A StainlessSteelButtWeldReducingTee is a type of pipe fitting used in industrial applications to connect three pipes of different sizes. This tee fitting has a tapered outlet that is smaller in diameter than the main supply line, allowing for flow rate adjustment and distribution of fluids to multiple directions. Made of high-quality stainless steel material, this fitting exhibits excellent corrosion resistance, durability, and strength, making it ideal for use in harsh, corrosive environments such as chemical and petrochemical plants, oil and gas refineries, power generation, and water treatment. The butt-weld design ensures a secure and tight fit, preventing leakage and ensuring maximum efficiency.
BUTTWELD REDUCING TEE SPECIFICATIONS
| Tallas | T de reducción para tubos sin costura (1/2″~24″), T de reducción para tubos ERW / soldados / fabricados (1/2″~48″) |
| Normas | ANSI/ASME :ASTM A403 / ASME SA403, ANSI B16.9, ASME B16.25, ASME B16.28, MSS SP-43.
DIN : DIN2605, DIN2615, DIN2616, DIN2617, DIN28011 EN : EN10253-1, EN10253-2 |
| Dimensiones | ASME/ANSI B16.9, MSS-SP-43 Tipo A, MSS-SP-43 Tipo B, JIS B2312, JIS B2313, ASME B16.28 |
| Espesor | Gama 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS, etc. |
| Radio de curvatura | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom Pipe Fittings |
| De | Unequal Tee, Reducing Tee, Pipe Tee, Butt weld Unequal Tee. |
| Calificaciones&Materiales | 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, N08825Superficie, Monel, Níquel, Inconel, Hastalloy, Titanio, Tantalio, Acero inoxidable, Acero aleado, Acero al carbono, Cupro-níquel 90/10 y 70/30, Acero inoxidable ASME / ASTM SA / A403 SA / A 774 WP-S, WP-W, WP-WX, DIN 1.4301, DIN 1.4306, DIN 1.4401, DIN 1.4404 |
| Tipo | Soldadura a tope (BW) / Sin costura / Soldado / ERW / Fabricado |
| Recubrimiento / Tratamiento de superficies | Pintura antioxidante, pintura negra al aceite, transparente amarillo, zincado, galvanizado en frío y en caliente |
Buttweld Reducing Tee Materials and Grades
| tainless Steel Unequal / Reducing Tee | ASTM A403 WP316/316L, ASTM A403 SA / A 774 WP-S, WP-W, WP-WX 304/304L, ASTM A182 F316L, 304L, DIN 1.4301, DIN 1.4306, DIN 1.4401, DIN 1.4404 |
| Duplex & Super Duplex Steel Unequal / Reducing Tee | ASTM A 815, ASME SA 815, UNS n.º S31803, S32205. UNS S32750, S32950. N.º de material 1.4462 |
| Carbon Steel Unequal / Reducing Tee | ASTM A234, ASME SA234 WPB, WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 y WPHY 70. |
| Low Temperature Carbon Steel Unequal / Reducing Tee | ASTM A420 WPL3, A420 WPL6 |
| Alloy Steel Unequal / Reducing Tee | ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91 |
| Nickel Alloy Unequal / Reducing Tee | ASTM B336, ASME SB336, Níquel 200 (N.º UNS N02200), Níquel 201 (N.º UNS N02201), Monel 400 (N.º UNS N04400), Monel 500 (UNS N.º N05500), Inconel 800 (UNS N.º N08800), Inconel 825 (UNS N.º N08825), Inconel 600 (UNS N.º N06600), Inconel 625 (N.º UNS N06625), Inconel 601 (N.º UNS N06601), Hastelloy C 276 (N.º UNS N10276), Aleación 20 (N.º UNS N08020), titanio (Grado I y II), cuproníquel 70/30, CuNi10Fe1Mn, CuNi30Mn1Fe. |
Buttweld Reducing Tee Manufacturing Standards
| Norma ASME | ASME/ANSI B16.9, ASME/ANSI B16.28, MSS-SP-43 |
| Norma DIN | DIN 28011, DIN 2617, DIN 2616, DIN 2615, DIN 2605 |
| Norma EN | EN 10253-2, EN 10253-1 |
| ASME B16.25 | Extremos para soldadura a tope |
| ASME B16.9 | Accesorios forjados de fabricación industrial para soldadura a tope |
| ASME B16.28 | Wrought Steel Reducing Tees and Buttwelding Returns |
| ASTM A403 – ASME SA403 | Especificación estándar para accesorios de tubería de acero inoxidable austenítico forjado |
| MSS SP-43 | Accesorios de soldadura a tope forjados y fabricados para aplicaciones de baja presión y resistentes a la corrosión |
DIMENSIONS OF BUTTWELD REDUCING TEE – ANSI 16.9
| Diámetro nominal de la tubería | Outside diameter
at bevel |
Center-to-End | |||
| Run | Outlet | Run | Outlet | Run (C) | Outlet (M) |
| 1/2″ | 1/4″
3/8″ |
21.3 | 13.7
17.3 |
25 | 25 |
| 3/4″ | 3/8″
1/2″ |
26.7 | 17.3
21.3 |
29 | 29 |
| 1inch | 1/2″
3/4″ |
33.4 | 21.3
26.7 |
38 | 38 |
| 1 1/4inch | 1/2″
3/4″ 1″ |
42.2 | 21.3
26.7 33.4 |
48 | 48 |
| 1 1/2inch | 1/2″
3/4″ 1″ 1 1/4″ |
48.3 | 21.3
26.7 33.4 42.2 |
57 | 57 |
| 2″ | 3/4″
1″ 1 1/4″ 1 1/2″ |
60.3 | 26.7
33.4 42.2 48.3 |
64 | 44
51 57 60 |
| 2 1/2″ | 1″
1 1/4″ 1 1/2″ 2″ |
73.0 | 33.4
42.2 48.3 60.3 |
76 | 57
64 67 70 |
| 3″ | 1 1/4″
1 1/2″ 2″ 2 1/2″ |
88.9 | 42.2
48.3 60.3 73.0 |
86 | 70
73 76 83 |
| 3 1/2″ | 1 1/2″
2″ 2 1/2″ 3″ |
101.6 | 48.3
60.3 73.0 88.9 |
95 | 79
83 89 92 |
| 4″ | 1 1/2″
2″ 2 1/2″ 3″ 3 1/2″ |
114.3 | 48.3
60.3 73.0 88.9 101.6 |
105 | 86
89 95 98 102 |
| 5″ | 2″
2 1/2″ 3″ 3 1/2″ 4″ |
141.3 | 60.3
73.0 88.9 101.6 114.3 |
124 | 105
108 111 114 117 |
| 6″ | 2 1/2″
3″ 3 1/2″ 4″ 5 |
168.3 | 73.0
88.9 101.6 114.3 141.3 |
143 | 121
124 127 130 137 |
| 8″ | 3 1/2″
4″ 5″ 6″ |
219.1 | 101.6
114.3 141.3 168.3 |
178 | 152
156 162 168 |
| 10″ | 4″
5″ 6″ 8″ |
273.0 | 114.3
141.3 168.3 219.1 |
216 | 184
191 194 203 |
| 12″ | 5″
6″ 8″ 10″ |
323.8 | 141.3
168.3 219.1 273.0 |
254 | 216
219 229 241 |
| 14″ | 6″
8″ 10″ 12″ |
355.6 | 168.3
219.1 273.0 323.8 |
279 | 238
248 257 270 |
| 16″ | 6″
8″ 10″ 12″ 14″ |
406.4 | 168.3
219.1 273.0 323.8 355.6 |
305 | 264
273 283 295 305 |
| 18″ | 8″
10″ 12″ 14″ 16″ |
457.0 | 219.1
273.0 323.8 355.6 406.4 |
343 | 298
308 321 330 330 |
| 20″ | 8″
10″ 12″ 14″ 16″ 18″ |
508.0 | 219.1
273.0 323.8 355.6 406.4 457.0 |
381 | 324
333 346 356 356 368 |
| 22″ | 10″
12″ 14″ 16″ 18″ 20″ |
559.0 | 273.0
323.8 355.6 406.4 457.0 508.0 |
419 | 359
371 381 381 394 406 |
| 24″ | 10″
12″ 14″ 16″ 18″ 20″ 22″ |
610.0 | 273.0
323.8 355.6 406.4 457.0 508.0 559.0 |
432 | 384
397 406 406 419 432 432 |
ASME B16.9 Buttweld Reducing Tee Weight Chart
| DN | NPS | STD | 40 | XS | 80 | 160 | XXS |
| 40 | 1 1/2 | 0.9 | 0.9 | 1.3 | 1.3 | 1.5 | 1.3 |
| 50 | 2 | 1.5 | 1.5 | 2.2 | 2.2 | 2.7 | 3.4 |
| 65 | 2 1/2 | 2.7 | 2.7 | 3.0 | 3.0 | 3.1 | 3.8 |
| 80 | 3 | 3.8 | 3.8 | 4.4 | 4.4 | 5.6 | 6.1 |
| 90 | 3 1/2 | 4.6 | 4.6 | 5.9 | 5.9 | ||
| 100 | 4 | 6.5 | 6.5 | 7.7 | 7.7 | 10.2 | 12.9 |
| 15 | 1/2 | 0.21 | 0.2 | 0.2 | 0.2 | ||
| 20 | 3/4 | 0.2 | 0.2 | 0.3 | 0.3 | ||
| 25 | 1 | 0.3 | 0.3 | 0.5 | 0.5 | ||
| 32 | 1 1/4 | 0.6 | 0.6 | 0.7 | 0.7 | ||
| 125 | 5 | 9.7 | 9.7 | 13.5 | 13.5 | 19.8 | 25.7 |
| 150 | 6 | 14 | 14 | 19.3 | 19.3 | 34 | 30.6 |
| 200 | 8 | 24.5 | 24.5 | 34.5 | 34.5 | 50 | 47.7 |
| 250 | 10 | 41.3 | 41.3 | 58.4 | 67.5 | 111.2 | 84.7 |
| 300 | 12 | 65 | 69 | 76.5 | 105 | 158 | 129 |
| 350 | 14 | 83 | 96 | 104 | 142 | 232 | |
| 400 | 16 | 110 | 120 | 120 | 187 | 335 | |
| 450 | 18 | 132 | 170 | 159 | 263 | 564 | |
| 500 | 20 | 168 | 240 | 192 | 356 | 756 | |
| 550 | 22 | 185 | 209 | 416 | 1002 | ||
| 600 | 24 | 222 | 345 | 251 | 548 | 1215 |
ASME B16.9 Reducing Tee Dimensional Tolerance
| Diámetro nominal de la tubería | 1/2 a 2,5 | 3 a 3,5 | 4 | De 5 a 8 | De 10 a 18 | 20 a 24 | del 26 al 30 | 32 a 48 |
| Inside Dia at End | 0.8 | 1.6 | 1.6 | 1.6 | 3.2 | 4.8 | +6.4
-4.8 |
+6.4
-4.8 |
| Outside Dia
en el bisel (D) |
+1.6
-0.8 |
1.6 | 1.6 | +2.4
-1.6 |
+4
-3.2 |
+6.4
-4.8 |
+6.4
-4.8 |
+6.4
-4.8 |
| Center to End (C / M) | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 5 |
| Wall Thk (t) | Un espesor nominal de pared no inferior a 87,51 TP3T | |||||||
ASME B16.9 Reducing Tee Angularity Tolerance
| ND | Ángulo máximo de salida | Máximo fuera del plano |
| Q | P | |
| 1/2 a 4 | 1 | 2 |
| 5 a 8 | 2 | 4 |
| de 10 a 12 | 3 | 5 |
| 14 a 16 | 3 | 7 |
| 18 a 24 | 4 | 10 |
| del 26 al 30 | 5 | 10 |
| 32 a 42 | 5 | 13 |
| 44 a 48 | 5 | 20 |
AVAILABLE TYPES OF BUTTWELD REDUCING TEE
| Buttweld Unequal Tee | ASME B16.28 Buttweld Reducing Pipe Tees |
| Hastelloy Pipe Reducing Tees | Titanium Buttweld Reducing Tee |
| High Nickel Alloy Unequal Tee | Inconel Butt weld Reducing Tee |
| ANSI B16.9 Buttweld Reducing Tee | ASME B16.9 Butt weld Unequal Tee |
| Steel Reducing Tee Pipe Fittings | Butt Weld Reducing Tee |
| Stainless Steel Unequal Tee | SS Unequal Tees |
| Welded Butt weld Unequal Tee | Seamless Butt weld Unequal Tee |
| Carbon Steel Reducing Tee | High Quality Unequal Tee |
| Copper Nickel Unequal Tee | Duplex Steel Buttweld Reducing Tee |
| Super Duplex Steel Buttweld Reducing Tee | ASTM A403 Stainless Steel Unequal Tees |
Reducing Tee Buttweld Fittings – Industries & Applications
Our Reducing Tee Buttweld Fittings is used in various applications and industries. Below are a few of them:
- Oil & Gas Industries
- Gas Processing Industries
- Food Processing Industries
- Petrochemical Industries
- Chemical Industries
- Power Generation Industries
- Sugar Industries
- Fertilizers Industries
Wenzhou Kaixin Kaixin Metal Co., Ltd.







