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ASME B16.47 Class 900 Series B Flange (Weld Neck and Blind Flange)

2024-12-12 16:26:37 Hits:95 American Standards / Product Standards

The ASME B16.47 Class 900 Series B Flange is engineered to provide exceptional performance in high-pressure large-diameter piping systems. This flange category includes weld neck flanges (WN) and blind flanges (BL), which are designed to meet the stringent demands of industrial applications such as oil and gas, petrochemical, and power generation.

Key Features

Standard Compliance: Manufactured in accordance with ASME B16.47 standards, ensuring precise dimensions and compatibility with various pipeline systems.

Pressure Class: Rated for Class 900, making it suitable for high-pressure environments.

Types Available:

  • Weld Neck Flanges (WN): Ideal for welding to pipes, offering a secure and leak-proof connection.
  • Blind Flanges (BL): Used to seal off piping systems or pressure vessels, ensuring safety and efficiency.

Material Options: Typically available in carbon steel, stainless steel, and alloy steel, with material grades customized to suit specific application requirements.

Sealing Faces: Options include Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ) to ensure compatibility with different sealing methods.

Dimensions of ASME B16.47 Class 900 Series B Flange:

Dimension of ASME B16.47 Class 900 Series B Flange

Dimension of ASME B16.47 Class 900 Series B Flange

Nominal Pipe Size O.D. of flange Minimum Thickness of Flange,tf[Note(1)] Length Through Hub Diam. of Hub Hub Diam. Top Raised Face Diam. Drilling Diam. of Bolt,in. Minimum Fillet Radius
O WNF Blind Y X[Note(2)] A R Diam. of Bolt Circle No. of Bolt Holes Diam. of Bolt Hole,in. r1
26 1020 135.0 154.0 259 743 660.4 762 901.7 20 2 ⅝ 2 ½ 11
28 1105 147.7 166.7 276 797 711.2 819 971.6 20 2 ⅞ 2 ¾ 13
30 1180 155.6 176.1 289 851 762.0 876 1035.0 20 3 ⅛ 3 13
32 1240 160.4 186.0 303 908 812.8 927 1092.2 20 3 ⅛ 3 13
34 1315 171.5 195.0 319 962 863.6 991 1155.7 20 3 ⅜ 3 ¼ 14
36 1345 173.1 201.7 325 1016 914.4 1029 1200.2 24 3 ⅛ 3 14
38 1460 190.5 215.9 352 1073 965.2 1099 1289.0 20 3 ⅝ 3 ½ 19
40 1510 196.9 223.9 364 1127 1016.0 1162 1339.8 24 3 ⅝ 3 ½ 21
42 1560 206.4 231.8 371 1176 1066.8 1213 1390.6 24 3 ⅝ 3 ½ 21
44 1650 214.4 242.9 391 1235 1117.6 1270 1463.7 24 3 ⅞ 3 ¾ 22
46 1735 225.5 255.5 411 1292 1168.4 1334 1536.7 24 4 ⅛ 4 22
48 1785 233.4 233.4 419 1343 1219.2 1384 1587.5 24 4 ⅛ 4 24

GENERAL NOTES:
(a)Dimensions are in millimeters.
(b)Blind flanges may be made with or without hubs at the manufacturer’s option.
(c)Dimensions for Classes 400,600,and 900 NPS 38 and larger for Series B flanges are the same as for the Series A flanges.
NOTES:
(1)The minimum flange thickness does not include the raised face thickness.
(2)This dimension is for the large end of hub,which may be straight or tapered.

Haihao Group can provide a variety ASME B16.47 standard flange,as follows:

Applications

  • High-pressure pipelines in oil and gas industries.
  • Petrochemical plants.
  • Power generation systems.
  • Heavy-duty industrial systems requiring robust flange connections.

Quality and Testing

Each ASME B16.47 Class 900 Series B Flange undergoes rigorous quality checks, including:

  • Dimensional inspection.
  • Pressure testing.
  • Non-destructive testing (NDT).
  • Material certification in compliance with EN 10204 3.1 or 3.2.

For further inquiries or to request a quote, please contact us to learn more about our ASME B16.47 class 900 Series B flange offerings. We are committed to delivering high-quality products tailored to your specific needs. Email:sales@haihaogroup.com

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