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A234 WPB Eccentric Reducer

ASTM A234 WPB Eccentric Reducers are pipe fittings used to connect two pipes of different diameters, with the centerline of one pipe being offset from the other.

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ASTM A234 WPB Eccentric Reducers are pipe fittings used to connect two pipes of different diameters, with the centerline of one pipe being offset from the other. This creates an asymmetrical reduction in pipe diameter, which is useful in systems where it is necessary to maintain a specific flow direction or prevent air pockets. Eccentric reducers are commonly used in pipelines where the fluid is being drained and helps in preventing cavitation or air build-up in the system.

The ASTM A234 WPB Eccentric Reducer plays a crucial role in maintaining proper fluid dynamics in pipeline systems, especially in horizontal flows. It is ideal for applications where air buildup needs to be avoided, ensuring safe and efficient fluid transport.

BW Eccentric Reducer Fitting Specifcation

Size Range 3/4″ – 60″ / DN20 – 1500
Thickness Schedule SCH 10 – SCH 80, SCH 160, XXS
America Standard ANSI / ASME B16.9 / MSS SP 43
Japan Standard JIS B2311/2312/2313
Germany Standard DIN2605/2615/2616/2617
Europe Standard EN10253
Carbon Steel Q235, 20#, 35#, 45#, 20G,ASTM A234 WPB/WPC
Low Temp Carbon Steel Q345B, 16Mn, ASTM A420 WPL6
Pipeline Steel ASTM A860 WPHY 42 / 46 / 56 / 60 / 65
Alloy Steel ASTM A234 WP11 / WP12 / WP 5 / WP9 / WP91 / WP92,

15CrMoG, 12Cr1MoVG, 12Cr5Mo, 1Cr5Mo, Cr9Mo, 10CrMo910, 12CrMo4-5

Stainless Steel ASTM A403 WP304/304L/304H, 316/316L, 310S, 317, 347, 904L

ASME B16.9 Eccentric Reducer Dimensions

OD1 OD2 END TO END
NPS NPS H
3/4 3/8 – 1/2 38
1 1/2 – 3/4 51
1 1/4 1/2 – 1 51
1 1/2 1/2 – 1 1/4 64
2 3/4 – 1 1/2 76
2 1/2 1 – 2 89
3 1 1/4 – 2 1/2 102
4 2 – 3 1/2 102
5 2 – 4 127
6 2 1/2 – 5 140
8 3 1/2 – 6 152
10 4 – 8 178
12 5 – 10 203
14 6 – 12 330
16 6 – 14 356
18 8 – 16 381
20 10 – 18 508
22 12 – 20 508
24 12 – 22 508
26 12 – 24 610
28 14 – 26 610
30 14 – 28 610
32 20 – 30 610
34 22 – 32 610
36 22 – 34 610
38 24 – 36 610
40 28 – 38 610
42 28 – 40 610
44 32 – 42 610
46 34 – 44 711
48 36 – 46 711
52 40 – 48 711
56 40 – 52 711
60 44 – 56 711

Oil and gas industry
In the Christmas tree part of the oil well, carbon steel eccentric reducers can be used to connect oil pipes of different diameters. Due to the complex environment of the oil well, there are certain pressure and temperature changes and possible corrosive media. Carbon steel can better adapt to this environment and ensure the integrity and safety of the pipeline system.
During the long-distance transportation of natural gas, the pipeline will pass through different terrains and equipment connection points. Carbon steel eccentric reducers can be used to connect large-diameter pipelines of the trunk line and small-diameter pipelines of the branch line.
Chemical industry
In chemical production, various chemical raw materials need to be transported between different equipment and pipelines. Since different production links may require pipelines of different diameters, carbon steel eccentric reducers become important components for connecting these pipelines of different diameters.

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