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, etc. 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″) |
| Tiêu chuẩn | 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’ |
| Kích thước | ASME/ANSI B16.9, MSS-SP-43 Loại A, MSS-SP-43 Loại B, JIS B2312, JIS B2313, ASME B16.28 |
| Lịch trình | Danh mục 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS, v.v. |
| Bán kính uốn cong | R = 1D – 10D, 15D, 20D |
| Từ | 180° Long Radius Elbow, Butt weld 180° Long Radius Elbow. |
| Vật liệu | 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 |
| Loại | Hàn đối đầu (BW) / Hàn / ERW / Chế tạo |
| 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, DIN 1.4306, DIN 1.4401, DIN 1.4404 |
| Duplex & Super Duplex Steel Buttweld 180 Degree Long Radius Elbow | ASTM A 815, ASME SA 815 UNS NO S31804, S32205. UNS S32750, S32950. Werkstoff số 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, Niken 200 (UNS số 2200), Niken 201 (UNS số 2201), Monel 400 (UNS số 4400), Monel 500 (UNS số 5500), Inconel 800 (UNS số 8800), Inconel 825 (UNS số 8825), Inconel 600 (UNS số 6600), Inconel 625 (UNS số 6625), Inconel 601 (UNS số 6601), Hastelloy C 276 (UNS số 10276), Hợp kim 20 (UNS số 8020), Titan (Cấp I & II), Đồng-Niken 70/30, CuNi10Fe1Mn, CuNi30Mn1Fe. |
Buttweld 180 Deg Long Radius Elbows Application Industries
- Petrochemical Industry
- Chemical Industry
- Ngành công nghiệp dầu khí
- 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
| Kích thước danh nghĩa của ống | Đường kính ngoài tại 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 | Trả về 180° | |||||
| Kích thước ống danh nghĩa (NPS) | Độ dày tường t / t1 | Bên ngoài Ø tại Bevel | Bên trong Ø ở cuối | Trở lại chế độ mờ mặt trước. K | Khoảng cách giữa tâm hai điểm. O | Sự thẳng hàng của các đầu U |
| 1/2 a 2 1/2 | Không | 1 | 0,8 | 7 | 7 | 1 |
| 3 a 3 1/2 | ít hơn | 1 | 1,6 | 7 | 7 | 1 |
| 4 | hơn | +2 -1 | 1,6 | 7 | 7 | 1 |
| 5 a 6 | 87,50% | +3 -1 | 1,6 | 7 | 7 | 1 |
| 8 | danh nghĩa | 2 | 1,6 | 7 | 7 | 1 |
| 10 | thickness | +4 -3 | 3,2 | 7 | 7 | 2 |
| 12 đến 18 | 3,2 | +4 -3 | 7 | 10 | 2 | |
| 20 đến 24 | 4,8 | +6 -5 | 7 | 10 | 2 | |
| từ 26 đến 30 | 4,8 | +7 -5 | ….. | ….. | ….. | |
| 32 đến 48 | 4,8 | +7 -5 | ….. | ….. | ….. | |
ASME B16.9 180° Long Radius Elbow Angularity Tolerance
| ND | Góc lệch tối đa | Tốc độ tối đa khi cất cánh |
| Q | P | |
| 1/2 đến 4 | 1 | 2 |
| 5 đến 8 | 2 | 4 |
| 10 đến 12 | 3 | 5 |
| 14 đến 16 | 3 | 7 |
| 18 đến 24 | 4 | 10 |
| từ 26 đến 30 | 5 | 10 |
| 32 đến 42 | 5 | 13 |
| 44 đến 48 | 5 | 20 |
WEIGHT CHART OF 180° DEGREE LONG RADIUS ELBOW
| NPS inch | ELBOWS LR 180° | |||
| Sch. 5S | Sch. 10S | Sch. 40 tuổi | Sch. Thập niên 80 | |
| 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 |
| Trọng lượng ước tính tính bằng kg, mật độ 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 |
Công ty TNHH Kim loại Kaixin Wenzhou








