An elbow is the pipe fittings that are used extensively as a form of connections in between two lengths of pipes for the purpose of producing the change into the flow direction into the pipe, at the angle of 180 deg, 90 deg or 45 deg. Elbow pipe fitting is also called as the bend that is available in the ranges of materials including alloy steel, carbon steel, stainless steel, nickel alloy, super duplex, duplex, and cupro-nickel, وغیرہ. 180° Long Radius Elbow is also termed as the return bend that permits the complete reversal of the flow. The distance in between the center line and end of the elbow is 3 x NPS.
Some qualities of it are High mechanical strength rugged construction, Smoothness in surface finishes, Perfect dimensional accuracy, Anti-corrosive body, and Pitting and oxidation resistance.
180 DEGREE LONG RADIUS ELBOW SPECIFICATIONS
| Outside Diameter (OD) | Seamless 180° Long Radius Elbow (1/2″～24″), ERW / Fabricated Elbow / Welded (1/2″～48″) |
| 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’ |
| Dimensions | ASME/ANSI B16.9, MSS-SP-43 Type A, MSS-SP-43 Type B, JIS B2312, JIS B2313, ASME B16.28 |
| Schedule | Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc. |
| Bending Radius | R=1D – 10D, 15D, 20D |
| From | 180° Long Radius Elbow, Butt weld 180° Long Radius Elbow. |
| Materials | 304/L/H/LN, 316/L/H/LN/Ti, 321/H, 317/L/LN, 347/H, 310S/H, N08904(904L), S31803,S32205, S32750, S32760, N02200, N02201, N04400, N06600, N06690, N06625, N06985(G3), N08028, N08800, N08810, N08811, N08825Surface,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, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404 |
| Type | Butt Weld (BW) / Welded / ERW / Fabricated |
| SS Melting Points | 1400-1450°C (WP304, WP304L), 1390-1440 °C (WP316L), 1370 – 1400 °C (WP316) |
180 DEGREE LONG RADIUS ELBOW – MATERIALS & GRADES
| Stainless Steel Buttweld 180 Degree Long Radius Elbow | ASTM A403 WP316/316L, ASTM A403 SA / A 774 WP-S, WP-W, WP-WX 304/304L, ASTM A182 F316L, 304L, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404 |
| Duplex & Super Duplex Steel Buttweld 180 Degree Long Radius Elbow | ASTM A 815, ASME SA 815 UNS NO S31803, S32205. UNS S32750, S32950. Werkstoff No. 1.4462 |
| Carbon Steel Buttweld 180 Degree Long Radius Elbow | ASTM A234, ASME SA234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70. |
| Low Temperature Carbon Steel 180 Degree Long Radius Elbow | ASTM A420 WPL3, A420 WPL6 |
| Alloy Steel Buttweld 180 Degree Long Radius Elbow | ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91 |
| Nickel Alloy Buttweld 180 Degree Long Radius Elbow | ASTM B336, ASME SB336, Nickel 200 (UNS No. No2200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II), Cupro-Nickel 70/30, CuNi10Fe1Mn, CuNi30Mn1Fe. |
Buttweld 180 Deg Long Radius Elbows Application Industries
- Petrochemical Industry
- Chemical Industry
- Oil and Gas Industry
- Pulp & Paper Indusry
- Power Plant Industry
- Food Processing Industry
- Pharmaceuticals Industry
- Energy Industry
- Aerospace Industry
DIMENSIONS OF 180 DEGREE LONG RADIUS ELBOW – ANSI 16.9
ASME B16.9 Buttweld 180° Short Radius Elbow Dimensions Drawing
| Nominal pipe size | Outside Diameter
at Bevel |
Center to Center | Back to Faces | ||||
| 180° Return | |||||||
| P | K | ||||||
| DN | INCH | Series A | Series B | LR | LR | ||
| 15 | 1/2 | 21.3 | 18 | 76 | 48 | ||
| 20 | /4 | 26.9 | 25 | 76 | 51 | ||
| 25 | 1 | 33.7 | 32 | 76 | 56 | ||
| 32 | 11/4 | 42.4 | 38 | 95 | 70 | ||
| 40 | 11/2 | 48.3 | 45 | 114 | 83 | ||
| 50 | 2 | 60.3 | 57 | 152 | 106 | ||
| 65 | 21/2 | 76.1(73) | 76 | 191 | 132 | ||
| 80 | 3 | 88.9 | 89 | 229 | 159 | ||
| 90 | 31/2 | 101.6 | – | 267 | 184 | ||
| 100 | 4 | 114.3 | 108 | 305 | 210 | ||
| 125 | 5 | 139.7 | 133 | 381 | 262 | ||
| 150 | 6 | 168.3 | 159 | 457 | 313 | ||
| 200 | 8 | 219.1 | 219 | 610 | 414 | ||
| 250 | 10 | 273.0 | 273 | 762 | 518 | ||
| 300 | 12 | 323.9 | 325 | 914 | 619 | ||
| 350 | 14 | 355.6 | 377 | 1067 | 711 | ||
| 400 | 16 | 406.4 | 426 | 1219 | 813 | ||
| 450 | 18 | 457.2 | 478 | 1372 | 914 | ||
| 500 | 20 | 508.0 | 529 | 1524 | 1016 | ||
| 550 | 22 | 559 | – | · 180 Degree Elbows – It is used when change in the direction of pipe required is 180°
· L/R – Long radius |
|||
| 600 | 24 | 610 | 630 | ||||
| 650 | 26 | 660 | – | ||||
| 700 | 28 | 711 | 720 | ||||
| 750 | 30 | 762 | – | ||||
| 800 | 32 | 813 | 820 | ||||
| 850 | 34 | 864 | – | ||||
| 900 | 36 | 914 | 920 | ||||
| 950 | 38 | 965 | – | ||||
| 1000 | 40 | 1016 | 1020 | ||||
| 1050 | 42 | 1067 | – | ||||
| 1100 | 44 | 1118 | 1120 | ||||
| 1150 | 46 | 1168 | – | ||||
| 1200 | 48 | 1220 | 1220 | ||||
DIMENSIONAL TOLERANCES OF 180 DEGREE LONG RADIUS ELBOW – ASME B16.9
| For all Pipe Fittings | 180° Returns | |||||
| Nominal Pipe Size (NPS) | Wall Thickness
t / t1 |
Outside Ø
at Bevel |
Inside Ø
at End |
Back to Face Dim.
K |
Center to Center Dim.
O |
Align- ment of Ends
U |
| 1/2 a 2 1/2 | Not | 1 | 0,8 | 7 | 7 | 1 |
| 3 a 3 1/2 | less | 1 | 1,6 | 7 | 7 | 1 |
| 4 | than | +2 -1 | 1,6 | 7 | 7 | 1 |
| 5 a 6 | 87,50% | +3 -1 | 1,6 | 7 | 7 | 1 |
| 8 | of nominal | 2 | 1,6 | 7 | 7 | 1 |
| 10 | thickness | +4 -3 | 3,2 | 7 | 7 | 2 |
| 12 a 18 | 3,2 | +4 -3 | 7 | 10 | 2 | |
| 20 a 24 | 4,8 | +6 -5 | 7 | 10 | 2 | |
| 26 a 30 | 4,8 | +7 -5 | ….. | ….. | ….. | |
| 32 a 48 | 4,8 | +7 -5 | ….. | ….. | ….. | |
ASME B16.9 180° Long Radius Elbow Angularity Tolerance
| 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 |
WEIGHT CHART OF 180° DEGREE LONG RADIUS ELBOW
| NPS
inches |
ELBOWS LR 180° | |||
| Sch.
5S |
Sch.
10S |
Sch.
40S |
Sch.
80S |
|
| 1/2 | 0.05 | 0.06 | 0.08 | 0.10 |
| 3/4 | 0.06 | 0.07 | 0.09 | 0.11 |
| 1 | 0.09 | 0.15 | 0.18 | 0.20 |
| 1 1/4 | 0.13 | 0.20 | 0.25 | 0.35 |
| 1 1/2 | 0.18 | 0.30 | 0.40 | 0.50 |
| 2 | 0.30 | 0.50 | 0.70 | 0.90 |
| 2 1/2 | 0.60 | 0.85 | 1.35 | 1.80 |
| 3 | 0.90 | 1.30 | 2.00 | 2.90 |
| 4 | 1.40 | 2.00 | 4.00 | 5.90 |
| 5 | 2.90 | 3.60 | 6.50 | 9.70 |
| 6 | 4.00 | 5.00 | 10.5 | 16.0 |
| 8 | 7.40 | 10.0 | 21.5 | 33.5 |
| 10 | 13.6 | 16.8 | 38.5 | 52.5 |
| 12 | 23.4 | 27.0 | 59.0 | 79.0 |
| 14 | 29.0 | 35.0 | 70.0 | 94.0 |
| 16 | 41.3 | 47.0 | 95.0 | 125 |
| 18 | 51.8 | 59.0 | 120 | 158 |
| 20 | 73.0 | 85.0 | 146 | 194 |
| 24 | 122 | 140 | 210 | 282 |
| Approximate weights in kg, density 8 kg/dm3 | ||||
AVAILABLE TYPES OF 180 DEGREE LONG RADIUS ELBOW
| Buttweld 180° Long Radius Elbow | Duplex Steel Buttweld 180° Long Radius Elbow |
| ASME B16.9 Butt weld 180° Long Radius Elbow | High Nickel Alloy 180° Long Radius Elbow |
| Stainless Steel 180° Long Radius Elbow | SS 180° Long Radius Elbow |
| High Quality 180° Long Radius Elbow | Seamless Butt weld 180° Long Radius Elbow |
| Welded Butt weld 180° Long Radius Elbowr | ASME B16.28 Buttweld 180° Long Radius Elbow |
| Carbon Steel 180° Long Radius Elbow | ANSI B16.9 Buttweld 180° Long Radius Elbow |
| Titanium Buttweld 180° Long Radius Elbow | Inconel Butt weld 180° Long Radius Elbow |
| ASTM A403 Stainless Steel 180° Long Radius Elbow | Butt Weld B16.9 180° Long Radius Elbow |
| Super Duplex Steel Buttweld 180° Long Radius Elbow | Copper Nickel 180° Long Radius Elbow |
| Steel 180° Long Radius Elbow | Hastelloy 180° Long Radius Elbow |
