A carbon steel reducer is a pipe fitting used to connect two pipes of different diameters. It facilitates a smooth transition in the flow of fluids between pipes of varying sizes, maintaining optimal pressure and flow characteristics. The reducer is a vital component in a piping system, often utilized in industries such as oil and gas, chemical, water treatment, and construction.
Material Grade | – A106 Grade B |
– A234 WPB | |
– A105 | |
Nominal Pipe Size (NPS) | – Ranges from NPS 1/2 to NPS 48 (or more) |
Outside Diameter (OD) | – Varies based on NPS size (e.g., NPS 4 has an OD of 4.5 inches / 114.3 mm) |
Wall Thickness | – Sch 10, Sch 40, Sch 80, Sch 160, Sch XXS (extra strong) |
Pressure Rating | – Typically 150 to 2500 psi, dependent on size and material grade |
Temperature Range | – Commonly rated up to 400°C (752°F), but some special alloys may handle higher temperatures |
End Type | – Butt Weld |
– Socket Weld | |
– Threaded | |
– Flanged | |
Reducer Type | – Concentric |
– Eccentric | |
Tolerance | – Tolerances typically ±1/8 inch or ±0.2 mm (depends on manufacturer and pipe grade) |
Test Requirements | – Hydrostatic Test |
– Pneumatic Test | |
– Ultrasonic Test (for material integrity) | |
Surface Finish | – Plain (mill finish) |
– Galvanized | |
– Painted (for corrosion resistance) | |
Length of Reducer | – Standard length varies from 4 to 12 inches (custom lengths available upon request) |
Coating Options | – Zinc coating, epoxy coating, or painting for corrosion protection |
Certifications | – ISO 9001 certified, CE marking, API certifications (where applicable) |
Material Compatibility | – Suitable for use with oil, gas, water, chemicals, steam, and other fluids in industrial applications |
Weight | – Varies by size and wall thickness (e.g., for NPS 4, weight may be approximately 8-10 kg) |
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
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