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国标、美标弯头尺寸

inch 公称通径 DN 中心至端面 中心至中心 背部至端面
45º 90º 180º
中心高H 中心高F P K
长半径 长半径 短半径 长半径 短半径 长半径 短半径
1/2" 15 16 38   76   48  
3/4" 20 16 38   76   51  
1" 25 16 38 25 76 51 56 41
11/4" 32 20 48 32 95 64 70 52
11/2" 40 24 57 38 114 76 83 62
2" 50 32 76 51 152 102 106 81
21/2" 65 40 95 64 191 127 132 100
3" 80 47 114 76 229 152 159 121
31/2" 90 55 133 89 267 178 184 140
4" 100 63 152 102 305 203 210 159
5" 125 79 190 127 381 254 262 197
6" 150 95 229 152 457 305 313 237
8" 200 126 305 203 610 406 414 313
10" 250 158 381 254 762 508 518 391
12" 300 189 457 305 914 610 619 467
14" 350 221 533 356 1067 711 711 533
16" 400 253 610 406 1219 813 813 610
18" 450 284 686 457 1372 914 914 686
20" 500 316 762 508 1524 1016 1016 762
22" 550 347 838.2 559 1676 1118 1118 838
24" 600 379 914.4 610 1829 1219 1219 914
26" 650 410 990.6 660        
28" 700 442 1066.8 711        
30" 750 473 1143 762        
32" 800 505 1219.2 813        
34" 850 537 1295.4 864        
36" 900 568 1371.6 914        
38" 950 600 1447.8 965        
40" 1000 631 1524 1016        
42" 1050 663 1600.2 1067        
44" 1100 694 1676.4 1118        
46" 1150 726 1752.6 1168        
48" 1200 758 1828.8 1219        
52" 1300 821 1981 1321        
56" 1400 883 2134 1420        
60" 1500 947 2286 1524        
64" 1600 1010 2438 1620        
68" 1700 1073 2591 1727        
72" 1800 1137 2743 1829        
76" 1900 1199 2896 1930        
80" 2000 1263 3048 2032        


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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