pipe reducer
Pipe reducer is the component in a pipeline to reduce the pipe size from a larger to a smaller bore. Pipe reducer is used either as nozzle or diffuser depending on the mach number of the flow. Meanwhile reducer allows for a change in pipe size to meet hydraulic flow requirements of the system or to adapt existing piping of a different size. Pipe reducer is usually concentric but eccentric reducers are used when required to maintain the same top or bottom of pipe level.
Size: Up to 16” N.B. all schedules
Size range: 1/2 to 56 inches (DN15 to DN1400)
Pressure: SCH5 to SCH160
Standard: ANSI B16.9 / 16.28, ASTM A53/A106, API 5L,ASTM/ASME SA234
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
Low temperature steel: ASTM/ASME A402 WPL 3-WPL 6
High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70
Pipe reducers can be in various shapes.
Some of the common shapes are hemispherical, oval, square, rectangular, U shape and I shape.
Based on different materials, pipe reducers include carbon steel reducer, stainless steel reducer, and alloy steel reducer etc.
Depending on their construction, pipe reducers contain threaded reducer, tapered reducer and anti-roll reducer etc.
Concentric Reducer
Eccentric Reducer
Stainless Reducer
Low Pressure Concertric Reducer
ASME B16.9 Concentric Pipe Reducers Dimensions Tolerances:
Nominal Pipe Size (NPS) | Outside Ø at Bevel | Inside Ø at End |
Wall Thickness t / t1 |
Overall Length H |
---|---|---|---|---|
1/2 a 2 1/2 | 1 | 0,8 | Not | 2 |
3 a 3 1/2 | 1 | 1,6 | less | 2 |
4 | +2 -1 | 1,6 | than | 2 |
5 a 6 | +3 -1 | 1,6 | 87,50% | 2 |
8 | 2 | 1,6 | of nominal | 2 |
10 | +4 -3 | 3,2 | tickness | 2 |
12 a 18 | +4 -3 | 3,2 | - | 3 |
20 a 24 | +6 -5 | 4,8 | - | 3 |
26 a 30 | +7 -5 | 4,8 | - | 3 |
32 a 48 | +7 -5 | 4,8 | - | 5 |
ASME B16.9 Concentric Pipe Reducers Dimensions:
Nominal Diameter(mm) |
Outside Diameter(mm) | |||
---|---|---|---|---|
inches | mm | D | d | H |
3/4 x 3/4 | 20 x 15 | 26,67 | 21,34 | 38,10 |
3/4 x 3/8 | 20 x 10 | 26,67 | 17,14 | 38,10 |
1 x 3/4 | 25 x 20 | 33,40 | 26,67 | 50,80 |
1 x 1/2 | 25 x 15 | 33,40 | 21,34 | 50,80 |
1 1/4 x 1 | 32 x 25 | 42,16 | 33,40 | 50,80 |
1 1/4 x 3/4 | 32 x 20 | 42,16 | 26,67 | 50,80 |
1 1/4 x 1/2 | 32 x 15 | 42,16 | 21,34 | 50,80 |
1 1/2 x 1 1/4 | 40 x 32 | 48,26 | 42,16 | 63,50 |
1 1/2 x 1 | 40 x 25 | 48,26 | 33,40 | 63,50 |
1 1/2 x 3/4 | 40 x 20 | 48,26 | 26,67 | 63,50 |
1 1/2 x 1/2 | 40 x 15 | 48,26 | 21,34 | 63,50 |
2 x 1 1/2 | 50 x 40 | 60,32 | 48,26 | 76,20 |
2 x 1 1/4 | 50 x 32 | 60,32 | 42,16 | 76,20 |
2 x 1 | 50 x 25 | 60,32 | 33,40 | 76,20 |
2 x 3/4 | 50 x 20 | 60,32 | 26,67 | 76,20 |
2 1/2 x 2 | 65 x 50 | 73,02 | 60,32 | 88,90 |
2 1/2 x 1 1/2 | 65 x 40 | 73,02 | 48,26 | 88,90 |
2 1/2 x 1 1/4 | 65 x 32 | 73,02 | 42,16 | 88,90 |
2 1/2 x1 | 65 x 25 | 73,02 | 33,40 | 88,90 |
3 x 2 1/2 | 80 x 65 | 88,90 | 73,02 | 88,90 |
3 x 2 | 80 x 50 | 88,90 | 60,32 | 88,90 |
3 x 1 1/2 | 80 x 40 | 88,90 | 48,26 | 88,90 |
3 x 1 1/4 | 80 x 32 | 88,90 | 42,16 | 88,90 |
3 1/2 x 3 | 90 x 80 | 101,60 | 88,90 | 101.60 |
3 1/2 x 2 1/2 | 90 x 65 | 101,60 | 73,02 | 101.60 |
3 1/2 x 2 | 90 x 50 | 101,60 | 60,32 | 101.60 |
3 1/2 x 1 1/2 | 90 x 40 | 101,60 | 48,26 | 101.60 |
3 1/2 x 1 1/4 | 90 x 32 | 101,60 | 42,16 | 101.60 |
4 x 3 1/2 | 100 x 90 | 114,30 | 73,02 | 101.60 |
4 x 3 | 100 x 80 | 114,30 | 88,90 | 101.60 |
4 x 2 1/2 | 100 x 65 | 114,30 | 73,02 | 101.60 |
4 x 2 | 100 x 50 | 114,30 | 60,32 | 101.60 |
4 x 1 1/2 | 100 x 40 | 114,30 | 48,26 | 101.60 |
5 x 4 | 125 x 100 | 141,30 | 114,30 | 127,00 |
5 x 3 1/2 | 125 x 90 | 141,30 | 101,60 | 127,00 |
5 x 3 | 125 x 80 | 141,30 | 88,90 | 127,00 |
5 x 2 1/2 | 125 x 65 | 141,30 | 73,02 | 127,00 |
5 x 2 | 125 x 50 | 141,30 | 60,32 | 127,00 |
6 x 5 | 150 x 125 | 168,27 | 141,30 | 139,7 |
6 x 4 | 150 x 100 | 168,27 | 114,30 | 139,7 |
6 x 1/2 | 150 x 90 | 168,27 | 101,60 | 139,7 |
6 x 3 | 150 x 80 | 168,27 | 88,90 | 139,7 |
6 x 1/2 | 150 x 65 | 168,27 | 73,02 | 139,7 |
8 x 6 | 200 x 150 | 219,07 | 168,27 | 152,4 |
8 x 5 | 200 x 125 | 219,07 | 141,30 | 152,4 |
8 x 4 | 200 x 100 | 219,07 | 114,30 | 152,4 |
8 x 3 1/2 | 200 x 90 | 219,07 | 101,60 | 152,4 |
10 x 8 | 250 x 200 | 273,05 | 219,07 | 177,8 |
10 x 6 | 250 x 150 | 273,05 | 168,27 | 177,8 |
10 x 5 | 250 x 125 | 273,05 | 141,30 | 177,8 |
10 x 4 | 250 x 100 | 273,05 | 114,30 | 177,8 |
12 x 10 | 300 x 250 | 323,85 | 273,05 | 203,2 |
12 x 8 | 300 x 200 | 323,85 | 219,07 | 203,2 |
12 x 6 | 300 x 150 | 323,85 | 168,27 | 203,2 |
12 x 5 | 300 x 125 | 323,85 | 141,30 | 203,2 |
14 x 12 | 350 x 300 | 355,60 | 323,85 | 330,2 |
14 x 10 | 350 x 250 | 355,60 | 273,05 | 330,2 |
14 x 8 | 350 x 200 | 355,60 | 219,07 | 330,2 |
14 x 6 | 350 x 150 | 355,60 | 168,27 | 330,2 |
16 x 14 | 400 x 350 | 406,40 | 355,60 | 355,6 |
16 x 12 | 400 x 300 | 406,40 | 323,85 | 355,6 |
16 x 10 | 400 x 250 | 406,40 | 273,05 | 355,6 |
16 x 8 | 400 x 200 | 406,40 | 219,07 | 355,6 |
18 x 16 | 450 x 400 | 457,20 | 406,40 | 381,0 |
18 x 14 | 450 x 350 | 457,20 | 355,60 | 381,0 |
18 x 12 | 450 x 300 | 457,20 | 323,85 | 381,0 |
18 x 10 | 450 x 250 | 457,20 | 273,05 | 381,0 |
20 x 18 | 500 x 450 | 508,00 | 457,20 | 508,0 |
20 x 16 | 500 x 400 | 508,00 | 406,40 | 508,0 |
20 x 14 | 500 x 350 | 508,00 | 355,60 | 508,0 |
20 x 12 | 500 x 300 | 508,00 | 323,85 | 508,0 |
22 x 20 | 550 x 500 | 558,80 | 508,00 | 508,0 |
22 x 18 | 550 x 450 | 558,80 | 457,20 | 508,0 |
22 x 16 | 550 x 400 | 558,80 | 406,40 | 508,0 |
22 x 14 | 550 x 350 | 558,80 | 355,60 | 508,0 |
24 x 22 | 600 x 550 | 609,6 | 558,80 | 508,0 |
24 x 20 | 600 x 500 | 609,6 | 508,00 | 508,0 |
24 x 18 | 600 x 450 | 609,6 | 457,20 | 508,0 |
24 x 16 | 600 x 400 | 609,6 | 406,40 | 508,0 |
Dimension in mm. |
ASME B16.9 Eccentric Pipe Reducers Dimensions:
Nominal Diameter(mm) | Outside Diameter(mm) | End to End | ||
---|---|---|---|---|
D1*D2 | ||||
mm | inch | Series A | Series B | H |
20×15 | 3/4×1/2 | 26.9×21.3 | 25×18 | 38 |
20×10 | 3/4×3/8 | 26.9×17.3 | 25×14 | 38 |
25×20 | 1×3/4 | 33.7×26.9 | 32×25 | 51 |
25×15 | 1×1/2 | 33.7×21.3 | 32×18 | 51 |
32×25 | 1.1/4×1 | 42.4×33.7 | 38×32 | 51 |
32×20 | 1.1/4×3/4 | 42.4×26.9 | 38×25 | 51 |
32×15 | 1.1/4×1/2 | 42.4×21.3 | 38×18 | 51 |
40×32 | 1.1/2×1.1/4 | 48.3×42.4 | 45×38 | 64 |
40×25 | 1.1/2×1 | 48.3×33.7 | 45×32 | 64 |
40×20 | 1.1/2×3/4 | 48.3×26.9 | 45×25 | 64 |
40×15 | 1.1/2×1/2 | 48.3×21.3 | 45×18 | 64 |
50×40 | 2×1.1/2 | 60.3×48.3 | 57×45 | 76 |
50×32 | 2×1.1/4 | 60.3×42.4 | 57×38 | 76 |
50×25 | 2×1 | 60.3×33.7 | 57×32 | 76 |
50×20 | 2×3/4 | 60.3×26.9 | 57×25 | 76 |
65×50 | 2.1/2×2 | 73.0×60.3 | 76×57 | 89 |
65×40 | 2.1/2×1.1/2 | 73.0×48.3 | 76×45 | 89 |
65×32 | 2.1/2×1.1/4 | 73.0×42.4 | 76×38 | 89 |
65×25 | 2.1/2×1 | 73.0×33.7 | 76×32 | 89 |
80×65 | 3×2.1/2 | 88.9×73.0 | 89×76 | 89 |
80×50 | 3×2 | 88.9×60.3 | 89×57 | 89 |
80×40 | 3×1.1/2 | 88.9×48.3 | 89×45 | 89 |
80×32 | 3×1.1/4 | 88.9×42.4 | 89×38 | 89 |
90×80 | 3.1/2×3 | 101.6×88.9 | - | 102 |
90×65 | 3.1/2×2.1/2 | 101.6×73.0 | - | 102 |
90×50 | 3.1/2×2 | 101.6×60.3 | - | 102 |
90×40 | 3.1/2×1.1/2 | 101.6×48.3 | - | 102 |
90×32 | 3.1/2×1.1/4 | 101.6×42.4 | - | 102 |
100×90 | 4×3.1/2 | 114.3×101.6 | - | 102 |
100×80 | 4×3 | 114.3×88.9 | 108×89 | 102 |
100×65 | 4×2.1/2 | 114.3×73.0 | 108×76 | 102 |
100×50 | 4×2 | 114.3×60.3 | 108×57 | 102 |
100×40 | 4×1.1/2 | 114.3×48.3 | 108×45 | 102 |
125×100 | 5×4 | 141.3×114.3 | 133×108 | 127 |
125×90 | 5×3.1/2 | 141.3×101.6 | - | 127 |
125×80 | 5×3 | 141.3×88.9 | 133×89 | 127 |
125×65 | 5×2.1/2 | 141.3×73.0 | 133×76 | 127 |
125×50 | 5×2 | 141.3×60.3 | 133×57 | 127 |
150×125 | 6×5 | 168.3×141.3 | 159×133 | 140 |
150×100 | 6×5 | 168.3×114.3 | 159×108 | 140 |
150×90 | 6×3.1/2 | 168.3×101.6 | - | 140 |
150×80 | 6×3 | 168.3×88.9 | 159×89 | 140 |
150×65 | 6×2.1/2 | 168.3×73.0 | 159×76 | 140 |
200×150 | 8×6 | 219.1×168.3 | 219×159 | 152 |
200×125 | 8×5 | 219.1×141.3 | 219×133 | 152 |
200×100 | 8×4 | 219.1×114.3 | 219×108 | 152 |
200×90 | 8×3.1/2 | 219.1×101.6 | - | 152 |
250×200 | 10×8 | 273.0×219.1 | 273×219 | 178 |
250×150 | 10×6 | 273.0×168.3 | 273×159 | 178 |
250×125 | 10×5 | 273.0×141.3 | 273×133 | 178 |
250×100 | 10×4 | 273.0×114.3 | 273×108 | 178 |
300×250 | 12×10 | 323.9×273.1 | 325×273 | 203 |
300×200 | 12×8 | 323.9×219.1 | 325×219 | 203 |
300×150 | 12×6 | 323.9×168.3 | 325×159 | 203 |
300×125 | 12×5 | 323.9×141.3 | 325×133 | 203 |
350×300 | 14×12 | 355.6×323.9 | 377×325 | 330 |
350×250 | 14×10 | 355.6×273.0 | 377×273 | 330 |
350×200 | 14×8 | 355.6×219.1 | 377×219 | 330 |
350×150 | 14×6 | 355.6×168.3 | 377×159 | 330 |
400×350 | 16×14 | 406.4×355.6 | 426×377 | 356 |
400×300 | 16×12 | 406.4×323.9 | 426×325 | 356 |
400×250 | 16×10 | 406.4×273.0 | 426×273 | 356 |
400×200 | 16×8 | 406.4×219.1 | 426×219 | 356 |
450×400 | 18×16 | 457×406.4 | 478×426 | 381 |
450×350 | 18×14 | 457×355.6 | 478×377 | 381 |
450×300 | 18×12 | 457×323.9 | 478×325 | 381 |
450×250 | 18×10 | 457×273.0 | 478×273 | 381 |
500×450 | 20×18 | 508×457 | 529×478 | 508 |
500×400 | 20×16 | 508×406.4 | 529×426 | 508 |
500×350 | 20×14 | 508×355.6 | 529×377 | 508 |
500×300 | 20×12 | 508×323.9 | 529×325 | 508 |
550×500 | 22×20 | 559×508 | - | 508 |
550×450 | 22×18 | 559×457 | - | 508 |
550×400 | 22×16 | 559×406.4 | - | 508 |
550×350 | 22×14 | 559×355.6 | - | 508 |
600×550 | 24×22 | 610×559 | - | 508 |
600×500 | 24×20 | 610×508 | 630×529 | 508 |
600×450 | 24×18 | 610×457 | 630×478 | 508 |
600×400 | 24×22 | 610×406.4 | 630×426 | 508 |
650×600 | 26×24 | 660×610 | - | 610 |
650×550 | 26×22 | 660×559 | - | 610 |
650×500 | 26×20 | 660×508 | - | 610 |
650×450 | 26×18 | 660×457 | - | 610 |
700×650 | 28×26 | 711×660 | - | 610 |
700×600 | 28×24 | 711×610 | 720×630 | 610 |
700×550 | 28×22 | 711×559 | - | 610 |
700×500 | 28×20 | 711×508 | 720×530 | 610 |
750×700 | 30×28 | 762×711 | - | 610 |
750×650 | 30×26 | 762×660 | - | 610 |
750×600 | 30×24 | 762×610 | - | 610 |
750×550 | 30×22 | 762×559 | - | 610 |
800×750 | 32×30 | 813×762 | - | 610 |
800×700 | 32×28 | 813×711 | 820×720 | 610 |
800×650 | 32×26 | 813×660 | - | 610 |
800×600 | 32×24 | 813×610 | 820×630 | 610 |
850×800 | 34×32 | 864×813 | - | 610 |
850×750 | 34×30 | 864×762 | - | 610 |
850×700 | 34×28 | 864×711 | - | 610 |
850×650 | 34×26 | 864×660 | - | 610 |
900×850 | 36×34 | 914×864 | - | 610 |
900×800 | 36×32 | 914×813 | 920×820 | 610 |
900×750 | 36×30 | 914×762 | - | 610 |
900×700 | 36×28 | 914×711 | 920×720 | 610 |
950×900 | 38×36 | 965×914 | - | 610 |
950×850 | 38×34 | 965×864 | - | 610 |
950×800 | 38×32 | 965×813 | - | 610 |
950×750 | 38×30 | 965×762 | - | 610 |
1000×950 | 40×38 | 1016×965 | - | 610 |
1000×900 | 40×36 | 1016×914 | 1020×920 | 610 |
1000×850 | 40×34 | 1016×864 | - | 610 |
1000×800 | 40×32 | 1016×813 | 1020×820 | 610 |
1050×1000 | 42×40 | 1067×1016 | - | 610 |
1050×950 | 42×38 | 1067×965 | - | 610 |
1050×900 | 42×36 | 1067×914 | - | 610 |
1050×850 | 42×34 | 1067×864 | - | 610 |
1100×1050 | 44×42 | 1118×1067 | - | 610 |
1100×1000 | 44×40 | 1118×1016 | 1120×1020 | 610 |
1100×950 | 44×38 | 1118×965 | - | 610 |
1100×900 | 44×36 | 1118×914 | 1220×920 | 610 |
1150×1100 | 46×44 | 1168×1118 | - | 711 |
1150×1050 | 46×42 | 1168×1067 | - | 711 |
1150×1000 | 46×40 | 1168×1016 | - | 711 |
1150×950 | 46×38 | 1168×965 | - | 711 |
1200×1150 | 48×46 | 1220×1168 | - | 711 |
1200×1100 | 48×44 | 1220×1118 | 1220×1120 | 711 |
1200×1050 | 48×42 | 1220×1067 | - | 711 |
1200×1000 | 48×40 | 1220×1016 | 1220×1020 | 711 |