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EN 1092-1 PN-250 Flanges

DIN EN 1092-1 PN-250 Flange
 

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Types of flanges (typ) up to DIN EN 1092-1
 
Typ 01: Plate (slip-on) flanges for welding Typ 13: Hubbed threaded flanges
Typ 02: Loose plate flanges with weld-on plate collar Typ 21: Integral flanges
Typ 04: Loose plate flanges with weld-neck collar Typ 32: Weld-on plate collars
Typ 05: Blank (blind) flanges Typ 33: Lapped pipe ends
Typ 11: Weld-neck flanges Typ 34: Weld-neck collars
Typ 12: Hubbed slip-on flanges for welding  
 
D: Outside Diameter
K: Diameter of Bolt Circle
L: Diameter of Bolt Hole
  A: Outside Diameter of Neck
E: Chamfer
F: Collar thickness
  G max: Diameter of Shoulders
R: Corner Radius
N: Neck Diameter
S: Neck Thickness (Preferred value)
DN Mating dimensions A Flange Thickness Length Neck 
Diameters
R1 S
D K L Bolting
No Size C2 C3 H2 H3 N1 N3
Flange type
11, 21 11
21*
11 21 11 11 11 21 11 21 11
10 125 85 18 4 M16 - - 24 - - - 46 - 4 -
15 130 90 18 4 M16 21.3 26 26 60 6 48 52 4 4 2.6
25 150 105 22 4 M20 33.7 28 28 65 8 60 63 4 4 3.6
40 185 135 26 4 M24 48.3 34 34 80 10 80 90 6 4 5.0
50 200 150 26 4 M24 60.3 38 38 85 10 84 102 6 5 6.3
65 230 180 26 8 M24 76.1 42 42 95 12 95 125 6 5 8.0
80 255 200 30 8 M27 101.6 46 46 102 12 136 142 8 5 11.0
100 300 235 33 8 M30 127.0 54 54 120 14 164 168 8 6 14.2
125 340 275 33 8 M30 152.4 60 60 140 16 200 207 8 6 16.0
150 390 320 36 12 M33 177.8 68 68 160 18 240 246 10 8 17.5
200 485 400 42 12 M39 244.5 82 82 1900 25 305 314 10 8 25.0
250 585 490 48 16 M45 298.5 100 100 215 30 385 394 12 10 32.0
300 690 590 52 16 M48 - - 120 - - - 480 - 10 -

* For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter.

* For flanges type 21

* For flanges type 11 use flanges PN 320

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