304 and 316 stainless steel elbows Specification, dimensions
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If you are looking for reliable 304 or 316 stainless steel elbows for industrial piping, GNEE provides high-quality products manufactured according to ASME, ASTM, ANSI, and EN standards. With strict material control, precise dimensional accuracy, and competitive factory pricing, our stainless steel elbows are widely used in chemical processing, food equipment, marine systems, oil & gas pipelines, HVAC, and water treatment projects.
Elbows are pipe fittings used to change the direction of pipelines. What are the standards for elbows? Based on angle, the three most common types are 45°, 90°, and 180°. Additionally, depending on project requirements, other non-standard angle elbows such as 60° are also available. What are the various elbow standards? Market research reports on elbows show that materials include cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals, and plastics. Elbow standard tables show that, according to manufacturing processes, they can be divided into: welded elbows, stamped elbows, push-formed elbows, and cast elbows. Other names include: 90-degree elbow, right-angle bend, etc.
Specification (304 & 316 Stainless Steel Elbows)
| Specification | Details |
|---|---|
| Material Grades | ASTM A403 WP304 / WP304L / WP316 / WP316L |
| Type | 45° Elbow, 90° Elbow, 180° Return Bend |
| Manufacturing Method | Seamless / Welded |
| Standards | ASME B16.9, ASME B16.11, ANSI B16.28, MSS-SP-43 |
| Sizes (NPS) | 1/2" – 48" |
| Wall Thickness (Schedule) | SCH10S, SCH20, SCH40, SCH80, SCH160, XXS |
| Radius Options | Short Radius (SR = 1D), Long Radius (LR = 1.5D) |
| Surface Finish | Pickled, Polished, Sandblasted |
| Testing | PMI test, Hydro test, RT/UT/NDT, Dimensional check |
| End Types | Beveled Ends (BE), Plain Ends (PE) |
The following is a table of standard dimensions and specifications for elbows:
| Nominal Diameter | End Outer Diameter | Center to End Dimensions | Center to Center Dimensions (180° Elbow) | Back to End Dimensions (180° Elbow) | |||||
|---|---|---|---|---|---|---|---|---|---|
| A Series | B Series | 45° Elbow (Long Radius) | 90° Elbow (Long Radius) | 90° Elbow (Short Radius) | 180° Elbow (Long Radius) | 180° Elbow (Short Radius) | 180° Elbow (Long Radius) | 180° Elbow (Short Radius) | |
| 15 | 21.3 | 18 | 16 | 38 | – | 76 | – | 48 | – |
| 20 | 26.9 | 25 | 16 | 38 | – | 76 | – | 51 | – |
| 25 | 33.7 | 32 | 16 | 38 | 25 | 76 | 51 | 56 | 41 |
| 32 | 42.4 | 38 | 20 | 48 | 32 | 95 | 64 | 70 | 52 |
| 40 | 48.3 | 45 | 24 | 57 | 38 | 114 | 76 | 83 | 81 |
| 50 | 60.3 | 57 | 32 | 76 | 51 | 152 | 2 | 106 | 100 |
| 65 | 76.1 (73) | 76 | 40 | 95 | 64 | 191 | 127 | 132 | 121 |
| 80 | 88.9 | 89 | 47 | 114 | 76 | 229 | 152 | 159 | 159 |
| 100 | 114.3 | 108 | 63 | 152 | 2 | 305 | 203 | 210 | 197 |
| 125 | 139.7 | 133 | 79 | 190 | 127 | 381 | 254 | 262 | 237 |
| 150 | 168.3 | 159 | 95 | 229 | 152 | 457 | 305 | 313 | 313 |
| 200 | 219.1 | 219 | 126 | 305 | 203 | 60 | 406 | 414 | 391 |
| 250 | 273 | 273 | 158 | 381 | 254 | 762 | 508 | 518 | 467 |
| 300 | 323.9 | 325 | 189 | 457 | 305 | 914 | 610 | 619 | 533 |
| 350 | 355.6 | 377 | 221 | 533 | 356 | 1067 | 711 | 711 | 610 |
| 400 | 406.4 | 426 | 253 | 610 | 406 | 1219 | 813 | 813 | 686 |
| 450 | 457 | 478 | 284 | 686 | 457 | 1729 | 814 | 814 | 762 |
| 500 | 508 | 529 | 316 | 762 | 508 | 1524 | 1016 | 1016 | 762 |
| 550 | 559 | – | 343 | 838 | 559 | – | – | – | – |
| 600 | 610 | 630 | 381 | 914 | 610 | – | – | – | – |
| 650 | 660 | – | 405 | 991 | 660 | – | – | – | – |
| 700 | 711 | 720 | 438 | 1067 | 711 | – | – | – | – |
| 750 | 762 | 820 | 470 | 1143 | 762 | – | – | – | – |
| 800 | 813 | – | 502 | 1219 | 812 | – | – | – | – |
Applications of 304 & 316 Stainless Steel Elbows
Chemical & Petrochemical Pipelines
Food & Beverage Equipment
Pharmaceutical Production Systems
Water Treatment & Desalination Plants
Oil & Gas Transportation
Marine & Offshore Engineering
Steam & High-Pressure Systems
