steel: Grades such as 430 and 446 are cost-effective options with decent corrosion resistance in non-critical applications.
Property | Specification |
Material Standard | ASTM A403, ASTM A815, EN 10253 |
Size Range | 1/2″ to 48″ |
Wall Thickness | SCH 10 to SCH XXS |
Connection Ends | Butt-weld, Socket-weld, Threaded |
Manufacturing Processes | Seamless, Welded, Fabricated |
Dimensional Standard | ASME B16.9, MSS SP-43 |
Surface Finish | Pickled, Sandblasted, Polished |
Pressure Rating | Class 150, 300, 600, 900, 1500 |
Temperature Range | –20°C to +800°C |
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