Bluestar International Bluestar International
Bluestar International
An ISO 9001:2000 Certified Company
An ISO 14001:2004 Certified Company
Manufacturers of flanges from India
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Home - Flanges - Drilling Flanges

Drilling Flanges

Manufactured with finest quality of metals, our wide range of drilling flanges is high in demand across the globe. Our superior quality drilling flanges are independent screwed wellhead which provides metal-to-metal seal. These flanges drilling are extensively used in various industries like ship building, petrochemical, steel plant etc. We are known for offering our product range at reasonable prices and delivering consignment within given time frame.


Threaded Flanges - BS 4504

Threaded Flanges - BS 4504Bluestar International, Threaded Flanges - BS 4504
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DN PN A B C Bolt Holes
mm mm mm No. Bolt Size
10 2.5 & 6 75 50 11 4 M 10
10, 16 90 60 14 4 M 12
15 2.5 & 6 80 55 11 4 M 10
10 & 16 95 65 14 4 M 12
25 & 40 95 65 14 4 M 12
20 2.5 & 6 90 65 11 4 M 10
10 & 16 105 75 14 4 M 12
25 & 40 105 75 14 4 M 12
25 2.5 & 6 100 75 11 4 M 10
10 & 16 115 85 14 4 M 12
25 & 40 115 85 14 4 M 12
32 2.5 & 6 120 90 14 4 M 12
10 & 16 140 100 18 4 M 16
25 & 40 140 100 18 4 M 16
40 2.5 & 6 130 100 14 4 M 12
10 & 16 150 110 18 4 M 16
25 & 40 150 110 18 4 M 16
50 2.5 & 6 140 110 14 4 M 12
10 & 16 165 125 18 4 M 16
25 & 40 165 125 18 4 M 16
65 2.5 & 6 160 130 14 4 M 12
10 & 16 185 145 18 4/8 M 16
25 & 40 185 145 18 8 M 16
80 2.5 & 6 190 150 18 4 M 16
10 & 16 200 160 18 8 M 16
25 & 40 200 160 18 8 M 16
100 2.5 & 6 210 170 18 4 M 16
10 & 16 220 180 18 8 M 16
25 & 40 235 190 22 8 M 20
125 2.5 & 6 240 200 18 8 M 16
10 & 16 250 210 18 8 M 16
25 & 40 270 220 26 8 M 24
150 2.5 & 6 265 225 18 8 M 16
10 & 16 235 240 22 8 M 20
25 & 40 300 250 26 8 M 24
200 2.5 & 6 320 280 18 8 M 16
10 & 16 340 295 22 8/12 M 20
25 360 310 26 12 M 24
40 375 320 30 12 M 27
250 2.5 & 6 375 335 18 12 M 16
10 395 350 22 12 M 20
16 405 355 26 12 M 24
25 425 370 30 12 M 27
40 450 385 33 12 M 30
300 2.5 & 6 440 395 22 12 M 20
10 445 400 22 12 M 20
16 460 410 26 12 M 24
25 485 430 30 16 M 27
40 515 450 33 16 M 30
350 2.5 & 6 490 445 22 12 M 20
10 505 460 22 16 M 20
16 520 470 26 16 M 24
25 555 490 33 16 M 30
40 580 510 36 16 M 33
400 2.5 & 6 540 495 22 16 M 20
10 565 515 26 16 M 24
16 580 525 30 16 M 27
25 620 550 36 16 M 33
40 660 585 39 16 M 36
450 2.5 & 6 595 550 22 16 M 20
10 615 565 26 20 M 24
16 640 585 30 20 M 27
25 670 600 36 20 M 33
40 685 610 39 20 M 36
500 2.5 & 6 645 610 22 20 M 20
10 670 620 26 20 M 24
16 715 650 33 20 M 30
25 730 660 36 20 M 33
40 755 670 42 20 M 39
600 2.5 & 6 755 705 26 20 M 24
10 780 725 30 20 M 27
16 840 770 36 20 M 33
25 845 770 39 20 M 36
40 890 795 48 20 M 45
700 2.5 & 6 860 810 26 24 M 24
10 895 840 30 24 M 27
16 910 840 36 24 M 33
25 960 875 42 24 M 39
800 2.5 & 6 975 920 30 24 M 27
10 1015 950 33 24 M 30
16 1025 950 39 24 M 36
25 1085 990 48 24 M 45
900 2.5 & 6 1075 1020 30 24 M 27
10 1115 1050 33 28 M 30
16 1125 1050 39 28 M 36
25 1185 1090 48 28 M 45
1000 2.5 & 6 1175 1120 30 28 M 27
10 1230 1160 36 28 M 33
16 1255 1170 42 28 M 39
25 1320 1210 56 28 M 52
1200 2.5 1375 1320 30 32 M 27
6 1405 1340 33 32 M 30
10 1455 1380 39 32 M 36
16 1485 1390 48 32 M 45
25 1530 1420 56 32 M 52
1400 2.5 1575 1520 30 36 M 27
6 1630 1560 36 36 M 33
10 1675 1590 42 36 M 39
16 1685 1590 48 36 M 45
25 1755 1640 62 36 M 56
1600 2.5 1790 1730 30 40 M 27
6 1830 1760 36 40 M 33
10 1915 1820 48 40 M 45
16 1930 1820 56 40 M 52
25 1975 1860 62 40 M 56
1800 2.5 1990 1930 30 44 M 27
6 2045 1970 39 44 M 36
10 2115 2020 48 44 M 45
16 2130 2020 56 44 M 52
25 2185 2070 70 44 M 64
2000 2.5 2190 2130 30 48 M 27
6 2265 2180 42 48 M 39
10 2325 2230 48 48 M 45
16 2345 2230 62 48 M 56
25 2425 2300 70 48 M 64


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Plate Flanges (Code 101) – BS 4504

Plate Flanges (Code 101) – BS 4504Bluestar International, Plate Flanges (Code 101) – BS 4504
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DN PN A B C
mm mm mm
10 2.5 & 6 75 12
10 & 16 90 14 18.0
25 & 40 90 14
15 2.5 & 6 80 12
10 & 16 95 14 22
25 & 40 95 14
20 2.5 & 6 90 14
10 & 16 105 16 27.5
25 & 40 105 16
25 2.5 & 6 100 14
10 & 16 115 16 34.5
25 & 40 115 16
32 2.5 & 6 120 16
10 & 16 140 18 43.5
25 & 40 140 18
40 2.5 & 6 130 16
10 & 16 150 18 49.5
25 & 40 150 18
50 2.5 & 6 140 16
10 & 16 165 20 61.5
25 & 40 165 20
65 2.5 & 6 160 16
10 & 16 185 20 77.5
25 & 40 185 22
80 2.5 & 6 190 18
10 & 16 200 20 90.5
25 & 40 200 24
100 2.5 & 6 210 18
10 & 16 220 22 116.0
25 & 40 235 26
125 2.5 & 6 240 20
10 & 16 250 22 141.5
25 & 40 270 28
150 2.5 & 6 265 20
10 & 16 285 24 170.5
25 & 40 300 30
200 2.5 & 6 320 22
10 & 16 340 24
25 360 32 221.5
40 375 36
250 2.5 & 6 375 24
10 395 26
16 405 29 276.5
25 425 35
40 450 42
300 2.5 & 6 440 24
10 445 26
16 460 32 327.5
25 485 38
40 515 48
350 2.5 & 6 490 26
10 505 28 359.5
16 520 35 359.0
25 555 42 359.5
40 580 54
400 2.5 & 6 540 28
10 565 32
16 580 38 411.0
25 620 46
40 660 60
450 2.5 & 6 595 30
10 615 36
16 640 42 462.0
25 670 50
40 685 66
500 2.5 & 6 645 30
10 670 38
16 715 46 513.5
25 730 56
40 755 72
600 2.5 & 6 755 32
10 780 42
16 840 52 616.5
25 845 68
40 890 84
700 2.5 860 36
800 2.5 975 38
900 2.5 1075 40
1000 2.5 1175 42 To be Specified By Purchaser
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

Notes
  • Dimension B is the range thickness with or without a raised face.


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Blank Flanges (Code 105) – BS 4504

Blank Flanges (Code 105) – BS 4504Bluestar International, Blank Flanges (Code 105) – BS 4504
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DN PN A B C
mm mm 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 -

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Notes
  • Dimension B is the range thickness with or without a raised face.
  • Dimension C is the maximum diameter of the centre portion of a blank flange face which need not be machined.



Flanges
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