Bluestar International Bluestar International
Bluestar International
An ISO 9001:2008 Certified Company
An ISO 14001:2004 Certified Company
Manufacturers of flanges from India
Bluestar International
Bluestar International
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Threaded Steel Flanges

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

We specialize in manufacturing high quality and wide variety of threaded steel flanges. These are highly appreciated for its dimensionally accurate and corrosion resistant features. All our products require less maintenance and are ideal for high temperature & pressure applications. These steel threaded flanges can be place with the pipe without welding and give flawless performance. Available at the most competitive prices, these stainless steel threaded flanges can be customized as per the client's requirement.

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Specification :

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 600 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 22.40 15.70 38.10 35.00 4 15.70 66.55
¾ 26.70 117.3 29.00 15.70 25.40 15.70 47.80 42.90 4 19.10 82.60
1 33.40 124.0 35.80 17.50 28.40 17.50 53.80 50.80 4 19.10 88.90
1 ¼ 42.20 133.4 44.40 20.60 28.40 20.60 63.50 63.50 4 19.10 98.60
1 ½ 48.30 155.4 50.50 22.40 31.75 22.40 69.85 73.15 4 22.40 114.3
2 60.30 165.1 63.50 25.40 36.60 28.40 84.10 91.90 8 19.10 127.0
2 ½ 73.00 190.5 76.20 28.40 41.10 31.75 100.1 104.6 8 22.40 149.4
3 88.90 209.6 92.20 31.75 46.00 35.10 117.3 127.0 8 22.40 168.1
3 ½ 101.6 228.6 104.9 35.10 49.30 39.60 133.4 139.7 8 25.40 184.2
4 114.3 273.1 117.6 38.10 53.80 41.10 152.4 157.2 8 25.40 215.9
5 141.3 330.2 144.5 44.50 60.45 47.80 189.0 185.7 8 28.40 266.7
6 168.3 355.6 171.4 47.80 66.55 50.80 222.3 215.9 12 28.40 292.1
8 219.1 419.1 222.3 55.60 76.20 57.15 273.1 269.7 12 31.75 349.3
10 273.0 508.0 276.3 63.50 85.90 65.00 342.9 323.8 16 35.10 431.8
12 323.8 558.8 328.7 66.55 91.90 69.85 400.1 381.0 20 35.10 489.0
14 355.6 603.3 360.4 69.85 93.70 73.15 431.8 412.7 20 38.10 527.1
16 406.4 685.8 411.2 76.20 106.4 77.70 495.3 469.9 20 41.10 603.3
18 457.2 743.0 462.0 82.60 117.3 79.25 546.1 533.4 20 44.50 654.1
20 508.0 812.8 512.8 88.90 127.0 82.60 609.6 584.2 24 44.50 723.9
24 609.6 939.8 614.4 101.6 139.7 91.90 717.6 692.1 24 50.80 838.2

Notes
  • The ANSI B 600 Class threaded flanges conforms to ASME B1. 20.1 NTP threads. (The only exceptions are small male and female plain face threaded flanges which uses NPSL locknut threads)
  • Weights are based on manufacturer's data and are approximate
  • Class 300 and higher threaded flanges are counter-bored. Threads are chamfered to the counterbore at an angle of 450 (approx)


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ANSI B 900 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 21.30 120.6 23.60 22.30 31.70 22.30 38.10 35.10 4 22.30 82.50
¾ 26.70 130.0 29.00 25.40 35.00 25.40 44.00 42.90 4 22.30 88.90
1 33.40 149.3 35.80 28.40 41.10 28.40 52.30 50.80 4 25.40 101.6
1 ¼ 42.20 158.7 44.40 28.40 41.10 30.20 63.50 63.50 4 25.40 111.2
1 ½ 48.30 177.8 50.50 31.70 44.50 31.70 69.85 73.15 4 28.40 123.9
2 60.30 215.9 63.50 38.10 57.15 38.10 104.6 91.90 8 25.40 165.1
2 ½ 73.00 244.3 76.20 41.10 63.50 47.70 123.9 104.6 8 28.40 190.5
3 88.90 241.3 92.20 38.10 53.80 41.10 127.0 127.0 8 25.40 190.5
4 114.3 292.1 117.6 44.40 69.85 47.80 158.7 157.2 8 31.70 234.9
5 141.3 349.2 144.5 50.80 79.25 53.80 190.5 185.7 8 35.00 279.4
6 168.3 381.0 171.4 55.60 85.80 57.15 234.9 215.9 12 31.70 317.5
8 219.1 469.9 222.2 63.50 101.6 63.50 298.4 269.7 12 38.10 393.7
10 273.0 546.1 276.3 69.85 107.9 71.40 368.3 323.8 16 38.10 469.9
12 323.8 609.6 328.7 79.25 117.3 76.20 419.1 381.0 20 38.10 533.4
14 355.6 641.3 360.4 85.80 130.0 82.50 450.8 412.7 20 41.10 558.8
16 406.4 704.8 411.2 88.90 133.3 85.90 508.0 469.9 20 44.40 615.9
18 457.2 787.4 462.0 101.6 152.4 88.90 565.1 533.4 20 50.80 685.8
20 508.0 857.2 512.8 107.9 158.7 91.90 622.3 584.2 20 53.80 749.3
24 609.6 1041.4 614.4 139.7 203.2 101.6 749.3 692.1 20 66.55 901.7

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Notes
  • The thread conforms to ASME B1. 20.1 NTP threads as described in Section 10. (The only exceptions are small male and female plain face threaded flanges which use NPSL locknut threads)
  • Weights are based on manufacturer's data and are approximate
  • Class 300 and higher threaded flanges are counter-bored. Threads are chamfered to the counterbore at an angle of 450 (approx)



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