EN 10253 / DIN 2616 Reducer Dimensions
This chart gives EN 10253-2 concentric and eccentric reducer lengths L in millimetres for each large-end and small-end size. EN 10253 replaced DIN 2616.
Teshi Group manufactures EN 10253 / DIN pattern reducers in India.
Key to dimensions
- D
- Large-end outside diameter
- D1
- Small-end outside diameter
- L
- Length end to end
EN 10253 / DIN 2616 Reducer Dimensions — tables
EN 10253-2 concentric / eccentric reducers (mm)
| DNLarge | DLarge OD | DN1Small | D1Small OD | LLength |
|---|---|---|---|---|
| 20 | 26.9 | 15 | 21.3 | 38 |
| 25 | 33.7 | 20 | 26.9 | 51 |
| 25 | 33.7 | 15 | 21.3 | 51 |
| 32 | 42.4 | 25 | 33.7 | 51 |
| 32 | 42.4 | 20 | 26.9 | 51 |
| 32 | 42.4 | 15 | 21.3 | 51 |
| 40 | 48.3 | 32 | 42.4 | 64 |
| 40 | 48.3 | 25 | 33.7 | 64 |
| 40 | 48.3 | 20 | 26.9 | 64 |
| 50 | 60.3 | 40 | 48.3 | 76 |
| 50 | 60.3 | 32 | 42.4 | 76 |
| 50 | 60.3 | 25 | 33.7 | 76 |
| 50 | 60.3 | 20 | 26.9 | 76 |
| 65 | 76.1 | 50 | 60.3 | 89 |
| 65 | 76.1 | 40 | 48.3 | 89 |
| 65 | 76.1 | 32 | 42.4 | 89 |
| 65 | 76.1 | 25 | 33.7 | 89 |
| 80 | 88.9 | 65 | 76.1 | 89 |
| 80 | 88.9 | 50 | 60.3 | 89 |
| 80 | 88.9 | 40 | 48.3 | 89 |
| 80 | 88.9 | 32 | 42.4 | 89 |
| 100 | 114.3 | 80 | 88.9 | 102 |
| 100 | 114.3 | 65 | 76.1 | 102 |
| 100 | 114.3 | 50 | 60.3 | 102 |
| 100 | 114.3 | 40 | 48.3 | 102 |
| 125 | 139.7 | 100 | 114.3 | 127 |
| 125 | 139.7 | 80 | 88.9 | 127 |
| 125 | 139.7 | 65 | 76.1 | 127 |
| 125 | 139.7 | 50 | 60.3 | 127 |
| 150 | 168.3 | 125 | 139.7 | 140 |
| 150 | 168.3 | 100 | 114.3 | 140 |
| 150 | 168.3 | 80 | 88.9 | 140 |
| 150 | 168.3 | 65 | 76.1 | 140 |
| 200 | 219.1 | 150 | 168.3 | 152 |
| 200 | 219.1 | 125 | 139.7 | 152 |
| 200 | 219.1 | 100 | 114.3 | 152 |
| 200 | 219.1 | 80 | 88.9 | 152 |
| 250 | 273 | 200 | 219.1 | 178 |
| 250 | 273 | 150 | 168.3 | 178 |
| 250 | 273 | 125 | 139.7 | 178 |
| 250 | 273 | 100 | 114.3 | 178 |
| 300 | 323.9 | 250 | 273 | 203 |
| 300 | 323.9 | 200 | 219.1 | 203 |
| 300 | 323.9 | 150 | 168.3 | 203 |
| 300 | 323.9 | 125 | 139.7 | 203 |
| 350 | 355.6 | 300 | 323.9 | 330 |
| 350 | 355.6 | 250 | 273 | 330 |
| 350 | 355.6 | 200 | 219.1 | 330 |
| 350 | 355.6 | 150 | 168.3 | 330 |
| 400 | 406.4 | 350 | 355.6 | 356 |
| 400 | 406.4 | 300 | 323.9 | 356 |
| 400 | 406.4 | 250 | 273 | 356 |
| 400 | 406.4 | 200 | 219.1 | 356 |
| 450 | 457 | 400 | 406.4 | 381 |
| 450 | 457 | 350 | 355.6 | 381 |
| 450 | 457 | 300 | 323.9 | 381 |
| 450 | 457 | 250 | 273 | 381 |
| 500 | 508 | 450 | 457 | 508 |
| 500 | 508 | 400 | 406.4 | 508 |
| 500 | 508 | 350 | 355.6 | 508 |
| 500 | 508 | 300 | 323.9 | 508 |
| 550 | 559 | 500 | 508 | 508 |
| 550 | 559 | 450 | 457 | 508 |
| 550 | 559 | 400 | 406.4 | 508 |
| 550 | 559 | 350 | 355.6 | 508 |
| 600 | 610 | 550 | 559 | 508 |
| 600 | 610 | 500 | 508 | 508 |
| 600 | 610 | 450 | 457 | 508 |
| 600 | 610 | 400 | 406.4 | 508 |
| 700 | 711 | 600 | 610 | 610 |
| 700 | 711 | 500 | 508 | 610 |
| 700 | 711 | 450 | 457 | 610 |
| 800 | 813 | 700 | 711 | 610 |
| 800 | 813 | 600 | 610 | 610 |
| 800 | 813 | 550 | 559 | 610 |
| 800 | 813 | 500 | 508 | 610 |
| 900 | 914 | 800 | 813 | 610 |
| 900 | 914 | 700 | 711 | 610 |
| 900 | 914 | 600 | 610 | 610 |
| 1000 | 1016 | 900 | 914 | 610 |
| 1000 | 1016 | 800 | 813 | 610 |
| 1000 | 1016 | 700 | 711 | 610 |
| 1200 | 1219 | 1000 | 1016 | 711 |
| 1200 | 1219 | 900 | 914 | 711 |
| 1200 | 1219 | 800 | 813 | 711 |
Notes
- All dimensions are in millimetres.
- Concentric and eccentric reducers have the same length L.
- Values are nominal, compiled from published copies of the standard; blank cells (—) are values not confirmed from the sources available. Verify against the current edition before design, purchase or fabrication.
Reference information compiled from the published standard for convenience. It does not replace the current edition of the governing standard, which takes precedence. Verify critical dimensions and properties before design, purchase or fabrication. Teshi Engineers & Sales Promoters (P) Ltd accepts no liability for errors or omissions.
Dimension finder
Pick a product, standard and size — or just type — to see every dimension and download a watermarked PDF for that one size.
EN 10253 / DIN 2616 Reducer Dimensions — size by size
Every size has its own page with a drawing, mm and inch values and a one-size PDF.
Equivalent and related standards to EN 10253 / DIN 2616 Reducer Dimensions
All equivalents| Region | Standard | Relationship |
|---|---|---|
| Europe | EN 10253-2 / EN 10253-4 | Butt-welding fittings, carbon/alloy and stainless — Type B to ASME B16.9 dimensions |
| China | GB/T 12459 | Seamless butt-welding fittings — dimensions aligned with ASME B16.9 |
| China | GB/T 13401 | Welded butt-welding fittings from plate |
| China | SH/T 3408 | Petrochemical butt-welding fittings |
| Japan | JIS B2311 / B2312 / B2313 | Butt-welding fittings for ordinary use, for pressure use, and from plate |
| USA | MSS SP-75 | High-yield butt-welding fittings for pipelines |
| USA | ASME B16.28 (withdrawn) | Short-radius elbows, now in B16.9 |
Teshi Group manufactures flanges and fittings to all of these standards on request, including Chinese GB / HG / SH and European EN dimensions for export projects. Always confirm bolting, facing and thickness when substituting one standard for another.
FAQ
EN 10253 / DIN 2616 Reducer dimensions: common questions
How long is a DN 100 × DN 50 EN 10253 reducer?
A DN 100 × DN 50 (114.3 × 60.3) reducer to EN 10253-2 is 102 mm long.
Is EN 10253 the same as DIN 2616?
EN 10253-2 / -4 replaced DIN 2616 and kept its main dimensions.
Does Teshi Group make EN 10253 reducers?
Yes — concentric and eccentric reducers to EN 10253 / DIN 2616 in carbon, alloy and stainless steel.
Related products, data sheets and standards
Butt Weld Reducer
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View online · PDF
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