Steel Pipe Fittings And Flanges Suppliers In UAE, Qatar, Kuwait, Oman, Malaysia, Canada, Venezuela, USA.

UNI Flange Dimensions Series 1300 And 400

Check How To Install A UNI Flange?, KOC Approved Ductile Iron UNI Flanges Manufacturer In India.

UNI Flange Dimensions

UNI Flange Dimensions

Stainless Steel Uni Flange

Stainless Steel Uni Flange

Ductile Iron Uni Flange

Ductile Iron Uni Flange


What Is A UNI Flange?


Using UNI Flange Dimensions eliminates the problems of pre-engineered and prefabricated piping systems. Hence, pipe fabrication could be performed on site, with the help of a plain end pipe, a pipe cutter as well as a wrench. Further using a flange uni pn40 blind requires no threading, welding or grooving. The uni slip on flanges additionally also eliminates the need to rely on both off-site fabricators and dependence on machine shops. The guarnizioni flanges uni is considered to be ideal for projects which involve not only retro-fitting but also renovation of existing piping systems. Since, using a di uni flanges keeps the project on-going, a considerable down time savings is noticed.

UNI Flange Series 1400

UNI Flange Series 1400

UNI-flange Series 200

UNI-flange Series 200

UNI Flange For Steel Pipe

UNI Flange For Steel Pipe


How To Install A UNI Flange

How To Install A UNI Flange?

flange uni pn16 dimensions in mm may be freely rotated before any of the flange bolts are to be inserted and tightened. This in turn facilitates bolt hole alignment along with the facing flange, which proves to be beneficial. Generally, Pre-fabricated piping systems tend to not offer this advantage on installation.


What Is The Purpose Of A UNI Flange For Ductile Iron Pipe?

Unlike conventionally used threaded or welded flanges, the uni flange series 1400 permits for pipe deflection during installation, which means that the uni flange torque is able to make a connection when other means fail. The Stainless Steel Uni Flange offers built-in end restraint, without tie rods or other forms of anchoring, which were deemed necessary for normal working pressures. Although special considerations could be required for pump surges.


UNI Flange


UNI Flanges Dimensions

uni flanges dimensions

Directions for the designation d1 a b D f Holes Screws Weight*
Kilogram
Rated
Dia.
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

UNI Flange Technical Data Info

Des. Rated Pressure / Presión Nominal / Nenndruck (in bar) (1 bar = 14.5 psi)
1 2.5 6 10 16 25 40 64 100 160 250 320 400
DIN
Blind (BLRF) Flanges 6091 6092 6093 6094 6095 6096 6097 6098 6099
Flat (FF) flange for welding (slip-on) 2276 2277 2278 6083 6084
Welding neck (wnrf) flanges 2280 2281 2282 2283 2284 2285 2286
Lap joint flanges, Plain collars 6088 6089 6090 
Loose flanges and rings for welding
Loose flanges and rings with neck for welding
Oval plain threaded flanges
Oval flanges, with neck threaded
NPT flanges with neck 2253 2254
Long neck weld flanges
Hubbed slip-on (sorf) flanges for welding

UNI 2277 PN10 Plate Flange Dimensions

UNI 2277 Pn 10 Plate Flange
Designation Directions d1 a b D f Holes screws Weight in Kg
Rated
Dia.
External dia.
of the pipe
Nominal Dimensional Tolerance Kilogram
15 20 20,5 +0,5 65 12 95 14 4 M 12 0,67
21,3 22 0,66
20 25 25,5 75 14 105 14 4 M 12 0,83
26,9 27,5 0,82
25 30 30,5 85 14 115 14 4 M 12 1,03
33,7 34 1,01
32 38 38,5 100 16 140 18 4 M 16 1,66
42,4 43 1,63
40 44,5 45 110 16 150 18 4 M 16 1,89
48,3 49 1,85
50 57 58 125 18 165 18 4 M 16 2,51
60,3 61,5 2,46
65 76,1 77 145 18 185 18 4 M 16 3,00
80 88,9 90 160 20 200 18 4 M 16 3,61
100 108 109 +1,0 180 22 220 18 8 M 16 4,60
114,3 115,5 4,40
125 133 134,5 210 24 250 18 8 M 16 6,19
139,7 141 5,92
150 159 160,5 240 24 285 22 8 M 20 7,63
168,3 170 7,17
175 193,7 195,5 270 26 315 22 8 M 20 9,16
200 219,1 221 295 26 340 22 8 M 20 10,1
250 267 269 350 28 395 22 12 M 20 13,4
273 275 12,9
300 323,9 326 400 28 445 22 12 M 22 14,8
350 355,6 358 460 30 505 22 16 M 20 22,0
368 370,5 20,4
400 406,4 409 +1,5 515 32 565 25 16 M 22 28,0
419 422 25,9
450 457,2 460,2 ±5 565 32 615 25 20 M 22 33,3
500 508 511 620 34 670 25 20 M 22 40,3
600 609,6 612,6 725 36 780 30 20 M 27 53,0

UNI 2278 PN16 Plate Flange Dimensions

UNI 2278 PN16 Plate Flange Dimensions
Designation Directions d1 a b D f Hole screw Weight In Kg
Rated
Dia.
External dia.
of the pipe
Nominal Dimensional Tolerance Kilogram
15 20 20,5 +0,5 65 12 95 14 4 M 12 0,67
21,3 22 0,66
20 25 25,5 75 14 105 14 4 M 12 0,83
26,9 27,5 0,82
25 30 30,5 85 14 115 14 4 M 12 1,03
33,7 34 1,01
32 38 38,5 100 16 140 18 4 M 16 1,66
42,4 43 1,63
40 44,5 45 110 16 150 18 4 M 16 1,89
48,3 49 1,85
50 57 58 125 18 165 18 4 M 16 2,51
60,3 61,5 2,46
65 76,1 77 145 18 185 18 4 M 16 3,00
80 88,9 90 160 20 200 18 8** M 16 3,61
100 108 109 +1,0 180 22 220 18 8 M 16 4,60
114,3 115,5 4,40
125 133 134,5 210 24 250 18 8 M 16 6,19
139,7 141 5,92
150 159 160,5 240 24 285 22 8 M 20 7,63
168,3 170 7,17
175 193,7 195,5 270 26 315 22 8 M 20 9,16
200 219,1 221 295 26 340 22 12 M 20 9,77
250 267 269 355 32 405 25 12 M 22 16,6
273 275 16,0
300 323,9 326 410 32 460 25 12 M 22 19,3
350 355,6 358 470 36 520 25 16 M 22 29,4
368 370,5 27,3
400 406,4 409 +1,5 525 38 580 30 16 M 27 36,5
419 422 33,9

UNI 2281 PN10 Welding Neck Flange Dimensions

Uni 2281 Pn10 Weld Neck Flange Dimensions
Designation Directions d1 a b D f h h1 m r s Hole Screw Weight In KG
Rated
Dia.
External dia.
of the pipe
Kilogram
15 20 21 65 14 95 14 35 6 30 4 2,5 4 M 12 0,73
21,3 22,5 32 0,73
20 25 26 75 16 105 14 38 6 38 4 2,5 4 M 12 1,03
26,9 28 40 1,03
25 30 31 85 16 115 14 38 6 42 4 2,8 4 M 12 1,24
33,7 34,5 45 1,23
32 38 39 100 16 140 18 40 6 52 6 3 4 M 16 1,82
42,4 43,5 56 1,80
40 44,5 45,5 110 16 150 18 42 7 60 6 3 4 M 16 2,10
48,3 49,5 64 2,08
50 57 58 125 18 165 18 45 8 72 6 3,5 4 M 16 2,81
60,3 61,5 75 2,78
65 76,1 77 145 18 185 18 45 10 90 6 3,5 4 M 16 3,40
80 88,9 90 160 20 200 18 50 10 105 8 3,7 8** M 16 4,20
100 108 109 180 20 220 18 52 12 125 8 3,7 8 M 16 4,90
114,3 115,5 131 4,75
125 133 134 210 22 250 18 55 12 150 8 4 8 M 16 6,70
139,7 141 156 6,45
150 159 161 240 22 285 22 55 12 175 10 5 8 M 20 8,30
168,3 170,5 184 8,00
175 193,7 195,5 270 24 315 22 60 12 210 10 5 8 M 20 10,3
200 219,1 221 295 24 340 22 62 16 235 10 5 8 M 20 11,4
250 267 269 350 26 395 22 68 16 285 12 5,5 12 M 20 15,6
273 275 292 15,2
300 323,9 326 400 26 445 22 68 16 344 12 6 12 M 20 18,0
350 355,6 357,5 460 26 505 22 68 16 385 12 6,4 16 M 20 24,5
368 370 22,5
400 406,4 408,5 515 26 565 25 72 16 440 12 7 16 M 22 30,2
419 421 27,8
450 457,2 459 565 26 615 25 72 16 478 12 7,3 20 M 22 32,3
500 508 510 620 28 670 25 75 16 542 12 7,3 20 M 22 40,4
600 609,6 611,5 725 28 780 30 80 18 642 12 7,3 20 M 27 50,0
700 711,2 715 840 30 895 30 80 18 745 12 9 24 M 27 66,4
800 812,8 817 950 32 1015 33 90 18 850 12 9 24 M 30 89,3
900 914,4 918 1050 34 1115 33 95 20 950 12 9 28 M 30 104
1000 1016 1020 1160 34 1230 36 95 20 1052 16 9 28 M 33 121
1200 1220 1224 1380 38 1455 39 115 25 1255 16 10 32 M 36 x 3 180
1400 1420 1424 1590 42 1675 42 120 25 1460 16 11 36 M 39 x 3 248
1600 1620 1624 1820 46 1915 48 130 25 1665 16 12 40 M 45 x 3 352
1800 1820 1824 2020 50 2115 48 140 30 1868 16 13 44 M 45 x 3 433
2000 2020 2024 2230 54 2325 48 150 30 2072 16 14 48 M 45 x 3 543

UNI 2282 PN16 Welding Neck Flange Dimensions

UNI 2282 Pn16 Weld Neck Flange Dimensions
Designation Directions d1 a b D f h h1 m r s Hole Screw Weight In KG
Rated
Dia.
External dia.
of the pipe
Kilogram
15 20 21 65 14 95 14 35 6 30 4 2,5 4 M 12 0,73
21,3 22,5 32 0,73
20 25 26 75 16 105 14 38 6 38 4 2,5 4 M 12 1,03
26,9 28 40 1,03
25 30 31 85 16 115 14 38 6 42 4 2,8 4 M 12 1,24
33,7 34,5 45 1,23
32 38 39 100 16 140 18 40 6 52 6 3 4 M 16 1,82
42,4 43,5 56 1,80
40 44,5 45,5 110 16 150 18 42 7 60 6 3 4 M 16 2,10
48,3 49,5 64 2,08
50 57 58 125 18 165 18 45 8 72 6 3,5 4 M 16 2,81
60,3 61,5 75 2,78
65 76,1 77 145 18 185 18 45 10 90 6 3,5 4 M 16 3,40
80 88,9 90 160 20 200 18 50 10 105 8 3,7 8** M 16 4,20
100 108 109 180 20 220 18 52 12 125 8 3,7 8 M 16 4,90
114,3 115,5 131 4,75
125 133 134 210 22 250 18 55 12 150 8 4 8 M 16 6,70
139,7 141 156 6,45
150 159 161 240 22 285 22 55 12 175 10 5 8 M 20 8,30
168,3 170,5 184 8,00
175 193,7 195,5 270 24 315 22 60 12 210 10 5 8 M 20 10,3
200 219,1 221 295 24 340 22 62 16 235 10 5 12 M 20 11,1
250 267 269 355 26 405 25 70 16 285 12 5,5 12 M 22 16,7
273 275 292 16,3
300 323,9 326 410 28 460 25 78 16 344 12 6 12 M 22 21,8
350 355,6 357,5 470 30 520 25 82 16 390 12 6,4 16 M 22 31,7
368 370 29,2
400 406,4 408,5 525 32 580 30 85 16 445 12 7 16 M 27 38,3
419 421 37,0
450 457,2 459 585 32 640 30 85 16 485 12 7,3 20 M 27 45,4
500 508 510 650 34 715 33 90 16 548 12 7,3 20 M 30 61,1
600 609,6 611,5 770 36 840 36 95 18 652 12 7,3 20 M 33 84,6
700 711,2 715 840 36 910 39 100 18 755 12 9 24 M 33 87,4
800 812,8 817 950 38 1025 39 105 20 855 12 9 24 M 36 x 3 109
900 914,4 918 1050 40 1125 42 110 20 955 12 10 28 M 36 x 3 129
1000 1016 1020 1170 42 1255 48 120 22 1058 16 12 28 M 39 x 3 175
1200 1220 1224 1390 48 1485 48 130 30 1262 16 14 32 M 45 x 3 257
1400 1420 1424 1590 52 1685 48 145 30 1465 16 16 36 M 45 x 3 337
1600 1620 1624 1820 58 1930 56 160 35 1668 16 17 40 M 52 x 3 481
1800 1820 1824 2020 62 2130 56 170 35 1870 16 19 44 M 52 x 3 591
2000 2020 2024 2230 66 2345 62 180 40 2072 16 21 48 M 56 x 4 727

UNI 2283 PN25 Welding Neck Flange Dimensions

UNI 2283 Pn25 Weld Neck Flange Dimensions
Designation Directions d1 a b D f h h1 m r s Hole Screw Weight In KG
Rated
Dia.
External dia.
of the pipe
Kilogram
15 20 21 65 16 95 14 38 6 30 4 2,5 4 M 12 0,83
21,3 22,5 32 0,83
20 25 26 75 18 105 14 40 6 38 4 2,5 4 M 12 1,15
26,9 28 40 1,15
25 30 31 85 18 115 14 40 6 42 4 2,8 4 M 12 1,39
33,7 34,5 46 1,38
32 38 39 100 18 140 18 42 6 52 6 3 4 M 16 2,03
42,4 43,5 56 2,01
40 44,5 45,5 110 18 150 18 45 7 60 6 3 4 M 16 2,35
48,3 49,5 64 2,33
50 57 58 125 20 165 18 48 8 72 6 3,5 4 M 16 3,11
60,3 61,5 75 3.08
65 76,1 77 145 22 185 18 52 10 90 6 3,5 8 M 16 3,95
80 88,9 90 160 24 200 18 58 12 105 8 3,7 8 M 16 4,98
100 108 109 190 24 235 22 65 12 128 8 3,7 8 M 20 6,85
114,3 115,5 134 6,70
125 133 134 220 26 270 25 68 12 155 8 4 8 M 22 9,42
139,7 141 162 9,20
150 159 161 250 28 300 25 75 12 182 10 5 8 M 22 12,4
168,3 170,5 192 12,0
175 193,7 195,5 280 28 330 25 75 15 218 10 5 12 M 22 13,6
200 219,1 221 310 30 360 25 80 16 244 10 5 12 M 22 16,8
250 267 269 370 32 425 30 88 18 292 12 5,5 12 M 27 23,8
273 275 298 23,3
300 323,9 326 430 34 485 30 92 18 352 12 6 16 M 27 30,5
350 355,6 357,5 490 38 555 33 100 20 398 12 6,4 16 M 30 47,6
368 370 44,5
400 406,4 408,5 550 40 620 36 110 20 452 12 7,3 16 M 33 62,1
419 421 58,3
450 457,2 459 600 40 670 36 115 20 492 12 8 20 M 33 67,8
500 508 510 660 44 730 36 125 20 558 12 8 20 M 33 88,8
600 609,6 611,5 770 46 845 39 125 20 660 12 8 20 M 36 x 3 114
700 711,2 715 875 46 960 42 125 20 760 12 10 24 M 39 x 3 138
800 812,8 817 990 50 1085 48 135 22 865 12 11 24 M 45 x 3 185
900 914,4 918 1090 54 1185 48 145 24 968 12 12 28 M 45 x 3 224
1000 1016 1020 1210 58 1320 56 155 24 1070 16 13 28 M 52 x 3 293

UNI 2253 PN6 Threaded Flange Dimensions

UNI 2253 PN6 Threaded Flange

Uni 2253 Pn6 Threaded Flange Dimensions
Flanges Neck Raised face (RF) Screws Weight in kg
(7,85 Kg/dm3)
Rated
Dia.
d1 Thread D b k h1 d3 d4 f Number Thread d2 Kilogram
15 21,3 R 1/2 80 12 55 20 30 40 2 4 M 10 11 0,373
20 26,9 R 3/4 90 14 65 24 40 50 2 4 M 10 11 0,59
25 33,7 R 1 100 14 75 24 50 60 2 4 M 10 11 0,743
32 42,4 R 1 1/4 120 14 90 26 60 70 2 4 M 12 14 1,05
40 48,3 R 1 1/2 130 14 100 26 70 80 3 4 M 12 14 1,2
50 60,3 R 2 140 14 110 28 80 90 3 4 M 12 14 1,37
65 76,1 R 2 1/2 160 14 130 32 100 110 3 4 M 12 14 1,92
80 88,9 R 3 190 16 150 34 110 128 3 4 M 16 18 2,82
100 114,3 R 4 210 16 170 38 130 148 3 4 M 16 18 3,19
125 139,7 R 5 240 18 200 40 160 178 3 8 M 16 18 4,47
150 165,1 R 6 265 18 225 44 185 202 3 8 M 16 18 5,3

UNI 2254 PN16 Threaded Flange Dimensions

UNI 2254 PN16 Threaded Flange

UNI 2254 Pn16 Threaded Flange Dimensions
Rated
Dia.
d1 Flanges Neck Raised face (rf) Screws Weight in kg
(7,85 Kg/dm3)
Thread D b k h1 d3 d4 f Number Thread d2 Kilogram
15 21,3 R 1/2 95 14 65 20 35 45 2 4 M 12 14 0,613
20 26,9 R 3/4 105 16 75 24 45 58 2 4 M 12 14 0,91
25 33,7 R 1 115 16 85 24 52 68 2 4 M 12 14 1,1
32 42,4 R 1 1/4 140 16 100 26 60 78 2 4 M 16 18 1,6
40 48,3 R 1 1/2 150 16 110 26 70 88 3 4 M 16 18 1,78
50 60,3 R 2 165 18 125 28 85 102 3 4 M 16 18 2,43
65 76,1 R 2 1/2 185 18 145 32 105 122 3 4 M 16 18 3,18
80 88,9 R 3 200 20 160 34 118 138 3 8 M 16 18 4,12
100 114,3 R 4 220 20 180 38 140 158 3 8 M 16 18 4,47
125 139,7 R 5 250 22 210 40 168 188 3 8 M 16 18 6,13
150 165,1 R 6 285 22 240 44 195 212 3 8 M 20 22 7,92

UNI 6092 PN10 Blind Flange Dimensions

UNI 6092 PN10 Blind Flange

UNI 6092 pn10 blind flange dimensions
Rated Dia. a b D f No. of holes Thread of the screws Weight in Kilogram
15 65 14 95 14 4 M 12 0,71
20 75 16 105 14 4 M 12 1,01
25 85 16 115 14 4 M 12 1,22
32 100 16 140 18 4 M 16 1,80
40 110 16 150 18 4 M 16 2,09
50 125 18 165 18 4 M 16 2,87
65 145 18 185 18 4 M 16 3,65
80 160 20 200 18 4 M 16 4,61
100 180 20 220 18 8 M 16 5,65
125 210 22 250 18 8 M 16 8,12
150 240 22 285 22 8 M 20 10,5
175 270 24 315 22 8 M 20 14,1
200 295 24 340 22 8 M 20 16,5
250 350 26 395 22 12 M 20 24,1
300 400 26 445 22 12 M 20 30,8
350 460 26 505 22 16 M 20 39,6
400 515 26 565 25 16 M 22 49,6
450 565 26 615 25 20 M 22 58,6
500 620 28 670 25 20 M 22 75,3

UNI 6093 PN16 Blind Flange Dimensions

UNI 6093 PN16 Blind Flange

UNI 6093 Pn16 Blind Flange Dimensions
Rated Dia. a b D f No. of holes Thread of the screws Weight in Kilogram
15 65 14 95 14 4 M 12 0,71
20 75 16 105 14 4 M 12 1,01
25 85 16 115 14 4 M 12 1,22
32 100 16 140 18 4 M 16 1,80
40 110 16 150 18 4 M 16 2,09
50 125 18 165 18 4 M 16 2,87
65 145 18 185 18 4 M 16 3,65
80 160 20 200 18 8** M 16 4,61
100 180 20 220 18 8 M 16 5,65
125 210 22 250 18 8 M 16 8,12
150 240 22 285 22 8 M 20 10,5
175 270 24 315 22 8 M 20 14,1
200 295 24 340 22 12 M 20 16,2
250 355 26 405 25 12 M 22 25,1
300 410 28 460 25 12 M 22 35,2
350 470 30 520 25 16 M 22 48,2
400 525 32 580 30 16 M 27 63,5
450 585 32 640 30 20 M 27 77,2
500 650 34 715 33 20 M 30 102

Specification List Of UNI Flange For Steel Pipe And UNI 2282 PN16 Flanges Weight Calculation Formula.


Specification Chart Of UNI-Flange Series 1300

Material Specification Of : UNI Flange
Standard Cover : pressure ratings & temperature ratings, materials, marking, dimensions, weight, tolerances, testing
Contact Faces RTJ (Ring Type Joint), FF (Flat Face), RF (Raised Face), T/G (Tongue And Groove ), M/F (Male And Female)
Size Chart Normal Pipe Size 1/2 to NPS 24"
Bolt Type high strength bolts
medium strength bolts
low strength bolts
Surface Finish smooth, concentric serrated, stock
Gaskets Types Full Face Gasket
Flat Ring Gasket
Metallic Ring Gakset
Advantages Of Pipe Flange Used to Connect Pipe System
Easy Repair Pipe System
Assembled Without Welding
Materials Stainless Steel (Grade 304/L, 316/L), Carbon Steel (ASTM A105 And ASTM A350), Alloy Steel (ASTM A182), Mild Steel, Duplex Steel, Pressure Vessel Steel, Titanium, Super Duplex Steel, Nickel Alloy, Monel, Inconel, Hastelloy, Copper Nickel, Cast Iron, Wrought Iron.
Thickness Normal Pipe Size ≤ 18
Bore Diameter Normal Pipe ≤ 10
Flanges Standards EN 1092-1, JIS, ASME B16.5, ASME B16.47 type A, UNI, DIN
Pressure Rating Class 150 To Class 2500
High Temperature Above 200°C (400°F) For Class 150 Or Above 400°C (750°F)
Low Temperature Above -29 Degree C (−20°F)
Common Types Of Flanges: Slip On (SORF), Weld Neck (WNRF), Blind (BLRF), Lap Joint (Loose), Threaded (NPT), Socket-Weld (SWRF)
Special Types Of Flanges : Nipoflange, Elboflange, Latroflange, Swivel Flanges, Expanding Flanges, Reducing Flanges, Weldoflange
Marking Standard Name of Manufacturer
Schedule
Type of Flange Facing
Nominal Pipe Size
Pressure Class
ASME B16 Designation

Compare Prices Before You Buy UNI 2278 Flange In Mumbai, India And UNI 2278 Blind Flanges Pressure Rating Class.


Stainless Steel UNI Flange Pressure Rating

ASME B16.5 Pressure Pressure
Temperature (°C)
Class
Class 150Class 300Class 400Class 600Class 900Class 1500Class 2500
-29 - 38 19.8 51.7 68.9 103.4 155 259 431
50 19.5 51.7 68.9 103.4 155 259 431
100 17.7 51.5 68.7 103.0 155 258 429
150 15.8 50.2 66.8 100.3 151 251 418
200 13.8 48.6 64.8 97.2 146 243 405
250 12.1 46.3 61.7 92.7 139 232 386
300 10.2 42.9 57.0 85.7 129 214 357
325 9.3 41.4 55.0 82.6 124 207 344
350 8.4 40.0 53.4 80.0 120 200 334
375 7.4 37.8 50.4 75.7 114 189 315
400 6.5 34.7 46.3 69.4 104 174 290
425 5.5 28.8 38.4 57.5 86.3 144 240
450 4.6 23.0 30.7 46.0 69.0 115 192
475 3.7 17.1 22.8 34.2 51.3 85.4 142
500 2.8 11.6 15.4 23.2 34.7 57.9 96.5
538 1.4 5.9 7.9 11.8 17.7 29.5 49.2

UNI Flange Torque Specs

NPS Outside Diameter (O.D.) of Flange D Sectional Dimensions of Flanges Nominal Bolts Sizes
Diameter Of Bolt Circle C Diameter of Raised Face (RF) g Outside Diameter (O.D.) of Steel Pipe T b a R t d Radius r s f No. of Bolt Holes Diameter of Hole h
15 115 80 55 21.7 45 40 22 20 18 15.8 6 3.1 1 4 19 M16
20 120 85 60 27.2 45 44 27.5 20 18 21.1 6 3.2 1 4 19 M16
25 130 95 70 34 48 52 34.4 20 20 26.8 6 3.8 1 4 19 M16
32 140 105 80 42.7 52 62 43.1 30 22 35.1 6 4 2 4 19 M16
40 160 120 90 48.6 54 70 49.1 30 22 40.7 6 4.2 2 4 23 M20
50 165 130 105 60.5 57 84 61 30 22 52.2 8 4.4 2 8 19 M16
65 200 160 130 76.3 69 105 76.9 30 26 65.3 8 5.8 2 8 23 M20
80 210 170 140 89.1 73 118 89.7 30 28 76.4 8 6.1 2 8 23 M20
90 230 185 150 101.6 74 130 102 30 30 89.5 8 6.4 2 8 25 M22
100 240 195 160 114.3 76 142 115 30 32 101.5 8 6.8 2 8 25 M22
125 275 230 195 139.8 86 172 141 50 36 125.7 10 7.5 2 8 25 M22
150 325 275 235 165.2 95 202 166 50 38 150 10 8.1 2 12 27 M24
200 370 320 280 216.3 102 254 218 50 42 198.7 10 9.4 2 12 27 M24
250 450 390 345 267.4 118 312 269 50 48 247.5 12 10.6 2 12 33 M30 3
300 515 450 405 318.5 127 366 320 50 52 296.4 15 11.8 3 16 33 M30 3
350 560 495 450 355.6 134 406 357 80 54 331.8 15 12.7 3 16 33 M30 3
400 630 560 510 406.4 149 462 408 80 60 379.1 20 14.6 3 16 39 M36 3

Blind Flanges UNI 2278 PN 10 Offer Fastest Delivery, UNI Flange Gasket Chart And We Supplying Slip On Flange UNI 2277 PN16 To Overseas Customers.

UNI Flange Series 200 Thickness Calculation

UNI Flanges Wall Thickness
NPS (Normal Pipe Sizes) Outside Daimeter (O.D.) Schedule 10 Schedule 20 Schedule 30 STD Wall Schedule 40 Schedule 60 EXT Hvy Schedule 80 Schedule 100 Schedule 120 Schedule 140 Schedule 160 XX Hvy
½ 0.84 0.083 ... ... 0.109 0.109 ... 0.147 0.147 ... ... ... 0.188 0.294
¾ 1.05 0.083 ... ... 0.113 0.113 ... 0.154 0.154 ... ... ... 0.219 0.308
1 1.315 0.109 ... ... 0.133 0.133 ... 0.179 0.179 ... ... ... 0.25 0.358
1 ¼ 1.66 0.109 ... ... 0.14 0.14 ... 0.191 0.191 ... ... ... 0.25 0.382
1 ½ 1.9 0.109 ... ... 0.145 0.145 ... 0.2 0.2 ... ... ... 0.281 0.4
2 2.375 0.109 ... ... 0.154 0.154 ... 0.218 0.218 ... ... ... 0.344 0.436
2 ½ 2.875 0.12 ... ... 0.203 0.203 ... 0.276 0.276 ... ... ... 0.375 0.552
3 3.5 0.12 ... ... 0.216 0.216 ... 0.3 0.3 ... ... ... 0.438 0.6
3 ½ 4 0.12 ... ... 0.226 0.226 ... 0.318 0.318 ... ... ... ... 0.636
4 4.5 0.12 ... ... 0.237 0.237 ... 0.337 0.337 ... 0.438 ... 0.531 0.674
5 5.563 0.134 ... ... 0.258 0.258 ... 0.375 0.375 ... 0.5 ... 0.625 0.75
6 6.625 0.134 ... ... 0.28 0.28 ... 0.432 0.432 ... 0.562 ... 0.719 0.864
8 8.625 0.148 0.25 0.277 0.322 0.322 0.406 0.5 0.5 0.594 0.719 0.812 0.906 0.875
10 10.75 0.165 0.25 0.307 0.365 0.365 0.5 0.5 0.594 0.719 0.844 1 1.125 1
12 12.75 0.18 0.25 0.33 0.375 0.406 0.562 0.5 0.688 0.844 1 1.125 1.312 1
14 14 0.25 0.312 0.375 0.375 0.438 0.594 0.5 0.75 0.938 1.094 1.25 1.406 ...
16 16 0.25 0.312 0.375 0.375 0.5 0.656 0.5 0.844 1.031 1.219 1.438 1.594 ...
18 18 0.25 0.312 0.438 0.375 0.562 0.75 0.5 0.938 1.156 1.375 1.562 1.781 ...
20 20 0.25 0.375 0.5 0.375 0.594 0.812 0.5 1.031 1.281 1.5 1.75 1.969 ...
22 22 0.25 ... ... 0.375 ... ... 0.5 ... ... .... .... .... ....
24 24 0.25 0.375 0.562 0.375 0.688 0.969 0.5 1.219 1.531 1.812 2.062 2.344 ....
26 26 .... .... .... 0.375 .... .... 0.5 .... .... .... .... .... ....
30 30 0.312 0.5 0.625 0.375 .... .... 0.5 .... .... .... .... .... ....
36 36 0.312 0.5 0.625 0.375 0.75 .... 0.5 .... .... .... .... .... ....
40 40 .... .... .... 0.375 .... .... 0.5 .... .... .... .... .... ....
42 42 …….. …….. …….. 0.375 …….. …….. 0.5 …….. …….. …….. …….. …….. ……..
48 48 …….. …….. …….. 0.375 …….. …….. 0.5 …….. …….. …….. …….. …….. ……..

Refer UNI 2278 And UNI 2223 Flanges Dimensions Chart In MM And UNI Flange Coupling Adapter Thickness Calculation For Pressure Vessel.

Ductile Iron Uni Flange Bolt Size

Class 150 Flanges Class 300 Flanges Class 600 Flanges
NPS # Bolts And Studs Diameter of Bolts And Studs Stud Length # Bolts And Studs Diameter of Bolts And Studs Stud Length # Bolts And Studs Diameter of Bolts And Studs Stud Length
1/16 RF RTJ 1/16 RF RTJ 1/4 RF RTJ
1/2 4 0.50 2-1/4 4 0.50 2-1/2 3 4 0.50 3 3
3/4 4 0.50 2-1/2 4 0.63 3 3-1/2 4 0.63 3-1/2 3-1/2
1 4 0.50 2-1/2 3 4 0.63 3 3-1/2 4 0.63 3-1/2 3-1/2
1-1/4 4 0.50 2-3/4 3-1/4 4 0.63 3-1/4 3-3/4 4 0.63 3-3/4 3-3/4
1-1/2 4 0.50 2-3/4 3-1/4 4 0.75 3-1/2 4 4 0.75 4-1/4 4-1/4
2 4 0.63 3-1/4 3-3/4 8 0.63 3-1/2 4 8 0.63 4-1/4 4-1/4
2-1/2 4 0.63 3-1/2 4 8 0.75 4 4-1/2 8 0.75 4-3/4 4-3/4
3 4 0.63 3-1/2 4 8 0.75 4-1/4 4-3/4 8 0.75 5 5
3-1/2 8 0.63 3-1/2 4 8 0.75 4-1/4 5 8 0.88 5-1/2 5-1/2
4 8 0.63 3-1/2 4 8 0.75 4-1/2 5 8 0.88 5-3/4 5-3/4
5 8 0.75 3-3/4 4-1/4 8 0.75 4-3/4 5-1/4 8 1.00 6-1/2 6-1/2
6 8 0.75 4 4-1/2 12 0.75 4-3/4 5-1/2 12 1.00 6-3/4 6-3/4
8 8 0.75 4-1/4 4-3/4 12 0.88 5-1/2 6 12 1.13 7-1/2 7-3/4
10 12 0.88 4-1/2 5 16 1.00 6-1/4 6-3/4 16 1.25 8-1/2 8-1/2
12 12 0.88 4-3/4 5-1/4 16 1.13 6-3/4 7-1/4 20 1.25 8-3/4 8-3/4
14 12 1.00 5-1/4 5-3/4 20 1.13 7 7-1/2 20 1.38 9-1/4 9-1/4
16 16 1.00 5-1/4 5-3/4 20 1.25 7-1/2 8 20 1.50 10 10
18 16 1.13 5-3/4 6-1/4 24 1.25 7-3/4 8-1/4 20 1.63 10-3/4 10-3/4
20 20 1.13 6-1/4 6-3/4 24 1.25 8 8-3/4 24 1.63 11-1/4 11-1/2
24 20 1.25 6-3/4 7-1/4 24 1.50 9 10 24 1.88 13 13-1/4

UNI Flange For Steel Pipe Gasket

NPS Gasket I.D.
Gasket O.D.
Class 150 Class 300 Class 400 Class 600 Class 900
1/2 0.84 1.875 2.125 2.125 2.125 2.50
3/4 1.06 2.25 2.625 2.625 2.625 2.75
1 1.31 2.625 2.875 2.875 2.875 3.125
1 1/4 1.66 3 3.25 3.25 3.25 3.50
1 1/2 1.91 3.375 3.75 3.75 3.75 3.875
2 2.38 4.125 4.375 4.375 4.375 5.625
2 1/2 2.88 4.875 5.125 5.125 5.125 6.50
3 3.50 5.375 5.875 5.875 5.875 6.625
4 4.50 6.875 7.125 7.00 7.625 8.125
5 5.56 7.75 8.50 8.375 9.50 9.75
6 6.62 8.75 9.875 9.75 10.50 11.375
8 8.62 11 12.125 12.00 12.625 14.125
10 10.75 13.375 14.25 14.125 15.75 17.125
12 12.75 16.125 16.625 16.50 18.00 19.625

Accept All Small And Large Orders Type Of UNI Flange For Ductile Iron


Stainless Steel Uni Flange 1400

Stainless Steel Uni Flanges 1400

Carbon Steel Uni Flange Gasket

Carbon Steel Uni Flanges Gasket

Alloy Steel Uni Flange For Steel Pipe

Alloy Steel Uni Flanges For Steel Pipe

Malleable Iron Uni Flange Adapter

Malleable Iron Uni Flanges Adapter

ASTM A105 Uni Slip On Flange

ASTM A105 Uni Slip On Flanges

ASTM A694 F60 Uni 2282 Pn16 Flanges

ASTM A694 F60 Uni 2282 Pn16 Flanges

Titanium Flange Uni 2276 Pn6

Titanium Flange Uni 2276 Pn6

ASME SA105N Flange Uni Pn40 Weld Neck

ASME SA105N Flanges Uni Pn40 Weld Neck

Copper Uni Flange Torque

Copper Uni Flange Torque

ASTM A694 F42 Guarnizioni Flange Uni

ASTM A694 F42 Guarnizioni Flange Uni

Duplex Steel Uni Flange Coupling Adapter,

Duplex Steel Uni Flange Coupling Adapter,

Copper Nickel Flange Uni Pn40 Blind

Copper Nickel Flange Uni Pn40 Blind


Our SS Uni Flanges is fabricated with the wall thickness having the same dimensions of the matching pipes. These Carbon Steel Uni PN6 – PN40 Flanges meet the requirements of various industries like heavy engineering, automobile, pipeline and railways engineering. Available in standard specifications, our Ductile Iron UNI Flanges range can also be customized as per the requirements of our customer.



About Company

We Are EIL And IBR Approved Manufacturer, Exporter, Stockholder, Traders, Dealer, Importer, Wholesaler, Distributor, Supplier of Industrial Pipe Fittings & Flanges, Forgings And Fasteners In Mumbai, India.


Our Official Address

153 / 154, “A” Wing, Siddheshdeep Tower,
Shop No. A-28, Ground Floor, P.B. Marg, Near Navjivan Society,
Mumbai– 400 008 (India).


Telephone & Fax No.

Tel Number : +91 - 22 - 6743 7342,
+91 - 22 - 6659 5135
Fax Number : +91 - 22 - 66595135

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