A butt weld 45 degree long radius elbow is a type of pipe fitting that is used to change the direction of the flow in a piping system by 45 degrees. It is designed with a long radius, which means that the curvature of the elbow is relatively gentle, allowing for a smoother flow of fluid through the system. Butt weld 45 degree long radius elbows are made by welding two pipes or tubes together at a 45 degree angle, with the weld seam being flush with the surface of the elbow. They are commonly used in industries such as oil and gas, petrochemicals, and power generation to connect pipes and redirect the flow of fluids around obstacles or through corners.
Butt weld Fitting 45° Long Radius Elbow Specification
| استانداردها | ANSI/ASME :ASTM A403 / ASME SA403, ANSI B16.9, ASME B16.25, ASME B16.28, MSS SP-43.
DIN : DIN2605, DIN2615, DIN2616, DIN2617, DIN28011 EN : EN10253-1, EN10253-2 |
| برنامه | جدول ۵S، ۱۰S، ۲۰S، S10، S20، S30، STD، ۴۰S، S40، S60، XS، ۸۰S، S80، S100، S120، S140، S160، XXS و غیره. |
| اندازهها | Seamless 45° Long Radius Elbow Size: 1/2″~24″
ERW / Welded / Fabricated 45° Long Radius Elbow Size: 1/2″ (15 NB) to 48″ (1200NB) |
| نمرهها | 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 |
| نوع | جوش لب به لب (BW) / جوشکاری شده / ERW / ساختگی |
| Dimension | ANSI B16.9, ANSI B16.28, MSS-SP-43 Type A, MSS-SP-43 Type B, |
Butt weld Fitting 45° Long Radius Elbow MATERIAL & GRADES
| Stainless Steel Buttweld 45 Degree Long Radius Elbow | ASTM A403 WP316/۳۱۶ال, 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 45 Degree Long Radius Elbow | ASTM A 815، ASME SA 815 UNS NO S31803، S32205. UNS S32750، S32950. شماره Werkstoff 1.4462 |
| Carbon Steel Buttweld 45 Degree Long Radius Elbow | ASTM A234, ASME SA234 WPB, WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 و WPHY 70. |
| Low Temperature Carbon Steel 45 Degree Long Radius Elbow | ASTM A420 WPL3, A420 WPL6 |
| Alloy Steel Buttweld 45 Degree Long Radius Elbow | ASTM / ASME A/SA 234 گریدهای WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91 |
| Nickel Alloy Buttweld 45 Degree Long Radius Elbow | ASTM B336, ASME SB336, نیکل 200 (شماره UNS No. No2200), نیکل 201 (شماره UNS N02201), مونل 400 (شماره UNS N04400), مونل ۵۰۰ (UNS شماره N05500)، اینکونل ۸۰۰ (UNS شماره N08800)، اینکونل ۸۲۵ (UNS شماره N08825)، اینکونل ۶۰۰ (UNS شماره N06600)، اینکونل ۶۲۵ (شماره UNS N06625)، اینکونل ۶۰۱ (شماره UNS N06601)، Hastelloy C 276 (UNS شماره N10276)، آلیاژ 20 (UNS شماره N08020)، تیتانیوم (کلاس I و II)، مس-نیکل 70/30، CuNi10Fe1Mn، CuNi30Mn1Fe. |
Applications of 45 DEGREE LONG RADIUS ELBOW
- Stainless Steel 45° Long Radius Elbow uses in Oil and Gas Pipeline
- 45° Buttweld LR Elbow uses in Chemical Industry
- Alloy Steel 45° Long Radius Elbow uses in Plumbing
- 45° Long Radius Elbow Pipe Fittings uses in Food Processing Industry
- Buttweld 45° LR Elbow uses in Structural Pipe
- ANSI B16.9 Buttweld 45° Long Radius Elbow uses in Power Plant
- 45° Long Radius Pipe Elbow uses in Paper & Pulp Industry
- 45 Deg Long Radius Bend uses in Heating
- 45 Degree Long Radius Reducing Elbow uses in Water Supply Systems
- ASME B16.9 Long Radius 45 Deg Elbow uses in General Purpose Applications
- 45° LR Elbow uses in Fabrication Industry
45 Deg Long Radius Elbow ابعاد

Buttweld 45 Degree Long Radius Elbow Dimension Drawing
| سود خالص عملیاتی | ساعت اضافهکاری.
D |
90 degrees
Long Radius Center-to-End A |
45 degrees
Long Radius Center-to-End B |
90 degrees
3D Center-to-End A |
45 degrees
3D Center-to-End B |
| 1/2 | 21.3 | 38 | 16 | – | – |
| 3/4 | 26.7 | 38 | 19 | 57 | 24 |
| 1 | 33.4 | 38 | 22 | 76 | 31 |
| 1 ¼ | 42.2 | 48 | 25 | 95 | 39 |
| 1 ½ | 48.3 | 57 | 29 | 114 | 47 |
| 2 | 60.3 | 76 | 35 | 152 | 63 |
| 2 ½ | 73 | 95 | 44 | 190 | 79 |
| 3 | 88.9 | 114 | 51 | 229 | 95 |
| 3 ½ | 101.6 | 133 | 57 | 267 | 111 |
| 4 | 114.3 | 152 | 64 | 305 | 127 |
| 5 | 141.3 | 190 | 79 | 381 | 157 |
| 6 | 168.3 | 229 | 95 | 457 | 189 |
| 8 | 219.1 | 305 | 127 | 610 | 252 |
| 10 | 273 | 381 | 159 | 762 | 316 |
| 12 | 323.8 | 457 | 190 | 914 | 378 |
| 14 | 355.6 | 533 | 222 | 1067 | 441 |
| 16 | 406.4 | 610 | 254 | 1219 | 505 |
| 18 | 457 | 686 | 286 | 1372 | 568 |
| 20 | 508 | 762 | 318 | 1524 | 632 |
| 22 | 559 | 838 | 343 | 1676 | 694 |
| 24 | 610 | 914 | 381 | 1829 | 757 |
| 26 | 660 | 991 | 406 | 1981 | 821 |
| 28 | 711 | 1067 | 438 | 2134 | 883 |
| 30 | 762 | 1143 | 470 | 2286 | 964 |
| 32 | 813 | 1219 | 502 | 2438 | 1010 |
| 34 | 864 | 1295 | 533 | 2591 | 1073 |
| 36 | 914 | 1372 | 565 | 2743 | 1135 |
| 38 | 965 | 1448 | 600 | 2896 | 1200 |
| 40 | 1016 | 1524 | 632 | 3048 | 1264 |
| 42 | 1067 | 1600 | 660 | 3200 | 1326 |
| 44 | 1118 | 1676 | 695 | 3353 | 1389 |
| 46 | 1168 | 1753 | 727 | 3505 | 1453 |
| 48 | 1219 | 1829 | 759 | 3658 | 1516 |
DIMENSIONAL TOLERANCES OF 45 DEGREE LONG RADIUS ELBOW – ASME B16.9
| DIMENSIONAL TOLERANCES – ELBOWS | |||||||
| برای تمام اتصالات | Elbows 90/45 deg | 180° Returns | |||||
| اندازه نامی لوله (NPS) | Outside Ø
at Bevel |
Inside Ø
at End |
ضخامت دیوار
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 |
| یک و نیم از دو و نیم | 1 | 0,8 | نه | 2 | 7 | 7 | 1 |
| ۳ تا ۳ و نیم | 1 | 1,6 | کمتر | 2 | 7 | 7 | 1 |
| 4 | +2 -1 | 1,6 | از | 2 | 7 | 7 | 1 |
| پنج تا شش | +3 -1 | 1,6 | 87,50% | 2 | 7 | 7 | 1 |
| 8 | 2 | 1,6 | اسمی | 2 | 7 | 7 | 1 |
| 10 | +4 -3 | 3,2 | تکپستی | 2 | 7 | 7 | 2 |
| ۱۲ تا ۱۸ | +4 -3 | 3,2 | 3 | 10 | 7 | 2 | |
| ۲۰ تا ۲۴ | +6 -5 | 4,8 | 3 | 10 | 7 | 2 | |
| ۲۶ تا ۳۰ | +7 -5 | 4,8 | 3 | ….. | ….. | ….. | |
| ۳۲ و ۴۸ | +7 -5 | 4,8 | 5 | ….. | ….. | ….. | |
ANGULARITY TOLERANCES OF 45 DEGREE LONG RADIUS ELBOW
| Angularity Tolerances | ||
| بدون نتیجه | حداکثر زاویه خروجی | حداکثر خارج از صفحه |
| Q | P | |
| یک و نیم از چهار | 1 | 2 |
| پنج تا هشت | 2 | 4 |
| ۱۰ تا ۱۲ | 3 | 5 |
| ۱۴ تا ۱۶ | 3 | 7 |
| ۱۸ تا ۲۴ | 4 | 10 |
| ۲۶ تا ۳۰ | 5 | 10 |
| ۳۲ تا ۴۲ | 5 | 13 |
| ۴۴ تا ۴۸ | 5 | 20 |
AVAILABLE TYPES OF 45 DEGREE LONG RADIUS ELBOW
| Buttweld 45° Long Radius Elbow | Duplex Steel Buttweld 45° Long Radius Elbow |
| ASME B16.9 Butt weld 45° Long Radius Elbow | High Nickel Alloy 45° Long Radius Elbow |
| Stainless Steel 45° Long Radius Elbow | SS 45° Long Radius Elbow |
| High Quality 45° Long Radius Elbow | Seamless Butt weld 45° Long Radius Elbow |
| Welded Butt weld 45° Long Radius Elbowr | ASME B16.28 Buttweld 45° Long Radius Elbow |
| Carbon Steel 45° Long Radius Elbow | ANSI B16.9 Buttweld 45° Long Radius Elbow |
| Titanium Buttweld 45° Long Radius Elbow | Inconel Butt weld 45° Long Radius Elbow |
| ASTM A403 Stainless Steel 45° Long Radius Elbow | Butt Weld B16.9 45° Long Radius Elbow |
| Super Duplex Steel Buttweld 45° Long Radius Elbow | Copper Nickel 45° Long Radius Elbow |
| Steel 45° Long Radius Elbow | Hastelloy 45° Long Radius Elbow |
WEIGHT OF 45 Deg Long Radius Elbow
Buttweld Elbow Weight in LBS and KG
| Type-> | SCHEDULE STD | SCHEDULE XS |
| سود خالص عملیاتی | LBS | KG | LBS | KG |
| 1/2 | 0.09 | 0.04 | 0.19 | 0.09 |
| 3/4 | 0.09 | 0.04 | 0.19 | 0.09 |
| 1 | 0.25 | 0.11 | 0.31 | 0.14 |
| 1 ¼ | 0.38 | 0.17 | 0.5 | 0.23 |
| 1 ½ | 0.4 | 0.18 | 0.69 | 0.31 |
| 2 | 0.81 | 0.37 | 1.19 | 0.54 |
| 2 ½ | 1.75 | 0.79 | 2.13 | 0.97 |
| 3 | 2.63 | 1.19 | 3.5 | 1.59 |
| 3 ½ | 3.5 | 1.59 | 4.5 | 2.04 |
| 4 | 4.5 | 2.04 | 6.1 | 2.77 |
| 5 | 7.5 | 3.4 | 10.7 | 4.85 |
| 6 | 12 | 5.44 | 17.5 | 7.94 |
| 8 | 23 | 10.43 | 35 | 15.88 |
| 10 | 43 | 19.5 | 53 | 24.04 |
| 12 | 62 | 28.12 | 84 | 38.1 |
| 14 | 80 | 36.29 | 100 | 45.36 |
| 16 | 100 | 45.36 | 135 | 61.23 |
| 18 | 126 | 57.15 | 167 | 75.75 |
| 20 | 160 | 72.57 | 206 | 93.44 |
| 22 | 197 | 89.36 | 260 | 117.93 |
| 24 | 238 | 107.95 | 300 | 136.08 |
| 26 | 275 | 124.74 | 365 | 165.56 |
| 30 | 367 | 166.47 | 488 | 221.35 |
| 36 | 531 | 240.86 | 706 | 320.24 |
45 Degree Elbow Cutting Formula
- R1 = elbow radius marking 1
- R2 = elbow radius marking 2
- R3 = elbow radius marking 3
EC = Elbow Center
OD = Outside Daimeter
R2 = Both Side Radius Marking
45 Degree Elbow Take Off Formula
(R1) – tan x 1 x (EC – 1/2 OD) x Deg = answar
(R2) – tan x 1 x EC … x Deg = answar
(R3) – tan x 1 (EC + 1/2 OD) x deg = answar
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