BS 4504 Flanges

BS 4504 PN10 Socket Weld Flanges, BS 4504 PN 5 slip on Flanges Supplier, BS 4504 Threaded Flanges, BS4504 weld neck Flange, BS4504 Plate Flange,BS 4504 Spectacle blind Flanges Manufacturer in India.

BS 4504 is a British Standard specification for flanges, which are used to connect pipes, valves, and other equipment in piping systems. The specification covers flanges made of various materials, such as carbon steel, stainless steel, and alloy steel.

BS 4504 flanges are generally used in low-pressure and low-temperature applications, and are available in several different types, including:

Weld neck flanges (type 11): These flanges have a long tapered hub that is welded to the pipe. They are often used for high-pressure applications.

Slip-on flanges (type 12): These flanges slip over the end of the pipe and are then welded in place. They are generally used for low-pressure applications.

Blind flanges (type 05): These flanges are used to close off the end of a pipe or valve.

Threaded flanges (type 13): These flanges have internal threads that are used to screw the flange onto the pipe.

Lap joint flanges (type 02): These flanges are used with a matching stub end, which is welded to the pipe. The flange then slides over the stub end and is held in place with a lap joint.

BS 4504 flanges are manufactured to various pressure ratings, such as PN6, PN10, PN16, PN25, PN40, and PN64. The pressure rating indicates the maximum pressure that the flange can withstand at a particular temperature.

Overall, BS 4504 flanges are a popular choice for many piping applications due to their versatility, ease of installation, and wide availability.

BS 4504 Flanges Supplier

Suppliers of BS 4504 Welding Neck Flange, Ready Stock of BS 4504 Socket Weld Flange, BS 4504 PN16 Blind Flanges, Check Sizes And Dimensions Of BS4504 Forged Flanges, BS 4504 Ring Type Joint Orifice Flange.

BS 4504 Flange Specifications

Size Range

1/2" (15 NB) to 48" (1200NB) DN10~DN5000

Class / Pressure Rating

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Standards / Dimensions

ANSI/ASME B16.5, B16.36, B16.48, BS4504, BS 10, EN-1092, DIN, BS, GOST, MSS SP-44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605

Connection Type

Ring Joint Flange (RTJ), Flat Face Flange (FF), Raised Face Flange (RF), Male and Female Flange (M & F), Lap Joint Flange, Large and Small Tongue-and-Groove Flange (T & G)

BS 4504 Flanges Dimensions And Weight Chart

BS 4504 Flanges Dimensions and Tolerances BS 4504 Flange Facing Dimensions
BS 4504 Plate Flange Dimensions BS 4504 Weld Neck Flange Dimensions
BS 4504 Slip On Flange Dimensions BS 4504 Threaded Flange Dimensions
BS 4504 Blank Flange Dimensions BS 3293 Welding Neck & Slip On Flange Dimensions
BS 4504 FLANGES DIMENSIONS AND TOLERANCES
Dimension Range Tolerance
mm
Flange Facings Eccentricity of machined facing diameters < DN 100 1.0
> DN 100 2.0
a (type B facing height) 2 mm +0, -1.0
3 mm +0, -2.0
4 mm +0, -3.0
5 mm +0, -4.0
6 mm +0, -5.0
b (type C and E facing height) All +0.5, -0
b (type G facing height) All +0, -0.5
b (type H facing height, outer) All +0.2, -0
c (type D and F facing height) All +0, -0.5
d (type H facing height, inner) All +0.5, -0
B and E (facing diameters) All +0, -0.5
C and D (facing diameters) All +0.5, -0
Surface Finish Facing types A, B, E and F All, turning Ra = 3.2 µm min 12.5 µm max
All, other than turning Ra = 3.2 µm min 6.3 µm max
Facing types C, D, G and H All Ra = 0.8 µm min 3.2 µm max
Flange Drilling Details B (diameter of bolt circle) Bolt sizes M10 to M24 ±0.9
Bolt sizes M27 to M45 ±1.4
Centre to centre of adjacent bolt holes Bolt sizes M10 to M24 ±0.45
Bolt sizes M27 to M45 ±0.7
All A (outside diameter) < DN 150 ±2.0
> DN 150 < DN 500 ±3.0
> DN 500 < DN 1200 ±5.0
> DN 1200 < DN 1800 ±7.0
> DN 1800 ±10.0
C (flange thickness, machined on both faces) < 18 mm thickness ±1.0
> 18 mm < 50 mm thickness ±1.0
> 50 mm thickness ±1.0
C (flange thickness, machined on front face) < 18 mm thickness +2.0, -1.0
> 18 mm < 50 mm thickness +4.0, -1.5
> 50 mm thickness +7.0, -2.0
Weld Neck Flanges, Code 111 B (outside diameter of hub at welding end) < DN 125 +3.0, -0
> DN 125 < DN 1200 +4.5, -0
> DN 1200 +6.0, -0
F (hub diameter) < DN 50 +0, -2.0
> DN 50 < DN 150 +0, -4.0
> DN 150 < DN 300 +0, -6.0
> DN 300 < DN 600 +0, -8.0
> DN 600 < DN 1200 +0, -10.0
D (length through hub) < DN 80 ±1.5
> DN 80 < DN 250 ±2.0
> DN 250 ±3.0
Slip on, Code 112 and Threaded,Code 113 E (slip on flange hub diameter)B (threaded flange hub diameter) < DN 50 +1.0, -0
> DN 50 < DN 150 +2.0, -0
> DN 150 < DN 300 +4.0, -.0
> DN 300 < DN 600 +8.0, -0
> DN 600 < DN 1200 +12.0, -0
> DN 1200 < DN 1800 +16.0, -0
> DN 1800 +20.0, -0
B (slip on bore diameter) < DN 100 +0.5, -0
> DN 100 < DN 400 +1.0, .0
> DN 400 < DN 600 +1.5, .0
> DN 600 +3.0, -0
D (length through hub) Same as Weld Neck D
Blank Flanges, Code 105 B (flange thickness) Same as C for all other flanges
C (unmachined centre portion) Maximum specified
BS 4504 PLATE FLANGE DIMENSIONS AND TECHNICAL DRAWING
BS 4504 PLATE FLANGE
DN PN A mm B mm C mm
10 2.5, 6 75 12 18
10 &16 90 14
25 & 40 90 14
15 2.5 & 6 80 12 22
10 &16 95 14
  25 & 40 95 14
20 2.5 & 6 90 14 27.5
10 &16 105 16
25 & 40 105 16
25 2.5 & 6 100 14 34.5
10 &16 115 16
25 & 40 115 16
32 2.5 & 6 120 16 43.5
10 &16 140 18
25 & 40 140 18
40 2.5 & 6 130 16 49.5
10 &16 150 18
25 & 40 150 18
50 2.5 & 6 140 16 61.5
10 & 16 165 20
25 & 40 165 20
65 2.5 & 6 160 16 77.5
10 & 16 185 20
25 & 40 185 22
80 2.5 & 6 190 18 90.5
10 &16 200 20
25 & 40 200 24
100 2.5 & 6 210 18 116
10 &16 220 22
25 & 40 235 26
125 2.5 & 6 240 20 141.5
10 & 16 250 22
25 & 40 270 28
150 2.5 & 6 265 20 170.5
10 & 16 285 24
25 & 40 300 30
200 2.5 & 6 320 22 221.5
10 &16 340 24
25 360 32
40 375 36
250 2.5 & 6 375 24 276.5
10 395 26
16 405 29
25 425 35
40 450 42
300 2.5 & 6 440 24 327.5
10 445 26
16 460 32
25 485 38
40 515 48
350 2.5 & 6 490 26 359.5
10 505 28
16 520 35 359
25 555 42 359.5
40 580 54
400 2.5 & 6 540 28 411
10 565 32
16 580 38
25 620 46
40 660 60
450 2.5 & 6 595 30 462
10 615 36
16 640 42
25 670 50
40 685 66
500 2.5 & 6 645 30 513.5
10 670 38
16 715 46
25 730 56
40 755 72
600 2.5 & 6 755 32 616.5
10 780 42
16 840 52
25 845 68
40 890 84
700 2.5 860 36 To be specifiedby purchaser
800 2.5 975 38
900 2.5 1075 40
1000 2.5 1175 42
1200 2.5 1375 44
1400 2.5 1575 48
1600 2.5 1790 51
1800 2.5 1990 54
2000 2.5 2190 58

Find the largest ready stock of BS 4504 Flanges, BS 4504 Flange Price List, BS4504 Reducing Flanges Stockist, BS 4504 Slip On Flanges Dealer, Check Availability of BS 4504 Threaded Flanges, BS 4504 PN25 RF Flanges Supplier, BS 4504 Forged Flanges in Mumbai, India.

BS 4504 SLIP ON FLANGE DIMENSIONS AND TECHNICAL DRAWING
BS 4504 SLIP ON FLANGE
DN PN A mm B mm C mm D mm E mm F mm
10 6 75 18 12 20 25 3
10 &16 90 14 20 30
25 & 40 90 16 22 30
15 6 80 22 12 20 30 3
10 &16 95 14 20 35
25 & 40 95 16 22 35
20 6 90 27.5 14 24 40 4
10 &16 105 16 24 45
25 & 40 105 18 26 45
25 6 100 34.5 14 24 50 4
10 &16 115 16 24 52
25 & 40 115 18 28 52
32 6 120 43.5 14 26 60 5
10 &16 140 16 26 60
25 & 40 140 18 30 60
40 6 130 49.5 14 26 70 5
10 &16 150 16 26 70
25 & 40 150 18 32 70
50 6 140 61.5 14 28 80 5
10 & 16 165 18 28 84
25 & 40 165 20 34 84
65 6 160 77.5 14 32 100 6
10 & 16 185 18 32 104
25 & 40 185 22 38 104
80 6 190 90.5 16 34 110 6
10 &16 200 20 34 118
25&40 200 24 40 118
100 6 210 116 16 40 130 6
10 &16 220 20 40 140
25&40 235 24 44 145
125 6 240 141.5 18 44 160 6
10 & 16 250 22 44 168
25 & 40 270 26 48 170
150 6 265 170.5 18 44 185 8
10 & 16 285 22 44 195
25 & 40 300 28 75 190
200 6 320 221.5 20 44 240 8
10 &16 340 24 44 246
25 360 30 52 256
40 375 34 52 260
250 6 375 276.5 22 44 295 10
10 395 26 46 298
16 405 26 46 298
25 425 32 60 310
40 450 38 60 312
300 6 440 327.5 22 44 355 10
10 445 26 46 350
16 460 28 46 350
25 485 34 67 364
40 515 42 67 380
350 10 505 359.5 26 53 400 10
16 520 359 30 57 400
25 555 359.5 38 72 418
40 580 46 72 424
400 10 565 411 26 57 456 10
16 580 32 63 456
25 620 40 78 472
40 660 50 78 478
450 10 615 462 28 63 502 12
16 640 34 68 502
25 670 42 84 520
40 685 50 84 522
500 10 670 513.5 28 67 559 12
16 715 34 73 559
25 730 44 90 580
40 755 52 90 576
600 10 780 616.5 28 75 658 12
16 840 36 83 658
25 845 46 100 684
40 890 60 100 686
BS 4504 BLANK FLANGE DIMENSIONS AND TECHNICAL DRAWING
BS 4504 BLANK FLANGE
DN PN A mm B mm C mm
10 2.5, 6 75 12
10 &16 90 14
25 & 40 90 16
15 2.5 & 6 80 12
10 &16 95 14
25 & 40 95 16
20 2.5 & 6 90 14
10 &16 105 16
25 & 40 105 18
25 2.5 & 6 100 14
10 &16 115 16
25 & 40 115 18
32 2.5 & 6 120 14
10 &16 140 16
25 & 40 140 18
40 2.5 & 6 130 14
10 &16 150 16
25 & 40 150 18
50 2.5 & 6 140 14
10 & 16 165 18
25 & 40 165 20
65 2.5 & 6 160 14 55
10 & 16 185 18 55
25 & 40 185 22 55
80 2.5 & 6 190 16 70
10 &16 200 20 70
25&40 200 24 70
100 2.5 & 6 210 16 90
10 &16 220 20 90
25&40 235 24 90
125 2.5 & 6 240 18 115
10 & 16 250 22 115
25 & 40 270 26 115
150 2.5 & 6 265 18 140
10 & 16 285 22 140
25 & 40 300 28 140
200 2.5 & 6 320 20 190
10 &16 340 24 190
25 360 30 190
40 375 34 190
250 2.5 & 6 375 22 235
10 395 26 235
16 405 26 235
25 425 32 235
40 450 38 235
300 2.5 & 6 440 22 285
10 445 26 285
16 460 28 285
25 485 34 285
40 515 42 285
350 2.5 & 6 490 22 325
10 505 26 325
16 520 30 325
25 555 38 325
40 580 46 325
400 2.5 & 6 540 22 375
10 565 26 375
16 580 32 375
25 620 40 375
40 660 50 375
450 2.5 & 6 595 24 425
10 615 28 425
16 640 34 425
25 670 42 425
40 685 54 425
500 2.5 & 6 645 24 475
10 670 28 475
16 715 36 475
25 730 45 475
40 755 56 475
600 2.5 & 6 755 34 575
10 780 34 575
16 840 44 575
25 845 54 575
40 890 70 575
700 2.5 860 36
6 860 38
10 895 38 670
16 910 48 670
800 2.5 975 38
6 975 42
10 1015 42 770
16 1025 52 770
900 2.5 1075 40
6 1075 46
10 1115 46 860
16 1125 58 860
1000 2.5 1175 42
6 1175 52
10 1230 52 960
16 1255 64 960
1200 2.5 1375 44
6 1405 60
10 1455 60 1160
16 1485 76 1160
1400 2.5 1575 48
6 1630 68
1600 2.5 1790 51
6 1830 76
1800 2.5 1990 54
6 2045 84
2000 2.5 2190 58
6 2265 92
BS 4504 FLANGE FACING DIMENSIONS, TECHNICAL DRAWINGS.
BS 4504 FLANGE FACING
DN A mm Face Dimensions
PN 2.5 PN 6 PN 10 PN 16 PN 25 PN 40 B mm C mm D mm E mm a mm b mm c mm d mm αmm e mm
10 35 35 40 40 40 40 34 35 24 23 2 4 3 2 5
15 40 40 45 45 45 45 39 40 29 28 2 4 3 2 5
20 50 50 58 58 58 58 50 51 36 35 2 4 3 2 41°16′ 5
25 60 60 68 68 68 68 57 58 43 42 2 4 3 2 41°16′ 5
32 70 70 78 78 78 78 65 66 51 50 2 4 3 2 41°16′ 5
40 80 80 88 88 88 88 75 76 61 60 3 4 3 2 41°16′ 5
50 90 90 102 102 102 102 87 88 73 72 3 4 3 2 41°16′ 5
65 110 110 122 122 122 122 109 110 95 94 3 4 3 2 41°16′ 5
80 128 128 138 138 138 138 120 121 106 105 3 4 3 2 41°16′ 5
100 148 148 158 158 162 162 149 150 129 128 3 4.5 3.5 2.5 32°15′ 6
125 178 178 188 188 188 188 175 176 155 154 3 4.5 3.5 2.5 32°15′ 6
150 202 202 212 212 218 218 203 204 183 182 3 4.5 3.5 2.5 32°15′ 6
200 258 258 268 268 278 285 259 260 239 238 3 4.5 3.5 2.5 32°15′ 6
250 312 312 320 320 335 345 312 313 292 291 3 4.5 3.5 2.5 32°15′ 6
300 365 365 370 378 395 410 363 364 343 342 4 4.5 3.5 2.5 32°15′ 6
350 415 415 430 438 450 465 421 422 395 394 4 5 4 3 27°24′ 7
400 465 465 482 490 505 535 473 474 447 446 4 5 4 3 27°24′ 7
450 520 520 532 550 555 560 523 524 497 496 4 5 4 3 27°24′ 7
500 570 570 585 610 615 615 575 576 549 548 4 5 4 3 27°24′ 7
600 670 670 685 725 720 735 675 676 649 648 5 5 4 3 27°24′ 7
700 775 775 800 795 820 777 778 751 750 5 5 4 3 27°24′ 7
800 880 880 905 900 930 882 883 856 855 5 5 4 3 27°24′ 7
900 980 980 1005 1000 1030 987 988 961 960 5 5 4 3 27°24′ 7
1000 1080 1080 1110 1115 1140 1092 1094 1062 1060 5 6 5 4 28°39′ 8
1200 1280 1295 1330 1330 1350 1292 1294 1262 1260 5 6 5 4 28°39′ 8
1400 1480 1510 1535 1530 1560 1492 1494 1462 1460 5 6 5 4 28°39′ 8
1600 1690 1710 1760 1750 1780 1692 1694 1662 1660 5 6 5 4 28°39′ 8
1800 1890 1920 1960 1950 1985 1982 1894 1862 1860 5 6 5 4 28°39′ 8
2000 2090 2125 2170 2150 2210 2092 2094 2062 2060 5 6 5 4 28°39′ 8
BS 4504 WELD NECK FLANGE DIMENSIONS AND TECHNICAL DRAWING
BS 4504 WELD NECK FLANGE
DN PN A mm B mm C mm D mm E mm F mm G mm H mm
10 2.5,6 75 17.2 12 28 6 26 3 1.8
10 90 14 35   28 1.8
16 90 14 35   28 1.8
25 90 16 35   28 1.8
40 90 16 35   28 1.8
15 2.5,6 80 21.3 12 30 6 30 3 2
10 95 14 35 32 2
16 95 14 35 32 2
25 95 16 38 32 2
40 95 16 38 32 2
20 2.5,6 90 26.9 14 32 6 38 4 2.3
10 105 16 38 39 2.3
16 105 16 38 39 2.3
25 105 18 40 40 2.3
40 105 18 40 40 2.3
25 2.5,6 100 33.7 14 35 6 42 4 2.6
10 115 16 38 46 2.6
16 115 16 38 46 2.6
25 115 18 40 46 2.6
40 115 18 40 46 2.6
32 2.5,6 120 42.4 14 35 6 55 5 2.6
10 140 16 40 56 2.6
16 140 16 40 56 2.6
25 140 18 42 56 2.6
40 140 18 42 56 2.6
40 2.5,6 130 48.3 14 38 7 62 5 2.6
10 150 16 42 64 2.6
16 150 16 42 64 2.6
25 150 18 45 64 2.6
40 150 18 45 64 2.6
50 2.5,6 140 60.3 14 38 8 74 5 2.9
10 165 18 45 74 2.9
16 165 18 45 74 2.9
25 165 20 48 74 2.9
40 165 20 48 74 2.9
65 2.5,6 160 76.1 14 38 9 88 6 2.9
10 185 18 45 10 92 2.9
16 185 18 45 92 2.9
25 185 22 52 92 2.9
40 185 22 52 92 2.9
80 2.5,6 190 88.9 16 42 10 102 6 3.2
10 200 20 50 110 3.2
16 200 20 50 12 110 3.2
25 200 24 58 110 3.2
40 200 24 58 110 3.2
100 2.5,6 210 114.3 16 45 10 130 6 3.6
10 220 20 52 12 130 3.6
16 220 20 52 130 3.6
25 235 24 65 134 3.6
40 235 24 65 134 3.6
125 2.5,6 240 139.7 18 48 10 155 6 4
10 250 22 55 12 158 4
16 250 22 55 158 4
25 270 26 68 162 4
40 270 26 68 162 4
150 2.5,6 265 168.3 18 48 12 184 8 4.5
10 285 22 55 184 4.5
16 285 22 55 184 4.5
25 300 28 75 190 4.5
40 300 28 75 190 4.5
200 2.5,6 320 219.1 20 55 15 236 8 5.6
10 340 24 62 16 234 5.6
16 340 24 62 234 5.6
25 360 30 80 244 6.3
40 375 34 88 244 6.3
250 2.5,6 375 273 22 60 15 290 10 6.3
10 395 26 68 16 288 6.3
16 405 26 70 288 6.3
25 425 32 88 18 296 7.1
40 450 38 105 306 7.1
300 2.5,6 440 323.9 22 62 15 342 10 7.1
10 445 26 68 16 342 7.1
16 460 28 78 342 7.1
25 485 34 92 18 350 8
40 515 42 115 362 8
350 2.5,6 490 355.6 22 62 15 385 10 7.1
10 505 26 68 16 390 7.1
16 520 30 82 390 8
25 555 38 100 20 398 8
40 580 46 125 408 8.8
400 2.5,6 540 406.4 22 65 15 438 10 7.1
10 565 26 72 16 440 7.1
16 580 32 85 444 8
25 620 40 110 20 452 8.8
40 660 50 135 462 11
450 2.5,6 595 457 24 65 15 492 12 7.1
  10 615 28 72 16 488 7.1
  16 640 34 87 490 8
  25 670 42 110 20 500 8.8
  40 685 50 135 500 12.5
500 2.5,6 645 508 24 68 15 538 12 7.1
10 670 28 75 16 540 7.1
16 715 34 90 546 8
25 730 44 125 20 558 10
40 755 52 140 562 14.2
600 2.5,6 755 610 24 70 16 640 12 7.1
10 780 28 80 18 640 7.1
16 840 36 95 650 8.8
25 845 46 125 20 660 11
40 890 60 150 666 16
700 2.5 860 711 24 70 16 740 12 -1
6 860 24 70 740 7.1
10 895 30 80 18 746 8
16 910 36 100 750 8.8
25 960 46 125 20 760 12.5
800 2.5 975 813 26 70 16 842 12 -1
6 975 24 70 842 7.1
10 1015 32 90 18 848 8
16 1025 38 105 20 848 10
25 1085 50 135 22 864 14.2
900 2.5 1075 914 26 70 16 942 12 -1
6 1075 26 70 942 7.1
10 1115 34 95 20 948 10
16 1125 40 110 948 10
25 1185 54 145 24 968 16
1000 2.5 1175 1016 26 70 16 1045 12 -1
6 1175 26 70 1045 7.1
10 1230 34 95 20 1050 10
16 1255 42 120 22 1056 10
25 1320 58 155 24 1070 17.5
1200 2.5 1375 1220 26 70 16 1245 16 -1
6 1405 28 90 20 1248 12 8
10 1455 38 115 25 1256 11
16 1485 48 130 30 1260 12.5
1400 2.5 1575 1420 26 70 16 1445 16 -1
6 1630 32 90 20 1452 12 8
10 1675 42 120 25 1460 12
16 1685 52 145 30 1465 14.2
1600 2.5 1790 1620 26 80 20 1645 16 -1
6 1830 34 90 1655 12 9
10 1915 46 130 25 1666 14
16 1930 58 160 35 1668 16
1800 2.5 1990 1820 26 80 20 1845 16 -1
6 2045 36 100 1855 15 10
10 2115 50 140 30 1866 15
16 2130 62 170 35 1870 17.5
2000 2.5 2190 2020 26 80 22 2045 16 -1
6 2265 38 110 25 2058 15 11
10 2325 54 150 30 2070 16
16 2345 66 190 40 2072 20
BS 4504 THREADED FLANGE DIMENSIONS AND TECHNICAL DRAWING
BS 4504 THREADED FLANGE
DN PN A mm B mm C mm D mm E mm
10 6 75 25 12 20 3
16 90 30 14 20
40 90 30 16 22
15 6 80 30 12 20 3
16 95 35 14 20
40 95 35 16 22
20 6 90 40 14 24 4
16 105 45 16 24
40 105 45 18 26
25 6 100 50 14 24 4
16 115 52 16 24
40 115 52 18 28
32 6 120 60 14 26 5
16 140 60 16 26
40 140 60 18 30
40 6 130 70 14 26 5
16 150 70 16 26
40 150 70 18 32
50 6 140 80 14 28 5
16 165 84 18 28
40 165 84 20 34
65 6 160 100 14 32 6
16 185 104 18 32
40 185 104 22 38
80 6 190 110 16 34 6
16 200 118 20 34
40 200 118 24 40
100 6 210 130 16 40 6
16 220 140 20 40
40 235 145 24 44
125 6 240 160 18 44 6
16 250 168 22 44
40 270 170 26 48
150 6 265 185 18 44 8
16 285 195 22 44
40 300 200 28 52
200 6 320 240 20 44 8
16 340 246 24 44
40 375 260 34 52
250 6 375 295 22 44 10
16 405 298 26 46
40 450 312 38 60
300 6 440 355 22 44 10
16 460 350 28 46
40 515 380 42 67
350 16 520 400 30 57 10
40 580 424 46 72
400 16 580 456 32 63 10
40 660 478 50 78
450 16 640 502 34 68 12
40 685 522 50 84
500 16 715 559 34 73 12
40 755 576 52 90
600 16 840 658 36 83 12
40 890 686 60 100
700 16 910 760 36 83 12
800 16 1025 864 38 90 12
900 16 1125 968 40 94 12
1000 16 1255 1072 42 100 12
BS 3293 STANDARD WELDING NECK , SLIP ON FLANGE DIMENSIONS AND TECHNICAL DRAWING
Dimension Tolerance
in mm
Weld Neck and Slip On Flanges (pages 8-56 to8-59) G (raised face diameter) ±1/64 ±0.40
C (flange thickness) +3/16, -0 +4.76, -0
D (overall length) ±1/8 ±3.18
E (outside diameter at welding end of weld neck hub) +5/32, 1/32 +3.97, -0.79
B (inside diameter of weld neck flange) +1/8, 1/16 +3.18, -1.59
B (inside diameter of slip on flange) +1/16, -0 +1.59, -0
Ring Joint Facingon Weld Neck and Slip On Flanges (see below) L (depth of groove) +1/64, -0 +0.40, -0
M (width of groove) ±0.008 ±0.20
K (pitch diameter of groove) ±0.005 ±0.13

BS 4504 Flanges Pressure Ratings

Temperature
BS 4504 FLANGE TABLE -10°C to 200°C 250°C 300°C 350°C 400°C 425°C 450°C 475°C
6 6 5.5 5
10 10 9 8 7 6
16 16 15 13 11 9
25 25 24 21 17 14 12 9 6
40 40 38 33 28 23 20 15 10
64 64 61 53 44 36 32 24 16
100 100 95 83 70 57 50 37 25
160 160 152 132 112 92 80 60 40

BS 4504 Flanges Tolerances

Dimensions Range BS 4504 Tolerance
Millimeter
Flange Facings Eccentricity of machined facing diameters < DN 100 1.0
> DN 100 2.0
a (type B facing height) 2 millimeter +0, -1.0
3 millimeter +0, -2.0
4 millimeter +0, -3.0
5 millimeter +0, -4.0
6 millimeter +0, -5.0
b (type C and E facing height) All +0.5, -0
b (type G facing height) All +0, -0.5
b (type H facing height, outer) All +0.2, -0
c (type D and F facing height) All +0, -0.5
d (type H facing height, inner) All +0.5, -0
B and E (facing diameters) All +0, -0.5
C and D (facing diameters) All +0.5, -0
Surface Finish Facing types A, B, E and F All, turning Ra = 3.2 µm min 12.5 µm max
All, other than turning Ra = 3.2 µm min 6.3 µm max
Facing types C, D, G and H All Ra = 0.8 µm min 3.2 µm max
Flange Drilling Details B (diameter of bolt circle) Bolt sizes M10 to M24 ±0.9
Bolt sizes M27 to M45 ±1.4
Centre to centre of adjacent bolt holes Bolt sizes M10 to M24 ±0.45
Bolt sizes M27 to M45 ±0.7
All A (outside diameter) < DN 150 ±2.0
> DN 150 < DN 500 ±3.0
> DN 500 < DN 1200 ±5.0
> DN 1200 < DN 1800 ±7.0
> DN 1800 ±10.0
C (flange thickness, machined on both faces) < 18 millimeter thickness ±1.0
> 18 millimeter < 50 millimeter thickness ±1.0
> 50 mm thickness ±1.0
C (flange thickness, machined on front face) < 18 mm thickness +2.0, -1.0
> 18 mm < 50 mm thickness +4.0, -1.5
> 50 mm thickness +7.0, -2.0
Weld Neck Flanges, Code 111 B (outside diameter of hub at welding end) < DN 125 +3.0, -0
> DN 125 < DN 1200 +4.5, -0
> DN 1200 +6.0, -0
F (hub diameter) < DN 50 +0, -2.0
> DN 50 < DN 150 +0, -4.0
> DN 150 < DN 300 +0, -6.0
> DN 300 < DN 600 +0, -8.0
> DN 600 < DN 1200 +0, -10.0
D (length through hub) < DN 80 ±1.5
> DN 80 < DN 250 ±2.0
> DN 250 ±3.0
Slip on, Code 112 and Threaded,Code 113 E (slip on flange hub diameter)B (threaded flange hub diameter) < DN 50 +1.0, -0
> DN 50 < DN 150 +2.0, -0
> DN 150 < DN 300 +4.0, -.0
> DN 300 < DN 600 +8.0, -0
> DN 600 < DN 1200 +12.0, -0
> DN 1200 < DN 1800 +16.0, -0
> DN 1800 +20.0, -0
B (slip on bore diameter) < DN 100 +0.5, -0
> DN 100 < DN 400 +1.0, .0
> DN 400 < DN 600 +1.5, .0
> DN 600 +3.0, -0
D (length through hub) Same as Weld Neck D
Blank Flanges, Code 105 B (flange thickness) Same as C for all other flanges
C (unmachined centre portion) Maximum specified

Best quality BS 4504 Flanges, BS 4504  Flanges Price, BS 4504 Nipoflange, View Specification Of BS 4504 Orifice Flange, BS 4504 langes Raised Face, BS 4504 Square Flange, BS 4504 Weldoflange, BS 4504 Groove Flange, BS 4504 RTJ Flange, BS4504 Flanges Facing Type & Finish, BS 4504 Expander Flanges at Best Price.

BS 4504 Flanges Applications

Australia, Afghanistan, Algeria, Angola, Argentina, Armenia, Azerbaijan, Bahrain, Bangladesh, Benin,
Bhutan, Botswana, Brazil, Brunei, Burkina Faso, Cambodia, Cameroon, Canada, Central Africa Republic,
Chad, Chile, Colombia, Cuba, Cyprus, DRC, Djibouti, Egypt, Equatorial Guinea, Eritrea, Eswatini,
Ethiopia, Fiji, Finland, France, Georgia, Germany, Ghana, Greece, Hungary, Iceland, Indonesia, Iran,
Iraq, Ireland, Israel, Italy, Japan, Jordan, Kazakhstan, Kenya, Kuwait, Kyrgyzstan, Laos, Lebanon,
Lesotho, Liberia, Libya, Lithuania, Madagascar, Malawi, Malaysia, Maldives, Mali, Mexico, Morocco,
Mozambique, Mauritania, Myanmar, Namibia, Nepal, Netherlands, New Zealand, Nigeria, Norway, Oman,
Panama, Peru, Philippines, Poland, Portugal, Palestine, Qatar, Russia, Rwanda, Romania, Saudi Arabia,
Senegal, Sierra Leone, Singapore, Slovakia, Somalia, South Africa, South Korea, South Sudan, Spain,
Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Tasmania, Thailand, The Gambia,
Timor-Leste, Togo, Tunisia, Turkey, Turkiye, Turkmenistan, Uganda, Uzbekistan, United Arab Emirates (UAE),
United Kingdom (UK), United States (US), Venezuela, Vietnam, Yemen, Zambia, Zimbabwe

Abu Dhabi, Amsterdam, Abuja, Accra, Addis Ababa, Ahmedabad, Algiers, Amman, Ankara, Antananarivo,
Ashgabat, Asmara, Astana, Athens, Baghdad, Baku, Bamako, Bandar Seri Begawan, Bangkok, Bangui,
Banjul, Beirut, Bengaluru, Berlin, Bishkek, Bloemfontein, Bogotá, Bern, Brasília, Bratislava,
Bucharest, Budapest, Buenos Aires, Cairo, Canberra, Cape Town, Caracas, Chennai, Coimbatore, Dakar,
Damascus, Dhaka, Dili, Djibouti city, Dodoma, Doha, Dublin, Dushanbe, Freetown, Gaborone, Ghaziabad,
Guwahati, Hanoi, Harare, Havana, Helsinki, Hobart, Hyderabad, Indore, Jaipur, Jakarta, Jerusalem,
Juba, Jurong East, Kabul, Kampala, Kanpur, Kathmandu, Kigali, Kinshasa, Kochi, Kolkata, Kuala Lumpur,
Kuwait City, Lisbon, Lilongwe, Lima, Lobamba, Lomé, London, Luanda, Lucknow, Lusaka, Malabo, Madrid,
Malé, Mexico City, Manama, Moscow, Manila, Maputo, Maseru, Mbabane, Mogadishu, Monrovia, Mumabi,
Muscat, Nagpur, Nairobi, New Delhi, Niamey, Nicosia, Noida, Nouakchott, N’Djamena, Oslo, Ottawa,
Ouagadougou, Panama City, Paris, Patna, Phnom Penh, Porto-Novo, Pretoria, Pune, Rabat, Reykjavík,
Riyadh, Rome, Sana’a, Santiago, Sri Jayawardenepura Kotte, Stockholm, Seoul, Singapore, Surat,
Suva, Taipei City, Tashkent, Tokyo, Tbilisi, Tehran, Thimphu, Tripoli, Tunis, Vientiane, Vilnius,
Visakhapatnam, Warsaw, Washington D.C., Wellington, Windhoek, Yaoundé, Yerevan, Naypyidaw

BS 4504 Flanges Price

Omaa Metal Sources is BS 4504 Flanges Exporters and Suppliers in the US, UK, South Africa, Saudi Arabia, Singapore, UAE, Oman, South Korea, Turkey, Bahrain, Malaysia, Philippines, Thailand, Norway, Indonesia, Iraq, Yemen, Bangladesh, Nigeria, Egypt, Peru, Ghana, Morocco, Etc.

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