Premium Steel Pipe Tees (Straight & Reducing)
A pipe tee is a T-shaped pipe fitting with two outlets, at 90° to the connection to the main line, used to either combine or split fluid flow. We supply high-quality Straight Tees (Equal Tees) and Reducing Tees (Unequal Tees) designed to withstand high pressure and temperature in demanding industrial environments.
-
Types Available: Straight (Equal) Tee & Reducing Tee.
-
Size Range: Seamless (1/2″ to 24″) | ERW / Welded (1/2″ to 48″).
-
Wall Thickness: 3mm to 40mm (SCH5 to XXS).
-
Materials: Carbon Steel, Stainless Steel, and Alloy Steel.
-
Standards: ASME B16.9, MSS SP-75, DIN 2615, JIS B2312, GB/T 12459.
-
Applications: Petroleum, chemical processing, power plants, gas lines, metallurgy, and shipbuilding.
Description
1. Product Overview
A Pipe Tee is a type of pipe fitting which is T-shaped having two outlets, at 90° to the connection to the main line. It is a short piece of pipe with a lateral outlet. Pipe Tees are used to connect pipelines with a pipe at a right angle with the line. Pipe Tees are widely used as pipe fittings for mixing or dividing fluid flow.
Straight Tee (Equal Tee)
A straight tee is manufactured with all three outlets being the same size. It is used in systems where the branch flow requires the same diameter as the main run.
Reducing Tee
A reducing tee is manufactured with the branch outlet smaller than the main run outlets. It allows for the connection of different pipe sizes while branching the flow.
2. Specification of Steel Pipe Tees
| Feature | Details |
|---|---|
| Outer Diameter | Seamless Pipe Tees: 1/2″ ~ 24″ ERW / Welded Pipe Tees: 1/2″ ~ 48″ |
| Wall Thickness | 3mm ~ 40mm / SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Materials | Carbon Steel: SY/T5257-2004, DL/T515-2004, ASTM A234 WPB, WPC, ASTM A105 WPB, WPC, ASTM A420 WPL6, WPL3, DIN 17175-79, DIN 2448-81, ST45.8, ST35.8, DIN 1629, PB… Stainless Steel: ASTM A403 WP304, 304L, 316, 316L, 321, 1Cr18Ni9Ti, 00Cr19Ni10, 00Cr17Ni14Mo2, etc. Alloy Steel: ASTM A234 WP12, WP11, WP22, WP5, WP9, WP91, 16MnR, Cr5Mo, 12Cr1MoV, 10CrMo910, 15CrMo, 12Cr2Mo1, etc. |
| Coating Options | Black paint, varnish, rust-proof oil, hot-dip galvanizing, cold galvanizing, 3PE coating, epoxy coating, etc. |
| Usage | Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc. |
3. Standard of Steel Pipe Tees
| Standard Origin | Standard Code | Designation |
|---|---|---|
| ASME | ASME B16.9 | Factory-Made Wrought Buttwelding Fittings |
| ASME B16.28 | Wrought Steel Buttwelding Short Radius Elbows and Returns | |
| MSS | MSS SP-43 | Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications |
| MSS SP-75 | Specification for High Test Wrought Butt Welding Fittings | |
| DIN | DIN 2605 | Steel Butt-Welding Pipe Fittings |
| DIN 2615 | Steel Butt-Welding Pipe Fittings | |
| JIS | JIS B2311 | Steel Butt-Welding Pipe Fittings for Ordinary Use |
| JIS B2312 | Steel Butt-Welding Pipe Fittings | |
| GB | GB/T 12459 | Steel Butt-Welding Pipe Fittings |
| GB/T 13401 | Steel Plate Butt-Welding Pipe Fittings |
4. Straight Tees and Reducing Tees Dimensions (ASME B16.9)
| Nominal Pipe Size (NPS) | Outside Diameter at Bevel mm | Center-to-End Run C mm | Center-to-End Branch M mm |
|---|---|---|---|
| 1/2 | 21.3 | 25 | 25 |
| 3/4 | 26.7 | 29 | 29 |
| 3/4 x 3/4 x 1/2 | 26.7 | 29 | 29 |
| 1 | 33.4 | 38 | 38 |
| 1 x 1 x 3/4 | 33.4 | 38 | 38 |
| 1 x 1 x 1/2 | 33.4 | 38 | 38 |
| 1-1/4 | 42.2 | 48 | 48 |
| 1-1/4 x 1-1/4 x 1 | 42.2 | 48 | 48 |
| 1-1/4 x 1-1/4 x 3/4 | 42.2 | 48 | 48 |
| 1-1/4 x 1-1/4 x 1/2 | 42.2 | 48 | 48 |
| 1-1/2 | 48.3 | 57 | 57 |
| 1-1/2 x 1-1/2 x 1-1/4 | 48.3 | 57 | 57 |
| 1-1/2 x 1-1/2 x 1 | 48.3 | 57 | 57 |
| 1-1/2 x 1-1/2 x 3/4 | 48.3 | 57 | 57 |
| 1-1/2 x 1-1/2 x 1/2 | 48.3 | 57 | 57 |
| 2 | 60.3 | 64 | 64 |
| 2 x 2 x 1-1/2 | 60.3 | 64 | 60 |
| 2 x 2 x 1-1/4 | 60.3 | 64 | 57 |
| 2 x 2 x 1 | 60.3 | 64 | 51 |
| 2 x 2 x 3/4 | 60.3 | 64 | 44 |
| 2-1/2 | 73.0 | 76 | 76 |
| 2-1/2 x 2-1/2 x 2 | 73.0 | 76 | 70 |
| 2-1/2 x 2-1/2 x 1-1/2 | 73.0 | 76 | 67 |
| 2-1/2 x 2-1/2 x 1-1/4 | 73.0 | 76 | 64 |
| 2-1/2 x 2-1/2 x 1 | 73.0 | 76 | 57 |
| 3 | 88.9 | 86 | 86 |
| 3 x 3 x 2-1/2 | 88.9 | 86 | 83 |
| 3 x 3 x 2 | 88.9 | 86 | 76 |
| 3 x 3 x 1-1/2 | 88.9 | 86 | 73 |
| 3 x 3 x 1-1/4 | 88.9 | 86 | 70 |
| 3-1/2 | 101.6 | 95 | 95 |
| 3-1/2 x 3-1/2 x 3 | 101.6 | 95 | 92 |
| 3-1/2 x 3-1/2 x 2-1/2 | 101.6 | 95 | 89 |
| 3-1/2 x 3-1/2 x 2 | 101.6 | 95 | 83 |
| 3-1/2 x 3-1/2 x 1-1/2 | 101.6 | 95 | 79 |
| 4 | 114.3 | 105 | 105 |
| 4 x 4 x 3-1/2 | 114.3 | 105 | 102 |
| 4 x 4 x 3 | 114.3 | 105 | 98 |
| 4 x 4 x 2-1/2 | 114.3 | 105 | 95 |
| 4 x 4 x 2 | 114.3 | 105 | 89 |
| 4 x 4 x 1-1/2 | 114.3 | 105 | 86 |
| 5 | 141.3 | 124 | 124 |
| 5 x 5 x 4 | 141.3 | 124 | 117 |
| 5 x 5 x 3-1/2 | 141.3 | 124 | 114 |
| 5 x 5 x 3 | 141.3 | 124 | 111 |
| 5 x 5 x 2-1/2 | 141.3 | 124 | 108 |
| 5 x 5 x 2 | 141.3 | 124 | 105 |
| 6 | 168.3 | 143 | 143 |
| 6 x 6 x 5 | 168.3 | 143 | 137 |
| 6 x 6 x 4 | 168.3 | 143 | 130 |
| 6 x 6 x 3-1/2 | 168.3 | 143 | 127 |
| 6 x 6 x 3 | 168.3 | 143 | 124 |
| 6 x 6 x 2-1/2 | 168.3 | 143 | 121 |
| 8 | 219.1 | 178 | 178 |
| 8 x 8 x 6 | 219.1 | 178 | 168 |
| 8 x 8 x 5 | 219.1 | 178 | 162 |
| 8 x 8 x 4 | 219.1 | 178 | 156 |
| 8 x 8 x 3-1/2 | 219.1 | 178 | 152 |
| 10 | 273.0 | 216 | 216 |
| 10 x 10 x 8 | 273.0 | 216 | 203 |
| 10 x 10 x 6 | 273.0 | 216 | 194 |
| 10 x 10 x 5 | 273.0 | 216 | 191 |
| 10 x 10 x 4 | 273.0 | 216 | 184 |
| 12 | 323.8 | 254 | 254 |
| 12 x 12 x 10 | 323.8 | 254 | 241 |
| 12 x 12 x 8 | 323.8 | 254 | 229 |
| 12 x 12 x 6 | 323.8 | 254 | 219 |
| 12 x 12 x 5 | 323.8 | 254 | 216 |
| 14 | 355.6 | 279 | 279 |
| 16 | 406.4 | 305 | 305 |
| 18 | 457.0 | 343 | 343 |
| 20 | 508.0 | 381 | 381 |
| 22 | 559.0 | 419 | 419 |
| 24 | 610.0 | 432 | 432 |
| 26 | 660.0 | 495 | 495 |
| 28 | 711.0 | 521 | 521 |
| 30 | 762.0 | 559 | 559 |
| 32 | 813.0 | 597 | 597 |
| 34 | 864.0 | 635 | 635 |
| 36 | 914.0 | 673 | 673 |
| 38 | 965.0 | 711 | 711 |
| 40 | 1016.0 | 749 | 749 |
| 42 | 1067.0 | 762 | 762 |
| 44 | 1118.0 | 813 | 813 |
| 46 | 1168.0 | 851 | 851 |
| 48 | 1219.0 | 889 | 889 |
5. Manufacturing Process Flow
Our pipe tees are produced using precise hot pushing, cold forming, and machining techniques to ensure uniform wall thickness and structural stability across the entire fitting.
Raw Material Cutting → Heating → Forming (Hot Pushing / Cold Forming) → Heat Treatment → Calibration → End Beveling → Non-Destructive Testing (NDT) → Coating & Marking → Packing.
Schematic diagram of the Pipe Tee production process.