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External arc length of elbow

ASME16.28、ASME16.9
外径 inch 公称通径 DN 中心至端面   大面长 中心至中心 背部至端面 大面长
45º 大面长 90º   180º
中心高H 中心高F 全高   中心高F 全高 P K
长半径 长半径 大面长 短半径 长半径 短半径 长半径 大面长 短半径
21.3 1/2" 15 16 42 38 48.65 76.3805       76   48 150.72    
26.7 3/4" 20 16 46 38 51.35 80.6195       76   51 160.14    
33.4 1" 25 16 51 38 54.7 85.879 25 16.7 65.469 76 51 56 175.84 41 128.74
42.2 11/4" 32 20 65 48 69.1 108.487 32 21.1 83.367 95 64 70 219.8 52 163.28
48.3 11/2" 40 24 76 57 81.15 127.4055 38 24.15 97.5755 114 76 83 260.62 62 194.68
60.3 2" 50 32 98 76 106.15 166.6555 51 30.15 127.4055 152 102 106 332.84 81 254.34
73 21/2" 65 40 120 95 131.5 206.455 64 36.5 157.785 191 127 132 414.48 100 314
88.9 3" 80 47 144 114 158.45 248.7665 76 44.45 189.1065 229 152 159 499.26 121 379.94
101.6 31/2" 90 55 166 133 183.8 288.566 89 50.8 219.486 267 178 184 577.76 140 439.6
114.3 4" 100 63 189 152 209.15 328.3655 102 57.15 249.8655 305 203 210 659.4 159 499.26
141.3 5" 125 79 235 190 260.65 409.2205 127 70.65 310.3105 381 254 262 822.68 197 618.58
168.3 6" 150 95 281 229 313.15 491.6455 152 84.15 370.7555 457 305 313 982.82 237 744.18
219.1 8" 200 126 370 305 414.55 650.8435 203 109.55 490.7035 610 406 414 1299.96 313 982.82
273 10" 250 158 462 381 517.5 812.475 254 136.5 613.085 762 508 518 1626.52 391 1227.74
323.9 12" 300 189 551 457 618.95 971.7515 305 161.95 733.1115 914 610 619 1943.66 467 1466.38
355.6 14" 350 221 626 533 710.8 1115.956 356 177.8 838.066 1067 711 711 2232.54 533 1673.62
406.4 16" 400 253 716 610 813.2 1276.724 406 203.2 956.444 1219 813 813 2552.82 610 1915.4
457 18" 450 284 805 686 914.5 1435.765 457 228.5 1076.235 1372 914 914 2869.96 686 2154.04
508 20" 500 316 895 762 1016 1595.12 508 254 1196.34 1524 1016 1016 3190.24 762 2392.68
559 22" 550 347 984 838.2 1117.7 1754.789 559 279.5 1316.445 1676 1118 1118 3510.52 838 2631.32
610 24" 600 379 1074 914.4 1219.4 1914.458 610 305 1436.55 1829 1219 1219 3827.66 914 2869.96
660 26" 650 410 1162 990.6 1320.6 2073.342 660 330 1554.3            
711 28" 700 442 1252 1066.8 1422.3 2233.011 711 355.5 1674.405            
762 30" 750 473 1341 1143 1524 2392.68 762 381 1794.51            
813 32" 800 505 1431 1219.2 1625.7 2552.349 813 406.5 1914.615            
864 34" 850 537 1521 1295.4 1727.4 2712.018 864 432 2034.72            
914 36" 900 568 1609 1371.6 1828.6 2870.902 914 457 2152.47            
965.2 38" 950 600 1699.68 1447.8 1930.4 3030.728 965 482.6 2272.732            
1016 40" 1000 631 1788.23 1524 2032 3190.24 1016 508 2392.68            
1067 42" 1050 663 1878.35 1600.2 2133.6 3349.752 1067 533.4 2512.628            
1118 44" 1100 694 1966.9 1676.4 2235.2 3509.264 1118 558.8 2632.576            
1168 46" 1150 726 2057.01 1752.6 2336.8 3668.776 1168 584.2 2750.954            
1219 48" 1200 758 2147.13 1828.8 2438.4 3828.288 1219 609.6 2870.902            
1321 52" 1300 821 2325.8 1981 2641.4 4146.998 1321 660.4 3110.798            
1422 56" 1400 883 2502.89 2134 2845.2 4466.964 1420 711.2 3345.984            
1524 60" 1500 947 2683.13 2286 3048 4785.36 1524 762 3589.02            
1626 64" 1600 1010 2861.8 2438 3250.8 5103.756 1620 812.8 3819.496            
1727 68" 1700 1073 3040.46 2591 3454.6 5423.722 1727 863.6 4067.242            
4709 72" 1800 1137 5481.5 2743 5097.4 8002.918 1829 2354.4 6567.938            
1930 76" 1900 1199 3397.79 2896 3861.2 6062.084 1930 965.2 4545.464            
2032 80" 2000 1263 3578.03 3048 4064 6380.48 2032 1016 4785.36            

GB12459-90、GB13401
外径 inch 公称通径 DN 中心至端面   大面长 中心至中心 背部至端面 大面长
45º 大面长 90º   180º
中心高H 中心高F 全高   中心高F 全高 P K
长半径 长半径 大面长 短半径 长半径 短半径 长半径 大面长 短半径
18 1/2" 15 16 39 38 47 73.79       76   48 150.72    
25 3/4" 20 16 45 38 50.5 79.29       76   51 160.14    
32 1" 25 16 50 38 54 84.78 25 16 64.37 76 51 56 175.84 41 128.74
38 11/4" 32 20 61 48 67 105.2 32 19 80.07 95 64 70 219.8 52 163.28
45 11/2" 40 24 73 57 79.5 124.8 38 22.5 94.985 114 76 83 260.62 62 194.68
57 2" 50 32 95 76 104.5 164.1 51 28.5 124.82 152 102 106 332.84 81 254.34
76 21/2" 65 40 122 95 133 208.8 64 38 160.14 191 127 132 414.48 100 314
89 3" 80 47 144 114 158.5 248.8 76 44.5 189.19 229 152 159 499.26 121 379.94
108 4" 100 63 184 152 206 323.4 102 54 244.92 305 203 210 659.4 159 499.26
133 5" 125 79 228 190 256.5 402.7 127 66.5 303.8 381 254 262 822.68 197 618.58
159 6" 150 95 274 229 308.5 484.3 152 79.5 363.46 457 305 313 982.82 237 744.18
219 8" 200 126 370 305 414.5 650.8 203 109.5 490.63 610 406 414 1300 313 982.82
273 10" 250 158 462 381 517.5 812.5 254 136.5 613.09 762 508 518 1626.5 391 1227.74
325 12" 300 189 552 457 619.5 972.6 305 162.5 733.98 914 610 619 1943.7 467 1466.38
377 14" 350 221 643 533 721.5 1133 356 188.5 854.87 1067 711 711 2232.5 533 1673.62
426 16" 400 253 732 610 823 1292 406 213 971.83 1219 813 813 2552.8 610 1915.4
478 18" 450 284 821 686 925 1452 457 239 1092.7 1372 914 914 2870 686 2154.04
529 20" 500 316 911 762 1026.5 1612 508 264.5 1212.8 1524 1016 1016 3190.2 762 2392.68
630 24" 600 379 1090 914.4 1229.4 1930 610 315 1452.3 1829 1219 1219 3827.7 914 2869.96
720 28" 700 442 1259 1067 1426.8 2240 711 360 1681.5            
820 32" 800 505 1437 1219 1629.2 2558 813 410 1920.1            
920 36" 900 568 1614 1372 1831.6 2876 914 460 2157.2            
1020 40" 1000 631 1791 1524 2034 3193 1016 510 2395.8            
1120 44" 1100 694 1969 1676 2236.4 3511 1118 560 2634.5            
1220 48" 1200 758 2148 1829 2438.8 3829 1219 610 2871.5            


An elbow is a pipe fitting installed between two lengths of pipe or tubing to allow a change of direction, usually a 180° or 90° angle, though 45° elbows are also made. The ends may be machined for butt welding (SW) or socketed welding(SW) etc.

Most elbows are available in short radius or long radius variants. When the two ends differ in size, the fitting is called a reducing elbow or reducer elbow.

Elbows are categorized based on various design features as below:

Size range:
Elbow Size

Recommended type of pipe elbows:

Materials
  • Carbon steel: ASTM/ASME A234 WPB-WPC
  • Alloy steel: --WP 22-WP 5-WP 91-WP 911
  • Low temperature steel: ASTM/ASME A402 WPL 3-WPL 6
  • High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70
  • Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N
    • ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti
    • ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H
Abrasion resistant elobw
SHS-self-propagating ceramic composite steel pipe and fittings, the new generation of wearable and corrosion resistant engineering pipeline, belongs to "863" Hi-tech Plan products.

It is the ideal wearable and corrosion resistant engineering pipeline, with wear resistance 15 times higher than common steel pipe, smooth inner surface, and favorable liquor resistance.

Standards
  • GB/T12459-2005 GB/T13401-2005 GB/T10752-2005 SH/T3408-1996 SH/T3409-1996
  • SY/T0609-2006 SY/T0518-2002 SY/T0510-1998
  • DL/T695-1999 GD2000 GD87-1101
  • HG/T21635-1987 HG/T21631-1990
  • ASME B16.9-2007 ASME B16.25-2007
  • MSS SP 75-2008 MSS SP 43-2008
  • CSA Z245.11-05-2005
  • EN10253-1-1999 EN10253-2-2007 EN10253-3-2008 EN10253-4-2008
  • DIN2605-1-1992 DIN2605-2-1995
  • BS1640-1-1962 BS1640-2-1962 BS1640-3-1968 BS1640-4-1968 BS1965-1-1963
  • AFNOR NF A 49-289-1990 AFNOR NF A 49-170-1-1999 AFNOR NF A 49-170-2-2009 AFNOR NF A 49-170-3-2009
  • AFNOR NF A 49-170-4-2009 ISO3419-1981 ISO5251-1981
  • JIS B2311-2009 JIS B2312-2009 JIS B2313-2009
  • ASME B16.9 Butt weld 45 degree Long Radius Elbow Dimensions
Pipe elbows
Butt Weld Pipe Fitting Bevel
  • All welded pipe fittings have bevelled end to allow for ease of welding.
  • This bevel allows for full penetration weld in most cases.
  • There are two types of bevels;
    Plain Bevel and Compound Bevel: according to the bevel of welding pipe fittings construction .
  • ASME B16.28, Buttwelding Short Radius Elbows and Returns
Industrial Processes: Bending, squeezing, pressing, forging, machining and more ANSI/ASME B16.25, Buttwelding Ends
ANSI/ASME B16.25 Standard covers the preparation of butt welding ends of piping components to be joined into a piping system by welding.
Application of pipe elbows:

Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc.

ELL & ELLS
  1. A wing of a building at right angles to the main structure.
  2. A right-angled bend in a pipe or conduit; an elbow.


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