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We feel proud to introduce ourselves as one of the leading firms in offering a broad array of Welding Neck Flange that is offered in varied specification as per the needs of our esteemed client. Offered neck flange is manufactured from high grade quality raw material. This product can be customized as per our precious customer’s specifications. Further, we offer this product at rock bottom price to our clients.

Welding Neck Flange

Welding Neck Flange Manufacturer & Exporter

 

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Dimensions

Welding Neck Flange Manufacturer & Exporter

Dimensions & Masses of UNI 2280 PN6 WNRF FLANGE

ITALIAN STANDARDS UNI 2280 WELD NECK FLANGE RF PN 6
Directions for the designation d1 a b D f h h1 m r s Holes Screws Weight*
Rated
Diameter
External diameter
of the pipe
Kg
15 20 21 55 12 80 11 30 6 28 4 2,5 4 M 10 0,45
21,3 22,5 30 0,45
20 25 26 65 14 90 11 32 6 35 4 2,5 4 M 10 0,66
26,9 28 38 0,66
25 30 31 75 14 100 11 35 6 40 4 2,8 4 M 10 0,83
33,7 34,5 42 0,82
32 38 39 90 14 120 14 35 6 50 6 3 4 M 12 1,18
42,4 43,5 55 1,16
40 44,5 45,5 100 14 130 14 38 7 58 6 3 4 M 12 1,40
48,3 49,5 62 1,38
50 57 58 110 14 140 14 38 8 70 6 3,5 4 M 12 1,58
60,3 61,5 74 1,56
65 76,1 77 130 14 160 14 38 9 88 6 3,5 4 M 12 1,95
80 88,9 90 150 16 190 18 42 10 102 8 3,7 4 M 16 3,07
100 108 109 170 16 210 18 45 10 122 8 3,7 4** M 16 3,68
114,3 115,5 130 3,56
125 133 134 200 18 240 18 48 10 148 8 4 8 M 16 5,04
139,7 141 155 4,80
150 159 161 225 18 265 18 48 12 172 10 5 8 M 16 5,75
168,3 170,5 184 5,52
175 193,7 195,5 255 20 295 18 52 12 208 10 5 8 M 16 7,22
200 219,1 221 280 20 320 18 55 15 236 10 5 8 M 16 8,16
250 267 269 335 22 375 18 60 15 282 12 5,5 12 M 16 11,4
273 275 290 11,1
300 323,9 326 395 22 440 22 62 15 342 12 6 12 M 20 14,8
350 355,6 357,5 445 22 490 22 62 15 385 12 6,5 12 M 20 19,5
368 370 17,7
400 406,4 408,5 495 22 540 22 65 15 438 12 7 16 M 20 22,5
419 421 20,3
450 457,2 459 550 22 595 22 65 15 476 12 7,3 16 M 20 25,0
500 508 510 600 24 645 22 68 15 538 12 7,3 20 M 20 30,4
600 609,6 611,5 705 24 755 25 70 16 640 12 7,3 20 M 22 38,0
700 711,2 715 810 24 860 25 70 16 740 12 9 24 M 22 45,9
800 812,8 817 920 24 975 30 70 16 842 12 9 24 M 27 55,0
900 914,4 918 1020 26 1075 30 70 16 942 12 9 24 M 27 64,7
1000 1016 1020 1120 26 1175 30 70 16 1045 16 9 28 M 27 70,6
1200 1220 1224 1340 28 1405 33 90 20 1248 16 9 32 M 30 108
1400 1420 1424 1560 32 1630 36 90 20 1452 16 9 36 M 33 153
1600 1620 1624 1760 34 1830 36 90 20 1655 16 11 40 M 33 189
1800 1820 1824 1970 36 2045 39 100 20 1855 16 11 44 M 36 x 3 239
2000 2020 2024 2180 38 2265 42 110 25 2058 16 12 48 M 39 x 3 308
*
The weight is approximate and calculated on base 7.85 Kg/dm3
**
For oil piping the flange should have 8 holes


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