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| Place of Origin | China |
| Brand Name | Kasugai |
| Model Number | ASTM A403 WP304/L WP316/L WP310S WP321 B16.9 Con/Ecc Reducer |
| Document | Product Brochure PDF |
ASTM A403 WP304/L WP316/L WP310S WP321 B16.9 Stainless Steel Con/ Ecc Reducer
Reducer is used to connect two pipes of different size in a piping system. One end of the reducer corresponds to the diameter of the large diameter pipe and the other end of the Concentric Reducer corresponds to the diameter of the small diameter pipe.
Concentric Reducer is a type of reducer used in piping systems. It has a cone shape to allow gradual change in pressure rather than a sudden shift. This feature of the Concentric Reducer makes it applicable in high pressure fluid flow systems where there is a risk of breaking under high pressure.
The Eccentric Reducer is an odd shape. It has expansion in its body only on one side of the length of it. The other side of the length remains parallel to the pipes. This makes it easy to align and handle in specific locations. Eccentric Reducer is also effective as the concentric ones but is more specific in needs. SCH 40 WPB reducer indicates the nominal pipe size in Schedule 40.
Product Information
| Product Name | ASTM A403 B16.9 Stainless Steel Concentric / Eccentric Reducer |
| Size Range | 1/2” to 48” |
| Wall Thickness | SCH5S SCH10S SCH40S SCH 80S SCH160S XS XXS |
| Standards | ASTM A234 |
| Grade | WP304/L WP316/L WP310S WP321 |
| Manufacturing Standards | ASME B16.9 |
ASME B16.9 Concentric / Eccentric Reducer Dimensions (mm)
The reducers are often used when the piping designers want to reduce the diameter of a straight run of pipe. There are two styles of standard reducers available in ASME B16.9: Concentric – having a common centerline; Eccentric reducer – having offset centerlines.
| NPS | O.D L mm inch |
O.D S mm inch |
H mm inch |
| 3/4 x 1/2 | 26.7 1.05 |
21.3 0.84 |
38 1.50 |
| 3/4 x 3/8 | 26.7 1.05 |
17.3 0.68 |
38 1.50 |
| 1 x 3/4 | 33.4 1.32 |
26.7 1.05 |
51 2.00 |
| 1 x 1/2 | 33.4 1.32 |
21.3 0.84 |
51 2.00 |
| 1-1/4 x 1 | 42.2 1.66 |
33.4 1.32 |
51 2.00 |
| 1-1/4 x 3/4 | 42.2 1.66 |
26.7 1.05 |
51 2.00 |
| 1-1/4 x 1/2 | 42.2 1.66 |
21.3 0.84 |
51 2.00 |
| 1-1/2 x 1-1/4 | 48.3 1.90 |
42.2 1.66 |
64 2.50 |
| 1-1/2 x 1 | 48.3 1.90 |
33.4 1.32 |
64 2.50 |
| 1-1/2 x 3/4 | 48.3 1.90 |
26.7 1.05 |
64 2.50 |
| 1-1/2 x 1/2 | 48.3 1.90 |
21.3 0.84 |
64 2.50 |
| 2 x 1-1/2 | 60.3 2.38 |
48.3 1.90 |
76 3.00 |
| 2 x 1-1/4 | 60.3 2.38 |
42.2 1.66 |
76 3.00 |
| 2 x 1 | 60.3 2.38 |
33.4 1.32 |
76 3.00 |
| 2 x 3/4 | 60.3 2.38 |
26.7 1.05 |
76 3.00 |
| 2-1/2 x 2 | 73.0 2.88 |
60.3 2.38 |
89 3.50 |
| 2-1/2 x 1-1/2 | 73.0 2.88 |
48.3 1.90 |
89 3.50 |
| 2-1/2 x 1-1/4 | 73.0 2.88 |
42.2 1.66 |
89 3.50 |
| 2-1/2 x 1 | 73.0 2.88 |
33.4 1.32 |
89 3.50 |
| 3 x 2-1/2 | 88.9 3.50 |
73.0 2.88 |
89 3.50 |
| 3 x 2 | 88.9 3.50 |
60.3 2.38 |
89 3.50 |
| 3 x 1-1/2 | 88.9 3.50 |
48.3 1.90 |
89 3.50 |
| 3 x 1-1/4 | 88.9 3.50 |
42.2 1.66 |
89 3.50 |
| 3-1/2 x 3 | 101.6 4.00 |
88.9 3.50 |
102 4.00 |
| 3-1/2 x 2-1/2 | 101.6 4.00 |
73.0 2.88 |
102 4.00 |
| 3-1/2 x 2 | 101.6 4.00 |
60.3 2.38 |
102 4.00 |
| 3-1/2 x 1-1/2 | 101.6 4.00 |
48.3 1.90 |
102 4.00 |
| 3-1/2 x 1-1/4 | 101.6 4.00 |
42.2 1.66 |
102 4.00 |
| 4 x 3-1/2 | 114.3 4.50 |
101.6 4.00 |
102 4.00 |
| 4 x 3 | 114.3 4.50 |
88.9 3.50 |
102 4.00 |
| 4 x 2-1/2 | 114.3 4.50 |
73.0 2.88 |
102 4.00 |
| 4 x 2 | 114.3 4.50 |
60.3 2.38 |
102 4.00 |
| 4 x 1-1/2 | 114.3 4.50 |
48.3 1.90 |
102 4.00 |
| 5 x 4 | 141.3 5.56 |
114.3 4.50 |
127 5.00 |
| 5 x 3-1/2 | 141.3 5.56 |
101.6 4.00 |
127 5.00 |
| 5 x 3 | 141.3 5.56 |
88.9 3.50 |
127 5.00 |
| 5 x 2-1/2 | 141.3 5.56 |
73.0 2.88 |
127 5.00 |
| 5 x 2 | 141.3 5.56 |
60.3 2.38 |
127 5.00 |
| 6 x 5 | 168.3 6.62 |
141.3 5.56 |
140 5.50 |
| 6 x 4 | 168.3 6.62 |
114.3 4.50 |
140 5.50 |
| 6 x 3-1/2 | 168.3 6.62 |
101.6 4.00 |
140 5.50 |
| 6 x 3 | 168.3 6.62 |
88.9 3.50 |
140 5.50 |
| 6 x 2-1/2 | 168.3 6.62 |
73.0 2.88 |
140 5.50 |
| 8 x 6 | 219.1 8.62 |
168.3 6.62 |
152 6.00 |
| 8 x 5 | 219.1 8.62 |
141.3 5.56 |
152 6.00 |
| 8 x 4 | 219.1 8.62 |
114.3 4.50 |
152 6.00 |
| 8 x 3-1/2 | 219.1 8.62 |
101.6 4.00 |
152 6.00 |
| 10 x 8 | 273.0 10.75 |
219.1 8.62 |
178 7.00 |
| 10 x 6 | 273.0 10.75 |
168.3 6.62 |
178 7.00 |
| 10 x 5 | 273.0 10.75 |
141.3 5.56 |
178 7.00 |
| 10 x 4 | 273.0 10.75 |
114.3 4.50 |
178 7.00 |
| 12 x 10 | 323.8 12.75 |
273.0 10.75 |
203 8.00 |
| 12 x 8 | 323.8 12.75 |
219.1 8.62 |
203 8.00 |
| 12 x 6 | 323.8 12.75 |
168.3 6.62 |
203 8.00 |
| 12 x 5 | 323.8 12.75 |
141.3 5.56 |
203 8.00 |
| 14 x 12 | 355.6 14.00 |
323.8 12.75 |
330 13.00 |
| 14 x 10 | 355.6 14.00 |
273.0 10.75 |
330 13.00 |
| 14 x 8 | 355.6 14.00 |
219.1 8.62 |
330 13.00 |
| 14 x 6 | 355.6 14.00 |
168.3 6.62 |
330 13.00 |
| 16 x 14 | 406.4 16.00 |
355.6 14.00 |
356 14.00 |
| 16 x 12 | 406.4 16.00 |
323.8 12.75 |
356 14.00 |
| 16 x 10 | 406.4 16.00 |
273.0 10.75 |
356 14.00 |
| 16 x 8 | 406.4 16.00 |
219.1 8.62 |
356 14.00 |
| 18 x 16 | 457 18.00 |
406.4 16.00 |
381 15.00 |
| 18 x 14 | 457 18.00 |
355.6 14.00 |
381 15.00 |
| 18 x 12 | 457 18.00 |
323.8 12.75 |
381 15.00 |
| 18 x 10 | 457 18.00 |
273.0 10.75 |
381 15.00 |
| 20 x 18 | 508 20.00 |
457 18.00 |
508 20.00 |
| 20 x 16 | 508 20.00 |
406.4 16.00 |
508 20.00 |
| 20 x 14 | 508 20.00 |
355.6 14.00 |
508 20.00 |
| 20 x 12 | 508 20.00 |
323.8 12.75 |
508 20.00 |
| 22 x 20 | 559 22.00 |
508 20.00 |
508 20.00 |
| 22 x 18 | 559 22.00 |
457 18.00 |
508 20.00 |
| 22 x 16 | 559 22.00 |
406.4 16.00 |
508 20.00 |
| 22 x 14 | 559 22.00 |
355.6 14.00 |
508 20.00 |
| 24 x 22 | 610 24.00 |
559 22.00 |
508 20.00 |
| 24 x 20 | 610 24.00 |
508 20.00 |
508 20.00 |
| 24 x 18 | 610 24.00 |
457 18.00 |
508 20.00 |
| 24 x 16 | 610 24.00 |
406.4 16.00 |
508 20.00 |
| 26 x 24 | 660 26.00 |
610 24.00 |
610 24.00 |
| 26 x 22 | 660 26.00 |
559 22.00 |
610 24.00 |
| 26 x 20 | 660 26.00 |
508 20.00 |
610 24.00 |
| 26 x 18 | 660 26.00 |
457 18.00 |
610 24.00 |
| 28 x 26 | 711 28.00 |
660 26.00 |
610 24.00 |
| 28 x 24 | 711 28.00 |
610 24.00 |
610 24.00 |
| 28 x 20 | 711 28.00 |
508 20.00 |
610 24.00 |
| 28 x 18 | 711 28.00 |
457 18.00 |
610 24.00 |
| 30 x 28 | 762 30.00 |
711 28.00 |
610 24.00 |
| 30 x 26 | 762 30.00 |
660 26.00 |
610 24.00 |
| 30 x 24 | 762 30.00 |
610 24.00 |
610 24.00 |
| 30 x 20 | 762 30.00 |
508 20.00 |
610 24.00 |
| 32 x 30 | 813 32.00 |
762 30.00 |
610 24.00 |
| 32 x 28 | 813 32.00 |
711 28.00 |
610 24.00 |
| 32 x 26 | 813 32.00 |
660 26.00 |
610 24.00 |
| 32 x 24 | 813 32.00 |
610 24.00 |
610 24.00 |
| 34 x 32 | 864 34.00 |
813 32.00 |
610 24.00 |
| 34 x 30 | 864 34.00 |
762 30.00 |
610 24.00 |
| 34 x 26 | 864 34.00 |
660 26.00 |
610 24.00 |
| 34 x 24 | 864 34.00 |
610 24.00 |
610 24.00 |
| 36 x 34 | 914 36.00 |
864 34.00 |
610 24.00 |
| 36 x 32 | 914 36.00 |
813 32.00 |
610 24.00 |
| 36 x 30 | 914 36.00 |
762 30.00 |
610 24.00 |
| 36 x 26 | 914 36.00 |
660 26.00 |
610 24.00 |
| 36 x 24 | 914 36.00 |
610 24.00 |
610 24.00 |
| 38 x 36 | 965 38.00 |
914 36.00 |
610 24.00 |
| 38 x 34 | 965 38.00 |
864 34.00 |
610 24.00 |
| 38 x 32 | 965 38.00 |
813 32.00 |
610 24.00 |
| 38 x 30 | 965 38.00 |
762 30.00 |
610 24.00 |
| 38 x 28 | 965 38.00 |
711 28.00 |
610 24.00 |
| 38 x 26 | 965 38.00 |
660 26.00 |
610 24.00 |
| 40 x 38 | 1016 40.00 |
965 38.00 |
610 24.00 |
| 40 x 36 | 1016 40.00 |
914 36.00 |
610 24.00 |
| 40 x 34 | 1016 40.00 |
864 34.00 |
610 24.00 |
| 40 x 32 | 1016 40.00 |
813 32.00 |
610 24.00 |
| 40 x 30 | 1016 40.00 |
762 30.00 |
610 24.00 |
| 42 x 40 | 1067 42.00 |
1016 40.00 |
610 24.00 |
| 42 x 38 | 1067 42.00 |
965 38.00 |
610 24.00 |
| 42 x 36 | 1067 42.00 |
914 36.00 |
610 24.00 |
| 42 x 34 | 1067 42.00 |
864 34.00 |
610 24.00 |
| 42 x 32 | 1067 42.00 |
813 32.00 |
610 24.00 |
| 42 x 30 | 1067 42.00 |
711 28.00 |
610 24.00 |
| 44 x 42 | 1118 44.00 |
1067 42.00 |
610 24.00 |
| 44 x 40 | 1118 44.00 |
1016 40.00 |
610 24.00 |
| 44 x 38 | 1118 44.00 |
965 38.00 |
610 24.00 |
| 44 x 36 | 1118 44.00 |
914 36.00 |
610 24.00 |
| 46 x 44 | 1168 46.00 |
1118 44.00 |
711 28.00 |
| 46 x 42 | 1168 46.00 |
1067 42.00 |
711 28.00 |
| 46 x 40 | 1168 46.00 |
1016 40.00 |
711 28.00 |
| 46 x 38 | 1168 46.00 |
965 38.00 |
711 28.00 |
| 48 x 46 | 1219 48.00 |
1168 46.00 |
711 28.00 |
| 48 x 44 | 1219 48.00 |
1118 44.00 |
711 28.00 |
| 48 x 42 | 1219 48.00 |
1067 42.00 |
711 28.00 |
| 48 x 40 | 1219 48.00 |
1016 40.00 |
711 28.00 |
*NPS: Nominal Pipe Size; O.D L: Outside Diameter at Bevel, large end; O.D S: Outside Diameter at Bevel, small end; H: Center-to-End.
Materials Chemical Compositions
ASTM A403 Stainless Steel Pipe Fittings refers to the material of forged and rolled austenitic stainless fittings for pressure pipes. Common grades are WP304/L, WP316/L. They can be used into many fields as engineering industry, energy conversion plants etc
| Grade A | Composition (%) | |||||||||
| Grade WP | UNS Designation | C | Mn | P | S | Si | Ni | Cr | Mo | Ti |
| WP304 | S30400 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 8.0-11.0 | 18.0-22.0 | ﹍ | ﹍ |
| WP304L | S30403 | 0.030E | 2.00 | 0.045 | 0.030 | 1.00 | 8.0-12.0 | 18.0-22.0 | ﹍ | ﹍ |
| WP310S | S31008 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 19.0-22.0 | 24.0-26.0 | ﹍ | ﹍ |
| WP316 | S31600 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 10.0-14.0 | 16.0-18.0 | 2.00-3.00 | |
| WP316L | S31603 | 0.030E | 2.00 | 0.045 | 0.030 | 1.00 | 10.0-14.0 | 16.0-18.0 | 2.00-3.00 | ﹍ |
| WP321 | S32100 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 9.0-12.0 | 17.0-19.0 | ﹍ | G |
Note:
Where a ellipsis(﹍)appears in the table, there is no requirement and the element need to be analyzed for or reported
The method of analysis for nitrogen shall be a matter of agreement between the purchaser and manufacturer
Columbium 0.10-0.30%; Vanadium 0.10-0.30%.
For small diameter or thin walls, or both, where many drawing passes are required, a carbon maximum of 0.04% is necessary in grades TP304L and TP316L. Small outside diameter tubes are defined as those less than 0.500in.(23.7mm) in outside diameter and light wall tubes as those less than 0.049in.(1.24mm) in average wall thickness
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