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A Plate Flange is a flat, circular disk that is welded onto the end of a pipe and allows it to be bolted to another pipe. Typically used in fuel and water pipelines, the two flange plates will be bolted together with a gasket in between them. The flange plate will have bolt holes all around the perimeter and will be used to create junctions, tees and joints.

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Dimensions

Plate Flange Manufacturer & Exporter

Dimensions & Masses of UNI 2276 PN6 Plate Flange

ITALIAN STANDARDS UNI 2276 PLATE FLANGE PN 6
Directions for the designation d1 a b D f Holes Screws Weight*
Kg
Rated
Diameter
External diameter
of the pipe
Nominal Tolerance
15 20 20,5 +0,5 55 10 80 11 4 M 10 0,34
21,3 22 0,33
20 25 25,5 65 12 90 11 4 M 10 0,51
26,9 27,5 0,50
25 30 30,5 75 12 100 11 4 M 10 0,63
33,7 34 0,61
32 38 38,5 90 14 120 14 4 M 12 1,09
42,4 43 1,05
40 44,5 45 100 14 130 14 4 M 12 1,26
48,3 49 1,23
50 57 58 110 14 140 14 4 M 12 1,38
60,3 61,5 1,35
65 76,1 77 130 14 160 14 4 M 12 1,68
80 88,9 90 150 16 190 18 4 M 16 2,63
100 108 109 +1,0 170 16 210 18 4*** M 16 3,05
114,3 115,5 2,92
125 133 134,5 200 18 240 18 8 M 16 4,11
139,7 141 3,90
150 159 160,5 225 20 265 18 8 M 16 5,16
168,3 170 4,78
175 193,7 195,5 255 22 295 18 8 M 16 6,27
200 219,1 221 280 22 320 18 8 M 16 6,91
250 267 269 335 24 375 18 12 M 16 9,53
273 275 9,04
300 323,9 326 395 24 440 22 12 M 20 12,1
350 355,6 358 445 26 490 22 12 M 20 17,0
368 370,5 15,6
400 406,4 409 +1,5 495 28 540 22 16 M 20 20,1
419 422 18,3
450 457,2 460,2 ±5 550 28 595 22 16 M 20 25,8
500 508 511 600 30 645 22 20 M 20 30,0
600 609,6 612,6 705 30 755 25 20 M 22 37,9
700 711,2 714,2 810 32 860 25 24 M 22 47,9
800 812,8 815,8 920 34 975 30 24 M 27 62,9
900 914,4 917,4 1020 36 1075 30 24 M 27 74,6
1000 1016 1019 1120 36 1175 30 28 M 27 81,9
* The weight is approximate and calculated on base 7.85 Kg/dm3
** Raw hole to be worked again according to the real external diameter of the pipe
*** For oil piping the flange should have 8 holes


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