Concentric and Eccentric Reducers

A Pipe Reducer is a kind of industrial pipe fittings used to connect two pipes (or tubes) of different diameters. It contains concentric reducer and eccentric reducer. The former is used on vertical pipes, and the latter is used for horizontal pipes.

Pipe reducers are mainly used in the following areas:
1. Pipe reducer is useful when there is a requirement on change of fluid flow rate.
2. It is used for pump inlet to prevent cavitation.
3. It is fit for the connectors of instruments, such as flowmeter and control valve.

Size
Seamless Pipe Reducer: 1/2″~32″ DN15~DN800
Welding Pipe Reducer:6″~60″ DN150~DN1500
Wall Thickness
sch10, sch20, sch30, std, sch40, sch60, xs, sch80, sch100,
sch120, sch140, sch160, xxs, sch5s, sch20s, sch40s, sch80s
Max. thickness: 200mm

Materials
Carbon steel: ASTM/ASME A234 WPB-WPC
Alloy steel: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911
Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N
ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti
ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H
Low temperature steel: ASTM/ASME A402 WPL 3-WPL 6
High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70

Standards
GB/T12459-2005 GB/T13401-2005 GB/T10752-2005
SH/T3408-1996 SH/T3409-1996
SY/T0609-2006 SY/T0518-2002 SY/T0510-1998
DL/T695-1999 GD2000 GD87-1101
HG/T21635-1987 HG/T21631-1990
ASME B16.9-2007 ASME B16.25-2007
MSS SP 75-2008 MSS SP 43-2008
CSA Z245.11-05-2005
EN10253-1-1999 EN10253-2-2007 EN10253-3-2008 EN10253-4-2008
DIN2616-1-1991 DIN2616-2-1991
BS1640-1-1962 BS1640-2-1962 BS1640-3-1968 BS1640-4-1968 BS1965-1-1963
GOST17378-2001
AFNOR NF A 49-289-1990 AFNOR NF A 49-170-1-1999 AFNOR NF A 49-170-2-2009 AFNOR NF A 49-170-3-2009 AFNOR NF A 49-170-4-2009
ISO3419-1981 ISO5251-1981
JIS B2311-2009 JIS B2312-2009 JIS B2313-2009

Industrial Processes
Bending, squeezing, pressing, forging, machining and more

Industries Served
Our pipe reducers have found many applications in a wide range of industries, such as electricity, petroleum, natural gas, chemical, shipbuilding, heating, papermaking, metallurgy and so on.

Specifications for Pipe Tee

Specifications for Pipe Reducer

Pipe Reducer	Production range
	Seamless pipe reducer	Welding pipe reducer
Outside diameter	1/2″~32″	6″~60″
Wall thickness	4mm~200mm
Product type	Concentric reducer, eccentric reducer

 

Concentric and Eccentric Reducers

Nominal Pipe (NPS) Size Outside Diameter at Bevel End-to-end Large End Small End 3/4 x 1/2 26.7 21.3 38.1 3/4 x 3/8 17.3 1 x 3/4 33.4 26.7 50.8 1 x 1/2 21.3 1-1/4 x 1 42.2 33.4 50.8 1-1/4 x 3/4 26.7 1-1/4 x 1/2 21.3 1-1/2 x 1-1/4 48.3 42.2 63.5 1-1/2 x 1 33.4 1-1/2 x 3/4 26.7 1-1/2 x 1/2 21.3 2 x 1-1/2 60.3 48.3 76.2 2 x 1-1/4 42.2 2 x 1 33.4 2 x 3/4 26.7 2-1/2 x 2 73.0 60.3 88.9 2-1/2 x 1-1/2 48.3 2-1/2 x 1-1/4 42.2 2-1/2 x 1 33.4 3 x 2-1/2 88.9 73.0 88.9 3 x 2 60.3 3 x 1-1/2 48.3 3 x 1-1/4 42.2 3-1/2 x 3 101.6 88.9 101.6 3-1/2 x 2-1/2 73.0 3-1/2 x 2 60.3 3-1/2 x 1-1/2 48.3 3-1/2 x 1-1/4 42.2 4 x 3-1/2 114.3 101.6 101.6 4 x 3 88.9 4 x 2-1/2 73.0 4 x 2 60.3 4 x 1-1/2 48.3 5 x 4 141.3 114.3 127.0 5 x 3-1/2 101.6 5 x 3 88.9 5 x 2-1/2 73.0 5 x 2 60.3 6 x 5 168.3 141.3 139.7 6 x 4 114.3 6 x 3-1/2 101.6 6 x 3 88.9 6 x 2-1/2 73.0	Nominal Pipe (NPS) Size Outside Diameter at Bevel   End-to-end Large End Small End 8 x 6 219.1 168.3 152.4 8 x 5 141.3 8 x 4 114.3 8 x 3-1/2 101.6 8 x 3 88.9 8 x 2-1/2 73.0 10 x 8 273.1 29.1 177.8 10 x 6 168.3 10 x 5 141.3 10 x 4 114.3 12 x 10 323.9 273.1 203.2 12 x 8 219.1 12 x 6 168.3 12 x 5 141.3 14 x 12 355.6 323.9 330.2 14 x 10 273.1 14 x 8 219.1 14 x 6 168.3 16 x 14 406.4 355.6 355.6 16 x 12 323.9 16 x 10 273.1 16 x 8 219.1 18 x 16 457.2 406.4 381.0 18 x 14 355.6 18 x 12 323.9 18 x 10 273.1 18 x 8 219.1 20 x 18 508.0 457.2 508.0 20 x 16 406.4 20 x 14 355.6 20 x 12 323.9 20 x 10 273.0 22 x 20 558.8 508.0 508.0 22 x 18 457.2 22 x 16 406.4 22 x 14 355.6 22 x 12 323.8 24 x 22 609.6 558.8 508.0 24 x 20 508.0 24 x 18 457.2 24 x 16 406.4 24 x 16 355.6 24 x 16 323.8
Nominal Pipe Size (NPS) Outside Diameter at Bevel End-to-end Large End Small End 26 x 24 660.4 609.6 609.6 26 x 22 558.8 26 x 20 508.0 26 x 18 457.2 26 x 16 406.4 26 x 14 355.6 28 x 26 711.2 660.4 609.6 28 x 24 609.6 28 x 22 559.0 28 x 20 508.0 28 x 18 457.2 28 x 16 406.4 28 x 14 355.6 30 x 28 762.0 711.2 609.6 30 x 26 660.4 30 x 24 609.6 30 x 22 559.0 30 x 20 508.0 30 x 18 457.0 30 x 16 406.4 30 x 14 355.6 32 x 30 813.0 762.0 609.6 32 x 28 711.0 32 x 26 660.0 32 x 24 610.0 32 x 22 559.0 32 x 20 508.0 34 x 32 863.6 812.8 609.6 34 x 30 762.0 34 x 28 711.0 34 x 26 711.2 34 x 24 660.4 34 x 22 559.0 36 x 34 914.0 864.0 609.6 36 x 32 813.0 36 x 30 762.0 36 x 28 711.0 36 x 26 660.0 36 x 24 610.0 36 x 22 559.0 38 x 36 965.0 914.0 609.6 38 x 34 864.0 38 x 32 813.0 38 x 30 762.0 38 x 28 711.0 38 x 26 660.0 38 x 24 610.0	Outside Diameter at Bevel Nominal Pipe Size (NPS) End-to-end Large End Small End 40 x 38 1016.0 965.0 609.6 40 x 36 914.0 40 x 34 864.0 40 x 32 813.0 40 x 30 762.0 40 x 28 711.0 42 x 40 1067.0 1016.0 609.6 42 x 38 965.0 42 x 36 914.4 42 x 34 863.6 42 x 32 812.8 42 x 30 762.0 42 x 28 711.0 44 x 42 1117.6 1066.8 609.6 44 x 40 1016.0 44 x 38 965.2 44 x 36 914.4 44 x 34 864.0 44 x 32 813.0 46 x 44 1168.4 1117.6 711.2 46 x 42 1066.8 46 x 40 1016.0 46 x 38 965.2 46 x 36 914.0 46 x 34 864.0 48 x 46 1219.2 1168.4 711.2 48 x 44 1117.6 48 x 42 1066.8 48 x 40 1016.0 48 x 38 965.0 48 x 36 914.0 52 x 48 1321.0 1219.0 711.2 52 x 46 1168.0 52 x 44 1118.0 52 x 42 1067.0 52 x 40 1016.0 56 x 52 1422.0 1321.0 711.2 56 x 48 1219.0 56 x 44 1118.0 52 x 40 1016.0 60 x 56 1524.0 1422.0 711.2 60 x 52 1321.0 60 x 48 1219.0 60 x 44 1118.0