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Bluestar International
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Home - Flanges - WNRF Flanges

WNRF Flanges ( Welding Neck 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

Offering our clients a wide and unmatched range of weld neck flanges. Our welding neck flanges are resistant to corrosion and abrasion. Our products range find wide application in national and international industries of diverse sectors. Made from superior grade raw material, these weld neck flanges ensure durable performance at client's end and are available at most competitive prices. We can customize our range of welding neck flanges as per the requirement of the bulk buyers.

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Specifications :

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 16.5ANSI B 16.5ANSI B 16.5

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Pipe Flange Dimension Neck Dimension RF Drilling Dimension
Size A B C D E F G H I J
Outer Diametermeter mm Overall Diameter mm Inner Diameter mm Plate Thickness min mm Total Height mm Neck Dia mm Hub Diameter mm Face Diameter mm Number of Holes Bolt Hole Diameter mm PCD mm
½ 21.30 88.90 15.70 11.20 47.80 21.30 30.20 35.00 4 15.70 60.45
¾ 26.70 98.60 20.80 12.70 52.30 26.70 38.10 42.90 4 15.70 69.85
1 33.40 108.0 26.70 14.20 55.60 33.50 49.30 50.80 4 15.70 79.25
1 ¼ 42.20 117.3 35.10 15.70 57.15 42.20 58.70 63.50 4 15.70 88.90
1 ½ 48.30 127.0 40.90 17.50 62.00 48.30 65.00 73.15 4 15.70 98.60
2 60.30 152.4 52.60 19.10 63.50 60.45 77.70 91.90 4 19.10 120.7
2 ½ 73.00 177.8 62.70 22.40 69.85 73.15 90.40 104.6 4 19.10 139.7
3 88.90 190.5 78.00 23.90 69.85 88.90 108.0 127.0 4 19.10 152.4
3 ½ 101.6 215.9 90.20 23.90 71.40 101.6 122.2 139.7 8 19.10 177.8
4 114.3 228.6 102.4 23.90 76.20 114.3 134.9 157.2 8 19.10 190.5
5 141.3 254.0 128.3 23.90 88.90 141.2 163.6 185.7 8 22.40 215.9
6 168.3 279.4 154.2 25.40 88.90 168.4 192.0 215.9 8 22.40 241.3
8 219.1 342.9 202.7 28.40 101.6 219.2 246.1 269.7 8 22.40 298.5
10 273.0 406.4 254.5 30.20 101.6 273.0 304.8 323.8 12 25.40 362.0
12 323.8 482.6 304.8 31.75 114.3 323.8 365.3 381.0 12 25.40 431.8
14 355.6 533.4 35.10 127.0 355.6 400.1 412.7 12 28.40 476.3
16 406.4 596.9 36.60 127.0 406.4 475.2 469.9 16 28.40 539.8
18 457.2 635.0 39.60 139.7 457.2 505.0 533.4 16 31.75 577.9
20 508.0 698.5 42.90 144.5 508.0 558.8 584.2 20 31.75 635.0
24 609.6 812.8 47.80 152.4 609.6 663.4 692.1 20 35.10 749.3

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Notes
  • Flanges dimensions B corresponds to the pipe inside diameter. Values quoted assume 40S/Standard wall thickness
  • ANSI B 150 Class flanges weights are based on manufacturer's data and are approximate.


ANSI B 300 Class

ANSI B 16.5ANSI B 16.5ANSI B 16.5

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Pipe Flange Dimension Neck Dimension RF Drilling Dimension
Size A B C D E F G H I J
Outer Diametermeter mm Overall Diameter mm Inner Diameter mm Plate Thickness min mm Total Height mm Neck Dia mm Hub Diameter mm Face Diameter mm Number of Holes Bolt Hole Diameter mm PCD mm
½ 21.30 95.30 15.70 14.20 52.30 21.30 38.10 35.00 4 15.70 66.55
¾ 26.70 117.3 20.80 15.70 57.15 26.70 42.70 42.90 4 19.00 82.50
1 33.40 124.0 26.70 17.50 62.00 33.50 53.80 50.80 4 19.00 88.90
1 ¼ 42.20 133.4 35.10 19.00 65.00 42.20 63.50 63.50 4 19.00 98.50
1 ½ 48.30 155.4 40.90 20.60 68.30 48.30 69.85 73.15 4 22.30 114.3
2 60.30 165.1 52.60 22.30 69.85 60.45 84.00 91.90 8 19.00 127.0
2 ½ 73.00 190.5 62.70 25.40 76.20 73.15 100.0 104.6 8 22.30 149.3
3 88.90 209.6 78.00 28.40 79.25 88.90 117.3 127.0 8 22.30 168.1
3 ½ 101.6 228.6 90.20 30.20 81.00 101.6 133.3 139.7 8 22.30 184.1
4 114.3 254.0 102.4 31.70 85.80 114.3 146.0 157.2 8 22.30 200.1
5 141.3 279.4 128.3 35.00 98.50 141.2 177.8 185.7 8 22.30 234.9
6 168.3 317.5 154.2 36.50 98.50 168.4 206.2 215.9 12 22.30 269.7
8 219.1 381.0 202.7 41.10 111.2 219.2 260.3 269.7 12 25.40 330.2
10 273.0 444.5 254.5 47.70 117.3 273.0 320.5 323.8 16 28.40 387.3
12 323.8 520.7 304.8 50.80 130.0 323.8 374.6 381.0 16 31.70 450.8
14 355.6 584.2 53.80 142.7 355.6 425.4 412.7 20 31.70 514.3
16 406.4 647.7 57.15 146.0 406.4 482.6 469.9 20 35.00 571.5
18 457.2 711.2 60.45 158.7 457.2 533.4 533.4 24 35.00 628.6
20 508.0 774.7 63.50 162.0 508.0 587.2 584.2 24 35.00 685.8
24 609.6 914.4 69.85 168.1 609.6 701.5 692.1 24 41.10 812.8

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Notes
  • ANSI B 300 Class flanges dimensions B corresponds to the pipe inside diameter. Values quoted assume 40S/Standard wall thickness
  • ANSI B 300 Class flanges weights are based on manufacturer's data and are approximate.



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