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

Threaded Flanges


ANSI B 150 Class ANSI B 300 Class ANSI B 600 Class
ANSI B 900 Class ANSI B 1500 Class ANSI B 2500 Class


Our range of threaded flanges and NPT flanges are manufactured as per international quality standards and is available in various dimensions. Our threaded flanges are used with their main advantage being that they can be used for extraordinary circumstances and in highly volatile areas where welding is hazardous. Our NPT threaded flanges can attached to the pipe without welding. These are low maintenance threaded flanges made from high quality raw material, that are available at fair prices. We ensure timely delivery of the products within stipulated time frame.

Stainless Steel : ASTM A 182, A 240

Grade : F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L, Duplex stainless steel UNS S31803, 2205, Super Duplex stainless steel UNS S32750

Carbon Steel : ASTM A 105, ASTM A 181

Alloy Steel : ASTM A 182, GR F1, F11, F22, F5, F9, F91

Nickel Alloys : Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276


ANSI B 150 Class

ANSI B 16.5Bluestar InternationalANSI B 16.5

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Pipe Flange Dimension Hub Dimension RF Drilling Dimension
Size A C D E F G H I J
Outer Diameter
mm
Overall Dia
mm
Plate Thickness min
mm
Total Height
mm
Threaded Length min
mm
Hub Dia
mm
Face Dia
mm
Number of Holes Bolt Hole Dia
mm
PCD mm
½ 21.30 88.90 11.20 15.70 15.70 30.20 35.00 4 15.70 60.45
¾ 26.70 98.60 12.70 15.70 15.70 38.10 42.90 4 15.70 69.85
1 33.40 108.0 14.20 17.50 17.50 49.30 50.80 4 15.70 79.25
1 ¼ 42.20 117.3 15.70 20.60 20.60 58.70 63.50 4 15.70 88.90
1 ½ 48.30 127.0 17.50 22.40 22.40 65.00 73.15 4 15.70 98.60
2 60.30 152.4 19.10 25.40 25.40 77.70 91.90 4 19.10 120.7
2 ½ 73.00 177.8 22.40 28.40 28.40 90.40 104.6 4 19.10 139.7
3 88.90 190.5 23.90 30.20 30.20 108.0 127.0 4 19.10 152.4
3 ½ 101.6 215.9 23.90 31.75 31.75 122.2 139.7 8 19.10 177.8
4 114.3 228.6 23.90 33.30 33.30 134.9 157.2 8 19.10 190.5
5 141.3 254.0 23.90 36.60 36.60 163.6 185.7 8 22.40 215.9
6 168.3 279.4 25.40 39.60 39.60 192.0 215.9 8 22.40 241.3
8 219.1 342.9 28.40 44.50 44.50 246.1 269.7 8 22.40 298.5
10 273.0 406.4 30.20 49.30 49.30 304.8 323.8 12 25.40 362.0
12 12.75 19.00 1.250 2.190 2.190 14.38 15.00 12 1.000 17.00
14 355.6 533.4 35.10 57.15 57.15 400.1 412.7 12 28.40 476.3
16 406.4 596.9 36.60 63.50 63.50 475.2 469.9 16 28.40 539.8
18 457.2 635.0 39.60 68.30 68.30 505.0 533.4 16 31.75 577.9
20 508.0 698.5 42.90 73.15 73.15 558.8 584.2 20 31.75 635.0
24 609.6 812.8 47.80 82.60 82.60 663.4 692.1 20 35.10 749.3

Notes
  • The threaded flanges conforms to ASME B1. 20.1 NTP threads. (The only exceptions are small male and female plain face threaded flanges which use NPSL locknut threads)
  • Class 300 and higher threaded flanges are counter-bored. Threads are chamfered to the counterbore at an angle of 450 (approx)
  • Weights are based on manufacturer's data and are approximate


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ANSI B 300 Class

ANSI B 16.5Bluestar InternationalANSI B 16.5

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Pipe Flange Dimension Hub Dimension RF Drilling Dimension
Size A B C D E F G H I J
Outer Diameter
mm
Overall Dia
mm
Counter Bore
mm
Plate Thickness min
mm
Total Height
mm
Threaded Length min
mm
Hub Dia
mm
Face Dia
mm
Number of Holes Bolt Hole Dia
mm
PCD mm
½ 21.30 95.30 23.60 14.20 22.30 15.70 38.10 35.00 4 15.70 66.55
¾ 26.70 117.3 29.00 15.70 25.40 15.70 42.70 42.90 4 19.00 82.50
1 33.40 124.0 35.80 17.50 26.90 17.50 53.80 50.80 4 19.00 88.90
1 ¼ 42.20 133.4 44.40 19.00 26.90 20.60 63.50 63.50 4 19.00 98.50
1 ½ 48.30 155.4 50.50 20.60 30.20 22.30 69.85 73.15 4 22.30 114.3
2 60.30 165.1 63.50 22.30 33.20 28.40 84.00 91.90 8 19.00 127.0
2 ½ 73.00 190.5 76.20 25.40 38.10 31.70 100.0 104.6 8 22.30 149.3
3 88.90 209.6 92.20 28.40 42.90 31.70 117.3 127.0 8 22.30 168.1
3 ½ 101.6 228.6 104.9 30.20 44.40 36.50 133.3 139.7 8 22.30 184.1
4 114.3 254.0 117.6 31.70 47.70 36.50 146.0 157.2 8 22.30 200.1
5 141.3 279.4 144.5 35.00 50.80 42.90 177.8 185.7 8 22.30 234.9
6 168.3 317.5 171.4 36.50 52.30 45.90 206.2 215.9 12 22.30 269.7
8 219.1 381.0 222.3 41.10 61.90 50.80 260.3 269.7 12 25.40 330.2
10 273.0 444.5 276.3 47.70 66.55 55.60 320.5 323.8 16 28.40 387.3
12 323.8 520.7 328.7 50.80 73.15 60.45 374.6 381.0 16 31.70 450.8
14 355.6 584.2 360.4 53.80 76.20 63.50 425.4 412.7 20 31.70 514.3
16 406.4 647.7 411.2 57.15 82.50 68.30 482.6 469.9 20 35.00 571.5
18 457.2 711.2 462.0 60.45 88.90 69.85 533.4 533.4 24 35.00 628.6
20 508.0 774.7 512.8 63.50 95.2 73.15 587.2 584.2 24 35.00 685.8
24 609.6 914.4 614.4 69.85 106.4 82.50 701.5 692.1 24 41.10 812.8

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Notes
  • The ANSI B 300 Class threaded flanges conforms to ASME B1. 20.1 NTP threads. (The only exceptions are small male and female plain face threaded flanges which use NPSL locknut threads).
  • Class 300 and higher threaded flanges are counter-bored. Threads are chamfered to the counterbore at an angle of 450 (approx)
  • ANSI B 300 Class flanges weights are based on manufacturer's data and are approximate



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