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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
| Sizes | Seamless Pipe Reducing Tee ( 1/2″～24″), ERW / Welded / Fabricated Pipe Reducing Tee (1/2″～48″) |
| Standards | ANSI/ASME :ASTM A403 / ASME SA403, ANSI B16.9, ASME B16.25, ASME B16.28, MSS SP-43.
ВІД : DIN2605, DIN2615, DIN2616, DIN2617, DIN28011 IN : EN10253-1, EN10253-2 |
| Dimensions | ASME/ANSI B16.9, MSS-SP-43 Type A, MSS-SP-43 Type B, JIS B2312, JIS B2313, ASME B16.28 |
| Thickness | Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc. |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom Pipe Fittings |
| From | Unequal Tee, Reducing Tee, Pipe Tee, Butt weld Unequal Tee. |
| Grades&Materials | 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, Nickel, Inconel, Hastalloy, Titanium, Tantalum, Stainless Steel, Alloy Steel, Carbon Steel, Cupro-Nickel 90/10 & 70/30, Stainless Steel ASME / ASTM SA / A403 SA / A 774 WP-S, WP-W, WP-WX, ВІД 1.4301, DIN1.4306, ВІД 1.4401, ВІД 1.4404 |
| Type | Butt Weld (BW) / Seamless / Welded / ERW / Fabricated |
| Coating / Surface Treatment | Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized |
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, ВІД 1.4301, DIN1.4306, ВІД 1.4401, ВІД 1.4404 |
| Duplex & Super Duplex Steel Unequal / Reducing Tee | ASTM A 815, ASME SA 815 UNS NO S31803, S32205. UNS S32750, S32950. Werkstoff No. 1.4462 |
| Carbon Steel Unequal / Reducing Tee | ASTM A234, ASME SA234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & 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, Nickel 200 (UNS No. No2200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II), Cupro-Nickel 70/30, CuNi10Fe1Mn, CuNi30Mn1Fe. |
Buttweld Reducing Tee Manufacturing Standards
| ASME Standard | ASME/ANSI B16.9, ASME/ANSI B16.28, MSS-SP-43 |
| DIN Standard | DIN28011, DIN2617, DIN2616, DIN2615, DIN2605 |
| EN Standard | EN10253-2, EN10253-1 |
| ASME B16.25 | Buttwelding Ends |
| ASME B16.9 | Factory-Made Wrought Fittings Buttwelding |
| ASME B16.28 | Wrought Steel Reducing Tees and Buttwelding Returns |
| ASTM A403 – ASME SA403 | Standard Specification for Wrought Austenitic SS Piping Fitting |
| MSS SP-43 | Wrought & Fabricated Butt-Welding Fitting for Low Pressure, Corrosion Resistant Applications |
DIMENSIONS OF BUTTWELD REDUCING TEE – ANSI 16.9
| Nominal Pipe Size | 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
| Nominal Pipe Size | 1/2 to 2.1/2 | 3 to 3.1/2 | 4 | 5 to 8 | 10 to 18 | 20 to 24 | 26 to 30 | 32 to 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
at Bevel (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) | Not less than 87.5% of Nominal Wall Thickness | |||||||
ASME B16.9 Reducing Tee Angularity Tolerance
| ND | Max off angle | Max off plane |
| Q | 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 |
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
