GOST17376 Carbon Steel Seamless Reducing Tee
Commonly used welded pipe fittings, including elbow, tee, reducer (size head) and the cap, the first three are mostly used seamless steel pipe or welded steel pipe through the push system, drawing, extrusion, the latter Steel stamping from. They are achieved by nominal wall thickness (pipe number or wall thickness) to achieve strength equal to that of the pipe. As to the reinforcement of the local stress concentration, it is a matter for the manufacturer to solve. The manufacturer shall design the strength of the butt welded pipe and verify it by the verification test method.
GOST17376 Butt Welded reducing tee Specifications
| | | |
| Straight Tee | Reducing Tee | Cross |
| Nominal Diameter | Outside Diameter | Center to End | |||||
| D1 | D2 | ||||||
| DN | NPS | Series A | Series B | Series A | Series B | C | M |
| 15×15×15 | 1/2×1/2×1/2 | 21.3 | 18 | 21.3 | 18 | 25 | 25 |
| 15×15×10 | 1/2×1/2×3/8 | 21.3 | 18 | 17.3 | 14 | 25 | 25 |
| 15×15×8 | 1/2×1/2×1/4 | 21.3 | 18 | 13.7 | 10 | 25 | 25 |
| 20×20×20 | 3/4×3/4×3/4 | 26.9 | 25 | 26.9 | 25 | 29 | 29 |
| 20×20×15 | 3/4×3/4×1/2 | 26.9 | 25 | 21.3 | 18 | 29 | 29 |
| 20×20×10 | 3/4×3/4×3/8 | 26.9 | 25 | 17.3 | 14 | 29 | 29 |
| 25×25×25 | 1×1×1 | 33.7 | 32 | 33.7 | 32 | 38 | 38 |
| 25×25×20 | 1×1×3/4 | 33.7 | 32 | 26.9 | 25 | 38 | 38 |
| 25×25×15 | 1×1×1/2 | 33.7 | 32 | 21.3 | 18 | 38 | 38 |
| 32×32×32 | 1.1/4×1.1/4×1.1/4 | 42.4 | 38 | 42.4 | 38 | 48 | 48 |
| 32×32×25 | 1.1/4×1.1/4×1 | 42.4 | 38 | 33.7 | 32 | 48 | 48 |
| 32×32×20 | 1.1/4×1.1/4×3/4 | 42.4 | 38 | 26.9 | 25 | 48 | 48 |
| 32×32×15 | 1.1/4×1.1/4×1/2 | 42.4 | 38 | 21.3 | 18 | 48 | 48 |
| 40×40×40 | 1.1/2×1.1/2×1.1/2 | 48.3 | 45 | 48.3 | 45 | 57 | 57 |
| 40×40×32 | 1.1/2×1.1/2×1.1/4 | 48.3 | 45 | 42.4 | 38 | 57 | 57 |
| 40×40×25 | 1.1/2×1.1/2×1 | 48.3 | 45 | 33.7 | 32 | 57 | 57 |
| 40×40×20 | 1.1/2×1.1/2×3/4 | 48.3 | 45 | 26.9 | 25 | 57 | 57 |
| 40×40×15 | 1.1/2×1.1/2×1/2 | 48.3 | 45 | 21.3 | 18 | 57 | 57 |
| 50×50×50 | 2×2×2 | 60.3 | 57 | 60.3 | 57 | 64 | 64 |
| 50×50×40 | 2×2×1.1/2 | 60.3 | 57 | 48.3 | 45 | 64 | 60 |
| 50×50×32 | 2×2×1.1/4 | 60.3 | 57 | 42.4 | 38 | 64 | 57 |
| 50×50×25 | 2×2×1 | 60.3 | 57 | 33.7 | 32 | 64 | 51 |
| 50×50×20 | 2×2×3/4 | 60.3 | 57 | 26.9 | 25 | 64 | 44 |
| 65×65×65 | 2.1/2×2/1/2×2.1/2 | 73.0 | 76 | 73.0 | 76 | 76 | 76 |
| 65×65×50 | 2.1/2×2/1/2×2 | 73.0 | 76 | 60.3 | 57 | 76 | 70 |
| 65×65×40 | 2.1/2×2/1/2×1.1/2 | 73.0 | 76 | 48.3 | 45 | 76 | 67 |
| 65×65×32 | 2.1/2×2/1/2×1.1/4 | 73.0 | 76 | 42.4 | 38 | 76 | 64 |
| 65×65×25 | 2.1/2×2/1/2×1 | 73.0 | 76 | 33.7 | 32 | 76 | 57 |
| 80×80×80 | 3×3×3 | 88.9 | 89 | 88.9 | 89 | 86 | 86 |
| 80×80×65 | 3×3×2.1/2 | 88.9 | 89 | 73.0 | 76 | 86 | 83 |
| 80×80×50 | 3×3×2 | 88.9 | 89 | 60.3 | 57 | 86 | 76 |
| 80×80×40 | 3×3×1.1/2 | 88.9 | 89 | 48.3 | 45 | 86 | 73 |
| 80×80×32 | 3×3×1.1/4 | 88.9 | 89 | 42.4 | 38 | 86 | 70 |
| 90×90×90 | 3.1/2×3.1/2×3.1/2 | 101.6 | - | 101.6 | - | 95 | 95 |
| 90×90×80 | 3.1/2×3.1/2×3 | 101.6 | - | 88.9 | 89 | 95 | 92 |
| 90×90×65 | 3.1/2×3.1/2×2.1/2 | 101.6 | - | 73.0 | 76 | 95 | 89 |
| 90×90×50 | 3.1/2×3.1/2×2 | 101.6 | - | 60.3 | 57 | 95 | 83 |
| 90×90×40 | 3.1/2×3.1/2×1.1/2 | 101.6 | - | 48.3 | 45 | 95 | 79 |
| 100×100×100 | 4×4×4 | 114.3 | 108 | 114.3 | 108 | 105 | 105 |
| 100×100×90 | 4×4×3.1/2 | 114.3 | 108 | 101.6 | - | 105 | 102 |
| 100×100×80 | 4×4×3 | 114.3 | 108 | 88.9 | 89 | 105 | 98 |
| 100×100×65 | 4×4×2.1/2 | 114.3 | 108 | 73.0 | 76 | 105 | 95 |
| 100×100×50 | 4×4×2 | 114.3 | 108 | 60.3 | 57 | 105 | 89 |
| 100×100×40 | 4×4×1.1/2 | 114.3 | 108 | 48.3 | 45 | 105 | 86 |
| 125×125×125 | 5×5×5 | 141.3 | 133 | 141.3 | 133 | 124 | 124 |
| 125×125×100 | 5×5×4 | 141.3 | 133 | 114.3 | 108 | 124 | 117 |
| 125×125×90 | 5×5×3.1/2 | 141.3 | - | 101.6 | - | 124 | 114 |
| 125×125×80 | 5×5×3 | 141.3 | 133 | 88.9 | 89 | 124 | 111 |
| 125×125×65 | 5×5×2.1.2 | 141.3 | 133 | 73.0 | 76 | 124 | 108 |
| 125×125×50 | 5×5×2 | 141.3 | 133 | 60.3 | 57 | 124 | 105 |
| 150×150×150 | 6×6×6 | 168.3 | 159 | 168.3 | 159 | 143 | 143 |
| 150×150×125 | 6×6×5 | 168.3 | 159 | 141.3 | 133 | 143 | 137 |
| 150×150×100 | 6×6×4 | 168.3 | 159 | 114.3 | 108 | 143 | 130 |
| 150×150×90 | 6×6×3.1/2 | 1, 68.3 | - | 101.6 | - | 143 | 127 |
| 150×150×80 | 6×6×3 | 168.3 | 159 | 88.9 | 89 | 143 | 124 |
| 150×150×65 | 6×6×2.1/2 | 168.3 | 159 | 73.0 | 76 | 143 | 121 |
| 200×200×200 | 8×8×8 | 219.1 | 219 | 219.1 | 219 | 178 | 178 |
| 200×200×150 | 8×8×6 | 219.1 | 219 | 168.3 | 159 | 178 | 168 |
| 200×200×125 | 8×8×5 | 219.1 | 219 | 141.4 | 133 | 178 | 162 |
| 200×200×100 | 8×8×4 | 219.1 | 219 | 114.3 | 108 | 178 | 156 |
| 200×200×90 | 8×8×3.1/2 | 219.1 | - | 101.6 | - | 178 | 152 |
| 250×250×250 | 10×10×10 | 273.0 | 273 | 273.0 | 273 | 216 | 216 |
| 250×250×200 | 10×10×8 | 273.0 | 273 | 219.1 | 219 | 216 | 203 |
| 250×250×150 | 10×10×6 | 273.0 | 273 | 168.3 | 159 | 216 | 194 |
| 250×250×125 | 10×10×5 | 273.0 | 273 | 141.3 | 133 | 216 | 191 |
| 250×250×100 | 10×10×4 | 273.0 | 273 | 114.3 | 108 | 216 | 184 |
| 300×300×300 | 12×12×12 | 323.9 | 325 | 323.9 | 325 | 254 | 254 |
| 300×300×250 | 12×12×10 | 323.9 | 325 | 273.0 | 273 | 254 | 241 |
| 300×300×200 | 12×12×8 | 323.9 | 325 | 219.1 | 219 | 254 | 229 |
| 300×300×150 | 12×12×6 | 323.9 | 325 | 168.3 | 159 | 254 | 219 |
| 300×300×125 | 12×12×5 | 323.9 | 325 | 141.3 | 133 | 254 | 216 |
| 350×350×350 | 14×14×14 | 355.6 | 377 | 355.6 | 377 | 279 | 279 |
| 350×350×300 | 14×14×12 | 355.6 | 377 | 323.9 | 325 | 279 | 270 |
| 350×350×250 | 14×14×10 | 355.6 | 377 | 273.0 | 273 | 279 | 257 |
| 350×350×200 | 14×14×8 | 355.6 | 377 | 219.1 | 219 | 279 | 248 |
| 350×350×150 | 14×14×6 | 355.6 | 377 | 168.3 | 159 | 279 | 238 |
| 400×400×400 | 16×16×16 | 406.4 | 426 | 406.4 | 426 | 305 | 305 |
| 400×400×350 | 16×16×14 | 406.4 | 426 | 355.6 | 377 | 305 | 305 |
| 400×400×300 | 16×16×12 | 406.4 | 426 | 323.9 | 325 | 305 | 295 |
| 400×400×250 | 16×16×10 | 406.4 | 426 | 273.0 | 273 | 305 | 283 |
| 400×400×200 | 16×16×8 | 406.4 | 426 | 219.1 | 219 | 305 | 273 |
| 400×400×150 | 16×16×6 | 406.4 | 426 | 168.3 | 159 | 305 | 264 |
| 450×450×450 | 18×18×18 | 457 | 480 | 457 | 480 | 343 | 343 |
| 450×450×400 | 18×18×16 | 457 | 480 | 406.4 | 426 | 343 | 330 |
| 450×450×350 | 18×18×14 | 457 | 480 | 355.6 | 377 | 343 | 330 |
| 450×450×300 | 18×18×12 | 457 | 480 | 323.9 | 325 | 343 | 321 |
| 450×450×250 | 18×18×10 | 457 | 480 | 273.0 | 273 | 343 | 308 |
| 450×450×200 | 18×18×8 | 457 | 480 | 219.1 | 219 | 343 | 298 |
| 500×500×500 | 20×20×20 | 508 | 530 | 508 | 530 | 381 | 381 |
| 500×500×450 | 20×20×20 | 508 | 530 | 457 | 480 | 381 | 368 |
| 500×500×400 | 20×20×20 | 508 | 530 | 406.4 | 426 | 381 | 356 |
| 500×500×350 | 20×20×20 | 508 | 530 | 355.6 | 377 | 381 | 356 |
| 500×500×300 | 20×20×20 | 508 | 530 | 323.9 | 325 | 381 | 346 |
| 500×500×250 | 20×20×20 | 508 | 530 | 273.0 | 273 | 381 | 333 |
| 500×500×200 | 20×20×20 | 508 | 530 | 219.1 | 219 | 381 | 324 |
| 550×550×550 | 22×22×22 | 559 | - | 559 | - | 419 | 419 |
| 550×550×500 | 22×22×20 | 559 | - | 508 | - | 419 | 406 |
| 550×550×450 | 22×22×18 | 559 | - | 457 | - | 419 | 394 |
| 550×550×400 | 22×22×16 | 559 | - | 406.4 | - | 419 | 381 |
| 550×550×350 | 22×22×14 | 559 | - | 355.6 | - | 419 | 381 |
| 550×550×300 | 22×22×12 | 559 | - | 323.9 | - | 419 | 371 |
| 550×550×250 | 22×22×10 | 559 | - | 273.0 | - | 419 | 359 |
| 600×600×600 | 24×24×24 | 610 | 630 | 610 | 630 | 432 | 432 |
| 600×600×550 | 24×24×22 | 610 | - | 559 | - | 432 | 432 |
| 600×600×500 | 24×24×20 | 610 | 630 | 508 | 530 | 432 | 432 |
| 600×600×450 | 24×24×18 | 610 | 630 | 457 | 480 | 432 | 419 |
| 600×600×400 | 24×24×16 | 610 | 630 | 406.4 | 426 | 432 | 406 |
| 600×600×350 | 24×24×14 | 610 | 630 | 355.6 | 377 | 432 | 406 |
| 600×600×300 | 24×24×12 | 610 | 630 | 323.9 | 325 | 432 | 397 |
| 600×600×250 | 24×24×10 | 610 | 630 | 273.0 | 273 | 432 | 384 |
| 650×650×650 | 26×26×26 | 660 | - | 660 | - | 495 | 495 |
| 650×650×600 | 26×26×24 | 660 | - | 610 | - | 495 | 483 |
| 650×650×550 | 26×26×22 | 660 | - | 559 | - | 495 | 470 |
| 650×650×500 | 26×26×20 | 660 | - | 508 | - | 495 | 457 |
| 650×650×450 | 26×26×18 | 660 | - | 457 | - | 495 | 444 |
| 650×650×400 | 26×26×16 | 660 | - | 406.4 | - | 495 | 432 |
| 650×650×350 | 26×26×14 | 660 | - | 355.6 | - | 495 | 432 |
| 650×650×300 | 26×26×12 | 660 | - | 323.9 | - | 495 | 422 |
| 700×700×700 | 28×28×28 | 711 | 720 | 711 | 720 | 521 | 521 |
| 700×700×650 | 28×28×26 | 711 | - | 660 | - | 521 | 521 |
| 700×700×600 | 28×28×24 | 711 | 720 | 610 | 630 | 521 | 508 |
| 700×700×550 | 28×28×22 | 711 | - | 559 | - | 521 | 495 |
| 700×700×500 | 28×28×20 | 711 | 720 | 508 | 529 | 521 | 483 |
| 700×700×450 | 28×28×18 | 711 | 720 | 457 | 478 | 521 | 470 |
| 700×700×400 | 28×28×16 | 711 | 720 | 406.4 | 426 | 521 | 457 |
| 700×700×350 | 28×28×14 | 711 | 720 | 355.6 | 377 | 521 | 457 |
| 700×700×300 | 28×28×12 | 711 | 720 | 323.9 | 325 | 521 | 448 |
| 750×750×750 | 30×30×30 | 762 | - | 762 | - | 559 | 559 |
| 750×750×700 | 30×30×28 | 762 | - | 711 | - | 559 | 546 |
| 750×750×650 | 30×30×26 | 762 | - | 660 | - | 559 | 546 |
| 750×750×600 | 30×30×24 | 762 | - | 610 | - | 559 | 533 |
| 750×750×550 | 30×30×22 | 762 | - | 559 | - | 559 | 521 |
| 750×750×500 | 30×30×20 | 762 | - | 508 | - | 559 | 508 |
| 750×750×450 | 30×30×18 | 762 | - | 457 | - | 559 | 495 |
| 750×750×400 | 30×30×16 | 762 | - | 406.4 | - | 559 | 483 |
| 750×750×350 | 30×30×14 | 762 | - | 355.6 | - | 559 | 483 |
| 750×750×300 | 30×30×12 | 762 | - | 323.9 | - | 559 | 473 |
| 750×750×250 | 30×30×10 | 762 | - | 273.0 | - | 559 | 460 |
| 800×800×800 | 32×32×32 | 813 | 820 | 813 | 820 | 597 | 597 |
| 800×800×750 | 32×32×30 | 813 | - | 762 | - | 597 | 584 |
| 800×800×700 | 32×32×28 | 813 | 820 | 711 | 720 | 597 | 572 |
| 800×800×650 | 32×32×26 | 813 | - | 660 | - | 597 | 572 |
| 800×800×600 | 32×32×24 | 813 | 820 | 610 | 630 | 597 | 559 |
| 800×800×550 | 32×32×22 | 813 | - | 559 | - | 597 | 546 |
| 800×800×500 | 32×32×20 | 813 | 820 | 508 | 529 | 597 | 533 |
| 800×800×450 | 32×32×18 | 813 | 820 | 457 | 478 | 597 | 521 |
| 800×800×400 | 32×32×16 | 813 | 820 | 406.4 | 426 | 597 | 508 |
| 800×800×350 | 32×32×14 | 813 | 820 | 355.6 | 377 | 597 | 508 |
| 850×850×850 | 34×34×34 | 864 | - | 864 | - | 635 | 635 |
| 850×850×800 | 34×34×32 | 864 | - | 813 | - | 635 | 622 |
| 850×850×750 | 34×34×30 | 864 | - | 762 | - | 635 | 610 |
| 850×850×700 | 34×34×28 | 864 | - | 711 | - | 635 | 597 |
| 850×850×650 | 34×34×26 | 864 | - | 660 | - | 635 | 597 |
| 850×850×600 | 34×34×24 | 864 | - | 610 | - | 635 | 584 |
| 850×850×550 | 34×34×22 | 864 | - | 559 | - | 635 | 572 |
| 850×850×500 | 34×34×20 | 864 | - | 508 | - | 635 | 559 |
| 850×850×450 | 34×34×18 | 864 | - | 457 | - | 635 | 546 |
| 850×850×400 | 34×34×16 | 864 | - | 406.4 | - | 635 | 533 |
| 900×900×900 | 36×36×36 | 914 | 920 | 914 | 920 | 673 | 673 |
| 900×900×850 | 36×36×34 | 914 | - | 864 | - | 673 | 660 |
| 900×900×800 | 36×36×32 | 914 | 920 | 813 | 820 | 673 | 648 |
| 900×900×750 | 36×36×30 | 914 | - | 762 | - | 673 | 635 |
| 900×900×700 | 36×36×28 | 914 | 920 | 711 | 720 | 673 | 622 |
| 900×900×650 | 36×36×26 | 914 | - | 660 | - | 673 | 622 |
| 900×900×600 | 36×36×24 | 914 | - | 610 | - | 673 | 610 |
| 900×900×550 | 36×36×22 | 914 | - | 559 | - | 673 | 597 |
| 900×900×500 | 36×36×20 | 914 | 920 | 508 | 529 | 673 | 584 |
| 900×900×450 | 36×36×18 | 914 | 920 | 457 | 478 | 673 | 572 |
| 900×900×400 | 36×36×16 | 914 | 920 | 406.4 | 426 | 673 | 559 |
High-quality products

Reducing Tee: branch pipe outside diameter is different with main pipe outside diameters.Carbon steel reducing tee used for the piping system connection. Also known as pipe tee , straight tee or tee fitting,steel tees, a branch in the the main pipe.There are T-shaped and Y-shaped, equal tee and reducing tee, collect three branch pipe to the main pipe. The main role of the tee is to change the direction of flow.
Our packaging
Production Process
Cold Extrusion tee production process
Hot drawing tee production process
Butt tee production process

Tee workshop
Production Process
Send Inquiry to This Supplier
You May Also Like
-
A234 WPB 6Inch SCH XXS Reducing TeeNegotiableMOQ: 1 Bag
-
4 To 3 Concentric ReducersNegotiableMOQ: 1 Bag
-
GOST 17378 Concentric Reducing Pipe FittingsNegotiableMOQ: 1 Bag
-
A234 WPB Carbon Steel Eccentric ReducersNegotiableMOQ: 1 Bag
-
ANSI B16.9 STD Seamless Eccentric ReducersNegotiableMOQ: 1 Bag
-
Steel Tube End Welding CapNegotiableMOQ: 1 Bag
-
Schedule 40 Steel Pipe CapNegotiableMOQ: 1 Bag
-
ANSI B16.5 Slip On Weld Flange Class 150NegotiableMOQ: 1 Bag
-
A105 Welded Steel FlangesNegotiableMOQ: 1 Bag
-
Carbon Steel Plate FlangesNegotiableMOQ: 1 Bag









