Home / Products / Butt-Welding Fittings / ANSI/ASME B16.9 180° Short Radius Elbow
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ANSI/ASME B16.9 180° Short Radius Elbow
| Standards: | ANSI - B 16.9 ASTM A403 - ASME SA403 - 'Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings' API 590-605 ASME B16.9 - 'Factory-Made Wrought Buttwelding Fittings'' ASME B16.25 - 'Buttwelding Ends' ASME B16.28 - 'Wrought Steel Buttwelding Short Radius Elbows and Returns' MSS SP-43 - 'Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications' |
| Schedule: | Sch 5 TO Sch XXS. |
| Sizes: | Diameters - from 21,3 to 711 mm. Wall Thickness - from 2 to 40 mm. |
| Materials: | 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, 304, 304L, 316, 316L, 304/304L, 316/316L, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404 |
| Type: | Butt Weld (BW) |
| Thickness: | Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc. |
| Dimension: | ANSI B16.9, ANSI B16.28, MSS-SP-43 Type A, MSS-SP-43 Type B, JIS B2312, JIS B2313 |
Dimensions
Dimensions Butt Weld Elbows 180° LR & SR ASME B16.9
| NPS | O.D. D |
180° Long Radius | 180° Short Radius | ||
| Center to Center O |
Back to Face K |
Center to Center O |
Back to Face K |
||
| 1/2 | 21.3 | 76 | 48 | - | - |
| 3/4 | 26.7 | 76 | 51 | - | - |
| 1 | 33.4 | 76 | 56 | 51 | 41 |
| 1¼ | 42.2 | 95 | 70 | 64 | 52 |
| 1½ | 48.3 | 114 | 83 | 76 | 62 |
| 2 | 60.3 | 152 | 106 | 102 | 81 |
| 2½ | 73 | 190 | 132 | 127 | 100 |
| 3 | 88.9 | 229 | 159 | 152 | 121 |
| 3½ | 101.6 | 267 | 184 | 178 | 140 |
| NPS | O.D. D |
180° Long Radius | 180° Short Radius | ||
| Center to Center O |
Back to Face K |
Center to Center O |
Back to Face K |
||
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| NPS | O.D. D |
180° Long Radius | 180° Short Radius | ||
| Center to Center O |
Back to Face K |
Center to Center O |
Back to Face K |
||
| 4 | 114.3 | 305 | 210 | 203 | 159 |
| 5 | 141.3 | 381 | 262 | 254 | 197 |
| 6 | 168.3 | 457 | 313 | 305 | 237 |
| 8 | 219.1 | 610 | 414 | 406 | 313 |
| 10 | 273 | 762 | 518 | 508 | 391 |
| 12 | 323.8 | 914 | 619 | 610 | 467 |
| 14 | 355.6 | 1067 | 711 | 711 | 533 |
| 16 | 406.4 | 1219 | 813 | 813 | 610 |
| 18 | 457 | 1372 | 914 | 914 | 686 |
| 20 | 508 | 1524 | 1016 | 1016 | 762 |
| 22 | 559 | 1676 | 1118 | 1118 | 838 |
| 24 | 610 | 1829 | 1219 | 1219 | 914 |
| NPS | O.D. D |
180° Long Radius | 180° Short Radius | ||
| Center to Center O |
Back to Face K |
Center to Center O |
Back to Face K |
||
Dimensions are in millimeters unless otherwise indicated. Wall thickness (t) must be specified by customer.
Dimensional Tolerances of Butt Weld Elbows 180° LR and SR ASME B16.9
| Nominal Pipe Size | 1/2 to 2½ | 3 to 3½ | 4 | 5 to 8 | 10 to 18 | 20 to 24 |
| Outside Diameter at Bevel (D) |
+ 1.6 - 0.8 |
1.6 | 1.6 | + 2.4 - 1.6 |
+ 4 - 3.2 |
+ 6.4 - 4.8 |
| Inside Diameter at End | 0.8 | 1.6 | 1.6 | 1.6 | 3.2 | 4.8 |
| Center to Center (O) | 6 | 6 | 6 | 6 | 10 | 10 |
| Back to Face (K) | 6 | 6 | 6 | 6 | 6 | 6 |
| Wall Thickness (t) | Not less than 87.5% of Nominal Wall Thickness | |||||
Dimensional tolerances are in millimeters unless otherwise indicated and are equal ± except as noted.
ELBOWS - Ansi 16.9 tolerances
| DIMENSIONAL TOLERANCES - ELBOWS | |||||||
| For all fittings | Elbows 90/45 deg | 180° Returns | |||||
| Nominal Pipe Size (NPS) | Outside Ø at Bevel |
Inside Ø at End |
Wall Thickness t / t1 |
Center to End Dim. A-B-C-M | Center to Center Dim. O |
Back to Face Dim. K |
Align- ment of Ends U |
| 1/2 a 2 1/2 | 1 | 0,8 | Not | 2 | 7 | 7 | 1 |
| 3 a 3 1/2 | 1 | 1,6 | less | 2 | 7 | 7 | 1 |
| 4 | +2 -1 | 1,6 | than | 2 | 7 | 7 | 1 |
| 5 a 6 | +3 -1 | 1,6 | 87,50% | 2 | 7 | 7 | 1 |
| 8 | 2 | 1,6 | of nominal | 2 | 7 | 7 | 1 |
| 10 | +4 -3 | 3,2 | tickness | 2 | 7 | 7 | 2 |
| 12 a 18 | +4 -3 | 3,2 | 3 | 10 | 7 | 2 | |
| 20 a 24 | +6 -5 | 4,8 | 3 | 10 | 7 | 2 | |
| 26 a 30 | +7 -5 | 4,8 | 3 | ..... | ..... | ..... | |
| 32 a 48 | +7 -5 | 4,8 | 5 | ..... | ..... | ..... | |
| Angularity Tolerances | ||
| 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 |
ELBOWS - End welding bevels
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