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
| 표준 | 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 |
| 일정 | 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS 등. |
| 사이즈 | Seamless 45° Long Radius Elbow Size: 1/2″~24″ ERW / Welded / Fabricated 45° Long Radius Elbow Size: 1/2″ (15 NB) to 48″ (1200NB) |
| 성적 | 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 |
| 유형 | Butt Weld (BW) / Welded / ERW / Fabricated |
| 차원 | 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 WP316/316L, 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 45 Degree Long Radius Elbow | ASTM A 815, ASME SA 815, UNS 번호 S31803, S32205. UNS S32750, S32950. Werkstoff 번호 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 및 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 등급 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, 니켈 200 (UNS 번호 N02200), 니켈 201 (UNS 번호 N02201), 모넬 400 (UNS 번호 N04400), 모넬 500 (UNS 번호 N05500), 인코넬 800 (UNS 번호 N08800), 인코넬 825 (UNS 번호 N08825), 인코넬 600 (UNS 번호 N06600), 인코넬 625 (UNS 번호 N06625), 인코넬 601 (UNS 번호 N06601), 하스텔로이 C 276(UNS 번호 N10276), 알로이 20(UNS 번호 N08020), 티타늄(I급 및 II급), 구리-니켈 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 치수

Buttweld 45 Degree Long Radius Elbow Dimension Drawing
| NPS | O.D. D | 90 degrees Long Radius 센터-투-엔드 A | 45 degrees Long Radius 센터-투-엔드 B | 90 degrees 3D 센터-투-엔드 A | 45 degrees 3D 센터-투-엔드 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 | |||||||
| 모든 피팅용 | Elbows 90/45 deg | 180° Returns | |||||
| 공칭 파이프 크기(NPS) | Outside Ø Bevel에서 | Inside Ø 끝에서 | 벽 두께 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, 2 1/2 | 1 | 0,8 | 아니다 | 2 | 7 | 7 | 1 |
| 3에서 3½ | 1 | 1,6 | 더 적게 | 2 | 7 | 7 | 1 |
| 4 | +2 -1 | 1,6 | 보다 | 2 | 7 | 7 | 1 |
| 5와 6 | +3 -1 | 1,6 | 87,50% | 2 | 7 | 7 | 1 |
| 8 | 2 | 1,6 | 명목상의 | 2 | 7 | 7 | 1 |
| 10 | +4 -3 | 3,2 | 두께 | 2 | 7 | 7 | 2 |
| 12에서 18까지 | +4 -3 | 3,2 | 3 | 10 | 7 | 2 | |
| 20부터 24까지 | +6 -5 | 4,8 | 3 | 10 | 7 | 2 | |
| 26~30 | +7 -5 | 4,8 | 3 | ….. | ….. | ….. | |
| 32에서 48까지 | +7 -5 | 4,8 | 5 | ….. | ….. | ….. | |
ANGULARITY TOLERANCES OF 45 DEGREE LONG RADIUS ELBOW
| Angularity Tolerances | ||
| ND | 최대 이탈 각도 | 맥스, 비행기에서 내림 |
| Q | P | |
| 1/2의 4 | 1 | 2 |
| 5에서 8까지 | 2 | 4 |
| 10에서 12 | 3 | 5 |
| 14~16 | 3 | 7 |
| 18~24 | 4 | 10 |
| 26~30 | 5 | 10 |
| 32~42 | 5 | 13 |
| 44~48 | 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 무게 in LBS and KG
| Type-> | SCHEDULE STD | SCHEDULE XS |
| NPS | 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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