Wenzhou Kaixin Kaixin Metal Co., Ltd
A stainless steel concentric reducer is a type of pipe fitting that is used to connect pipes of different sizes in a piping system. It is a conical shaped fitting that narrows down the diameter of a pipe while maintaining the centerline of the pipe. The reducer has a large end and a smaller end, and it is used to join pipes of different sizes by welding or threading. Stainless steel concentric reducers are commonly used in industrial piping systems where it is necessary to reduce the flow of fluid or gas. They are made of high-quality stainless steel, which makes them resistant to corrosion and suitable for use in high-pressure and high-temperature applications. The concentric design of the reducer ensures that there is no turbulence in the fluid flow, which helps to maintain the overall efficiency of the piping system.
Buttweld Concentric Reducer Specifications
| Groottes | Seamless Pipe Reducing Tee ( 1/2″ ～ 24 ″), AKER / Gesweis / Fabricated Pipe Reducing Tee (1/2″ ～ 48 ″) |
| Standaarde | Ansi - B 16.9, ASTM A403 - ASME SA403 - 'Standaardspesifikasie vir bewerkte austenitiese vlekvrye staal pype -toebehore', Api 590-605, ASME B16.9-'Fabrieksgemaakte smee-boude-toebehore', ASME B16.25 - 'ButtWeling Ends', ASME B16.28 - 'Smeedstaal Butt Welding kort radius elmboë en terugkeer', MSS SP-43-‘Verwerkte en vervaardigde boude-sweis-toebehore vir lae druk, Corrosion Resistant Application’ |
| Afmetings | ANSI B16.9, ANSI B16.28, MSS-SP-43 tipe A, MSS-SP-43 tipe B, Net B2312, JIS B2313 |
| Dikte | Bylae 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS en ens. |
| Buigradius | R = 1d - 10d, 15D, 20D |
| Van | Concentric Reducer, Pipe Reducer, Pipe Concentric Reducers, Fitting Concentric
Reducers. |
| Grade&Materiaal | 304/L/h/ln, 316/L/h/ln/ti, 321/H, 317/L/ln, 347/H, 310S/H, N08904(904L), S31803, S32205, S32750, S32760, N02200, N02201, N04400, N06600, N06690, N06625, N06985(G3), N08028, N08800, N08810, N08811, N08825Surface,Monel, Nikkel, Inklok, Siekte, Titaan, Tantalum, Vleklose staal, Legeringsstaal, Koolstofstaal, Cupro-nikkel 90/10 & 70/30, Vlekvrye staal ASME / ASTM SA / A403 SA / A 774 Wp-s, Wp-w, WP-WX, VAN 1.4301, DIN1.4306, VAN 1.4401, VAN 1.4404 |
| Tik | Boude sweis (BW) / Naatloos / Gesweis / AKER / Opgemaak |
| Coating / Oppervlak behandeling | Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized |
Buttweld Concentric Reducer Manufacturing Standards
| ASME Standaard | ASME/ANSI B16.9, ASME/ANSI B16.28, MSS-SP-43 |
| Jou standaard | DIN28011, DIN2617, DIN2616, DIN2615, DIN2605 |
| 'n Standaard | EN10253-2, EN10253-1 |
| ASME B16.25 | Buttwelding Ends |
| ASME B16.9 | Factory-Made Wrought Fittings Buttwelding |
| ASME B16.28 | Wrought Steel Eccentric Reducer |
| ASTM A403 – ASME SA403 | Standard Specification for Wrought Austenitic Stainless Steel Piping Fitting |
| MSS SP-43 | Wrought & Fabricated Butt-Welding Fitting for Low Pressure, Corrosion Resistant Applications |
BUTTWELD CONCENTRIC REDUCER – MATERIALS & Grades
| Stainless Steel Concentric Reducers – Buttweld | ASTM A403 WP316/316L, ASTM A403 dit / A 774 Wp-s, Wp-w, WP-WX 304/304L, ASTM A182 F316L, 304L, VAN 1.4301, DIN1.4306, VAN 1.4401, VAN 1.4404 |
| Dupleks & Super Duplex Steel Concentric Reducers – Buttweld | ASTM A 815, ASME SA 815 Ons geen S31803, S32205. VSA S32750, S32950. Materiaal No. 1.4462 |
| Carbon Steel Concentric Reducers – Buttweld | ASTM A234, ASME SA234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, Wph 60, WPHY 65 & WPHY 70. |
| Low Temperature Carbon Steel Concentric Reducers – Buttweld | ASTM A420 WPL3, A420 WPL6 |
| Alloy Steel Concentric Reducers – Buttweld | ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91 |
| Nickel Alloy Concentric Reducers – Buttweld | ASTM B336, ASME SB336, Nikkel 200 (Ons nee. NO2200), Nikkel 201 (Ons nee. N02201), Monel 400 (Ons nee. N04400), Monel 500 (Ons nee. N05500), Inklok 800 (Ons nee. N08800), Inklok 825 (Ons nee. N08825), Inklok 600 (Ons nee. N06600), Inklok 625 (Ons nee. N06625), Inklok 601 (Ons nee. N06601), Hastelloy C 276 (Ons nee. N10276), Allooi 20 (Ons nee. N08020), Titaan (Graad I & Ii), Cupro-nikkel 70/30, CUNI10FE1MN, CUNI30MN1FE. |
Buttweld Concentric Reducer Dimensions
Dimensions are in millimeters unless otherwise indicated. Wall thickness (t) should be nominative by client. Outlet dimension (M) for NPS twenty-six and bigger is usually recommended however not needed.
| Nominale pypgrootte (NPS) | Buitediameter(Van) by Bevel | End-to- End, H | |
| Large End | Small End | ||
| 3/4×1/2 | 26.7 | 21.3 | 38 |
| 3/4×3/8 | 26.7 | 17.3 | 38 |
| 1×3/4 | 33.4 | 26.7 | 51 |
| 1×1/2 | 33.4 | 21.3 | |
| 1-1/4×1 | 42.2 | 33.4 | 51 |
| 1-1/4×3/4 | 42.2 | 26.7 | |
| 1-1/4×1/2 | 42.2 | 21.3 | |
| 1-1/2×1-1/4 | 48.3 | 42.2 | 64 |
| 1-1/2×1 | 48.3 | 33.4 | |
| 1-1/2×3/4 | 48.3 | 26.7 | |
| 1-1/2×1/2 | 48.3 | 21.3 | |
| 2×1-1/2 | 60.3 | 48.3 | 76 |
| 2×1-1/4 | 60.3 | 42.2 | |
| 2×1 | 60.3 | 33.4 | |
| 2×3/4 | 60.3 | 26.7 | |
| 2-1/2×2 | 73 | 60.3 | 89 |
| 2-1/2×1-1/2 | 73 | 48.3 | |
| 2-1/2×1-1/4 | 73 | 42.2 | |
| 2-1/2×1 | 73 | 33.4 | |
| 3×2-1/2 | 88.9 | 73 | 89 |
| 3×2 | 88.9 | 60.3 | |
| 3×1-1/2 | 88.9 | 48.3 | |
| 3×1-1/4 | 88.9 | 42.2 | |
| 3-1/2×3 | 101.6 | 88.9 | 102 |
| 3-1/2×2-1/2 | 101.6 | 73 | |
| 3-1/2×2 | 101.6 | 60.3 | |
| 3-1/2×1-1/2 | 101.6 | 48.3 | |
| 3-1/2×1-1/4 | 101.6 | 42.2 | |
| 4×3-1/2 | 114.3 | 101.6 | 102 |
| 4×3 | 114.3 | 88.9 | |
| 4×2-1/2 | 114.3 | 73 | |
| 4×2 | 114.3 | 60.3 | |
| 4×1-1/2 | 114.3 | 48.3 | |
| 5×4 | 141.3 | 114.3 | 127 |
| 5×3-1/2 | 141.3 | 101.6 | |
| 5×3 | 141.3 | 88.9 | |
| 5×2-1/2 | 141.3 | 73 | |
| 5×2 | 141.3 | 60.3 | |
| 6×5 | 168.3 | 141.3 | 140 |
| 6×4 | 168.3 | 114.3 | |
| 6×3-1/2 | 168.3 | 101.6 | |
| 6×3 | 168.3 | 88.9 | |
| 6×2-1/2 | 168.3 | 73 | |
| 8×6 | 219.1 | 168.3 | 152 |
| 8×5 | 219.1 | 141.3 | |
| 8×4 | 219.1 | 114.3 | |
| 8×3-1/2 | 219.1 | 101.6 | |
| 10×8 | 273 | 219.1 | 178 |
| 10×6 | 273 | 168.3 | |
| 10×5 | 273 | 141.3 | |
| 10×4 | 273 | 114.3 | |
| 12×10 | 323.8 | 273 | 203 |
| 12×8 | 323.8 | 219.1 | |
| 12×6 | 323.8 | 168.3 | |
| 12×5 | 323.8 | 141.3 | |
| 14×12 | 355.6 | 323 | 330 |
| 14×10 | 355.6 | 273 | |
| 14×8 | 355.6 | 219.1 | |
| 14×6 | 355.6 | 168.3 | |
| 16×14 | 406.4 | 355.6 | 356 |
| 16×12 | 406.4 | 323.8 | |
| 16×10 | 406.4 | 273 | |
| 16×8 | 406.4 | 219.1 | |
| 18×16 | 457.2 | 406.4 | 381 |
| 18×14 | 457.2 | 355.6 | |
| 18×12 | 457.2 | 323.8 | |
| 18×10 | 457.2 | 273 | |
| 20×18 | 508 | 457.2 | 508 |
| 20×16 | 508 | 406.4 | |
| 20×14 | 508 | 355.6 | |
| 20×12 | 508 | 323.8 | |
| 22×20 | 558.8 | 508 | 508 |
| 22×18 | 558.8 | 457.2 | |
| 22×16 | 558.8 | 406.4 | |
| 22×14 | 558.8 | 355.6 | |
| 24×22 | 609.6 | 558.8 | 508 |
| 24×20 | 609.6 | 508 | |
| 24×18 | 609.6 | 457.2 | |
| 24×16 | 609.6 | 406.4 | |
| 26×24 | 660 | 610 | 610 |
| 26×22 | 660 | 559 | |
| 26×20 | 660 | 508 | |
| 26×18 | 660 | 457 | |
| 28×26 | 711 | 660 | 610 |
| 28×24 | 711 | 610 | |
| 28×20 | 711 | 508 | |
| 28×18 | 711 | 457 | |
| 30×28 | 762 | 711 | 610 |
| 30×26 | 762 | 660 | |
| 30×24 | 762 | 610 | |
| 30×20 | 762 | 508 | |
| 32×30 | 813 | 762 | 610 |
| 32×28 | 813 | 711 | |
| 32×26 | 813 | 660 | |
| 32×24 | 813 | 610 | |
| 34×32 | 864 | 813 | 610 |
| 34×30 | 864 | 762 | |
| 34×26 | 864 | 660 | |
| 342×4 | 864 | 610 | |
| 36×34 | 914 | 864 | 610 |
| 36×32 | 914 | 713 | |
| 36×30 | 914 | 762 | |
| 36×26 | 914 | 660 | |
| 36×24 | 914 | 610 | |
| 38×36 | 965 | 914 | 610 |
| 38×34 | 965 | 864 | |
| 38×32 | 965 | 813 | |
| 38×30 | 965 | 762 | |
| 38×28 | 965 | 711 | |
| 38×26 | 965 | 660 | |
| 40×38 | 965 | 965 | 610 |
| 40×36 | 1016 | 914 | |
| 40×34 | 1016 | 864 | |
| 40×32 | 1016 | 813 | |
| 40×30 | 1016 | 762 | |
| 42×40 | 1016 | 1016 | 610 |
| 42×38 | 1067 | 965 | |
| 42×36 | 1067 | 914 | |
| 42×34 | 1067 | 864 | |
| 42×32 | 1067 | 813 | |
| 42×30 | 1067 | 762 | |
| 44×42 | 1118 | 1067 | 610 |
| 44×40 | 1118 | 1016 | |
| 44×38 | 1118 | 965 | |
| 44×36 | 1118 | 914 | |
| 46×44 | 1168 | 1118 | 711 |
| 46×42 | 1168 | 1067 | |
| 46×40 | 1168 | 1016 | |
| 46×38 | 1168 | 965 | |
| 48×46 | 1219 | 1168 | 711 |
| 48×44 | 1219 | 1118 | |
| 48×42 | 1219 | 1067 | |
| 48×40 | 1219 | 1016 | |
Concentric Reducer Dimensional Tolerance
| Nominale pypgrootte | 1/2 aan 2.1/2 | 3 aan 3.1/2 | 4 | 5 aan 8 |
| Buitediameter by Bevel (D) |
+ 1.6 – 0.8 |
1.6 | 1.6 | + 2.4 – 1.6 |
| Binne deursnee aan die einde | 0.8 | 1.6 | 1.6 | 1.6 |
| Overall Length (H) | 2 | 2 | 2 | 2 |
| Nominale pypgrootte | 10 aan 18 | 20 aan 24 | 26 aan 30 | 32 aan 48 |
| Buitediameter by Bevel (D) |
+ 4 – 3.2 |
+ 6.4 – 4.8 |
+ 6.4 – 4.8 |
+ 6.4 – 4.8 |
| Binne deursnee aan die einde | 3.2 | 4.8 | + 6.4 – 4.8 |
+ 6.4 – 4.8 |
| Overall Length (H) | 2 | 2 | 5 | 5 |
| Muurdikte (t) | Nie minder as 87.5% van nominale muurdikte | |||
Butt Welding Concentric Reducer Weight Calculator
Approximate weight of a Butt welding Eccentric Reducer are calculated supported its header length, header size, branch size, branch length, header wall thickness and branch wall thickness. Please note that actual weight of a tee from a particular manufacturer might vary counting on manufacturing methodology. Dimensional standards like ASME B16.9 do not supply weights of butt attachment fittings.
Weight of a Butt Weld Eccentric Reducer as per ASME B16.9 is calculated as per following formula :
0.02466 * S <(D+d)/2 – S> * H / 1000
W = Weight in Kg
OD1 = Large Size Outside Diameter (mm)
OD2 = Smaller Size Outside Diameter (mm)
t = Wall Thickness (mm)
H = End to End Dimension (mm)
ASME B16.9 Buttweld Eccentric Reducer Weight Chart in KG
| NPS | LBS | KG |
| 4-3 | 3.38 | 1.53 |
| 4-2.1/2 | 3.25 | 1.47 |
| 4-2 | 3 | 1.36 |
| 3.1/2-2.1/2 | 2.88 | 1.31 |
| 3.1/2-2 | 2.75 | 1.25 |
| 3.1/2-1.1/2 | 2.5 | 1.13 |
| 3.1/2-1.1/4 | 2.4 | 1.09 |
| 4-3.1/2 | 3.5 | 1.59 |
| 4-1.1/2 | 2.88 | 1.31 |
| 5-4 | 6 | 2.72 |
| 5-3.1/2 | 5.75 | 2.61 |
| 5-3 | 5.5 | 2.49 |
| 5-2.1/2 | 5.25 | 2.38 |
| 5-2 | 5 | 2.27 |
| 6-5 | 8.5 | 3.86 |
| 6-4 | 8.25 | 3.74 |
| 6-3.1/2 | 8.25 | 3.74 |
| 6-3 | 8 | 3.63 |
| 6-2.1/2 | 7.25 | 3.29 |
| 8-6 | 13.2 | 5.99 |
| 8-5 | 12 | 5.44 |
| 8-4 | 11 | 4.99 |
| 8-3.1/2 | 11 | 4.99 |
| 10-8 | 22 | 9.98 |
| 10-6 | 21.5 | 9.75 |
| 10-5 | 21 | 9.53 |
| 10-4 | 20 | 9.07 |
| 12-10 | 34 | 15.42 |
| 12-8 | 32 | 14.51 |
| 12-6 | 31 | 14.06 |
| 12-5 | 30 | 13.61 |
| 14-12 | 60 | 27.22 |
| 14-10 | 59.2 | 26.85 |
| 14-8 | 58.5 | 26.54 |
| 14-6 | 58 | 26.31 |
| 16-14 | 71 | 32.21 |
| 16-12 | 70 | 31.75 |
| 16-10 | 69.5 | 31.52 |
| 16-8 | 68.5 | 31.07 |
| 16-6 | – | – |
| 18-16 | 85 | 38.56 |
| 18-14 | 84 | 38.1 |
| 3/4-1/2 | 0.17 | 0.08 |
| 3/4-3/8 | 0.15 | 0.07 |
| 1-3/4 | 0.4 | 0.18 |
| 1-1/2 | 0.4 | 0.18 |
| 1.1/4-1 | 0.5 | 0.23 |
| 1.1/4-3/4 | 0.4 | 0.18 |
| 1.1/4-1/2 | 0.4 | 0.18 |
| 1.1/2-1.1/4 | 0.7 | 0.32 |
| 1.1/2-1 | 0.62 | 0.28 |
| 1.1/2-3/4 | 0.54 | 0.24 |
| 1.1/2-1/2 | 0.5 | 0.23 |
| 2-1.1/2 | 0.9 | 0.41 |
| 2-1.1/4 | 0.84 | 0.38 |
| 2-1 | 0.76 | 0.34 |
| 2-3/4 | 0.7 | 0.32 |
| 2.1/2-2 | 1.5 | 0.68 |
| 2.1/2-1.1/2 | 1.38 | 0.63 |
| 2.1/2-1.1/4 | 1.25 | 0.57 |
| 2.1/2-1 | 1.25 | 0.57 |
| 3-2.1/2 | 2 | 0.91 |
| 3-2 | 1.8 | 0.82 |
| 3-1.1/2 | 1.7 | 0.77 |
| 3-1.1/4 | 1.6 | 0.73 |
| 3.1/2-3 | 3.15 | 1.43 |
| 18-12 | 83 | 37.65 |
| 18-10 | 82 | 37.19 |
| 18-8 | – | – |
| 20-18 | 125 | 56.7 |
| 20-16 | 124 | 56.25 |
| 20-14 | 122 | 55.34 |
| 20-12 | 120 | 54.43 |
| 20-10 | – | – |
| 20-8 | – | – |
| 22-20 | 142 | 64.41 |
| 22-18 | 138 | 62.6 |
| 22-16 | 131 | 59.42 |
| 22-14 | 123 | 55.79 |
| 22-12 | – | – |
| 22-10 | – | – |
| 24-22 | – | – |
| 24-20 | 150 | 68.04 |
| 24-18 | 148 | 67.13 |
| 24-16 | 145 | 65.77 |
| 24-14 | – | – |
| 30-26 | 232 | 105.23 |
| 30-24 | 224 | 101.6 |
| 30-22 | 220 | 99.79 |
| 30-20 | 220 | 99.79 |
| 24-12 | – | – |
| 24-10 | – | – |
| 26-24 | 207 | 93.89 |
| 26-22 | 200 | 90.72 |
| 26-20 | 190 | 86.18 |
| 26-18 | 182 | 82.55 |
| 26-16 | – | – |
| 26-14 | – | – |
| 26-12 | – | – |
| 28-26 | 224 | 101.6 |
| 28-24 | 216 | 97.98 |
| 28-22 | 210 | 95.25 |
| 28-20 | 199 | 90.26 |
| 30-28 | 241 | 109.32 |
Concentric Reducer Angularity Tolerance
| ND | Maksimum afhoek | Max uit die vliegtuig |
| V | P | |
| 1/2 a 4 | 1 | 2 |
| 5 a 8 | 2 | 4 |
| 10 a 12 | 3 | 5 |
| 14 a 16 | 3 | 7 |
| 18 a 24 | 4 | 10 |
| 26 a 30 | 5 | 10 |
| 32 a 42 | 5 | 13 |
| 44 a 48 | 5 | 20 |
What is the use of Buttweld Concentric Reducer?
- They are helpful in services wherever cavitation is present.
- When transporting between flanges or pipes of various ratings and wear protection is important, concentrical reducers are ideal.
- Concentric reducers are utilized in discharge of the pump.
- Concentric reducers can transition graciously between the piping and also the pump.
- The concentrical reducers facilitate in transporting slurries or abrasive liquids.
Available Types of ASME B16.9 Buttweld Concentric Reducer
| Buttweld Concentric Reducer | ASME B16.28 Butt weld Concentric Reducer |
| Hastelloy Concentric Reducer | ASME B16.9 Buttweld Concentric Pipe Reducer |
| High Nickel Alloy Concentric Reducer | Inconel Butt weld Concentric Reducer |
| ANSI B16.9 Buttweld Concentric Reducer | Titanium Buttweld Concentric Reducer |
| Steel Reducer Pipe Fittings | High Quality Concentric Reducer |
| Stainless Steel Concentric Reducer | Seamless Butt weld Concentric Reducer |
| Welded Butt weld Concentric Reducer | SS Concentric Reducers |
| Carbon Steel Concentric Reducer | Butt Weld Pipe Reducers |
| Copper Nickel Concentric Reducer | Duplex Steel Buttweld Concentric Reducer |
| Super Duplex Steel Buttweld Concentric Reducer | ASTM A403 Stainless Steel Concentric Reducer |
Buttweld Concentric Reducer Application
ASME B16.9 Concentric Reducer are known to deliver exceptional performance and are generally developed for meeting the demands. We offer a broad range of Buttweld Reducer through a worldwide network of stock-keeping branches. These Concentric Pipe Reducer is use in various industries like :
- Stainless Steel Buttweld Concentric Reducer uses in Oil and Gas Pipeline
- Butt weld Concentric Reducers uses in Chemical Industry
- Alloy Steel Concentric Reducer uses in Plumbing
- Buttweld Concentric Pipe Reducer uses in Heating
- Buttweld Concentric Reducer Fittings uses in Water Supply Systems
- ANSI B16.9 Buttweld Concentric Reducer uses in Power Plant
- Buttweld Concentric Reducer Fitting uses in Paper & Pulpbedryf
- Concentric Reducer uses in General Purpose Applications
- Buttweld Concentric Reducer uses in Fabrication Industry
- Concentric Reducer uses in Food Processing Industry
- Buttweld Concentric Reducer uses in Structural Pipe
