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ASME B16.47 Class 900 Series A Flange (Weld Neck and Blind Flange)
Haihao Group offers a premium range of ASME B16.47 Class 900 Series A flanges, engineered to meet the rigorous demands of high-pressure applications. These flanges are available in various materials and configurations, designed to deliver durability and optimal performance in industrial piping systems.Among our premium products are the ASME B16.47 Class 600 Series A flanges, available in weld neck and blind flange types.
Key Specifications
Standard: ASME B16.47
Pressure Class: 900#
Series A:
Provides larger bolt holes and thicker flange design for enhanced strength.
Designed for heavy-duty and high-pressure applications.
Flange Types:
Weld Neck Flanges: For superior stress distribution and secure connection.
Blind Flanges: Ideal for sealing the ends of pipelines or isolating system sections.
Sealing Surface Options:
- Raised Face (RF)
- Flat Face (FF)
- Ring Type Joint (RTJ)
Materials Available
- Carbon Steel: ASTM A105, A350 LF2
- Alloy Steel: ASTM A182 F11, F22
- Stainless Steel: ASTM A182 F304, F316
- Nickel Alloys and Special Materials: Upon request
Dimension of ASME B16.47 Class 900 Series A Flange:
Dimensions of Class 900 Series A Flanges
| 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 | 1085 | 139.7 | 160.4 | 286 | 775 | 660.4 | 749 | 952.5 | 20 | 2 ⅞ | 2 ¾ | 11 |
| 28 | 1170 | 142.9 | 171.5 | 298 | 832 | 711.2 | 800 | 1022.4 | 20 | 3 ⅛ | 3 | 13 |
| 30 | 1230 | 149.3 | 182.6 | 311 | 889 | 762.0 | 857 | 1085.8 | 20 | 3 ⅛ | 3 | 13 |
| 32 | 1315 | 158.8 | 193.7 | 330 | 946 | 812.8 | 914 | 1155.7 | 20 | 3 ⅜ | 3 ¼ | 13 |
| 34 | 1395 | 165.1 | 204.8 | 349 | 1006 | 863.6 | 965 | 1225.6 | 20 | 3 ⅝ | 3 ½ | 14 |
| 36 | 1460 | 171.5 | 214.4 | 362 | 1064 | 914.4 | 1022 | 1289.0 | 20 | 3 ⅝ | 3 ½ | 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.
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:
- ASME B16.47 Class 150 Series A Flange
- ASME B16.47 Class 300 Series A Flange
- ASME B16.47 Class 400 Series A Flange
- ASME B16.47 Class 600 Series A Flange
- ASME B16.47 Class 900 Series A Flange
- ASME B16.47 Class 75 Series B Flange
- ASME B16.47 Class 150 Series B Flange
- ASME B16.47 Class 300 Series B Flange
- ASME B16.47 Class 400 Series B Flange
- ASME B16.47 Class 600 Series B Flange
- ASME B16.47 Class 900 Series B Flange
Features and Benefits
High Pressure Tolerance: Specifically designed for systems operating under Class 900 pressure.
Robust Design: Larger dimensions and enhanced strength for reliable performance in critical applications.
Precision Engineering: Manufactured to ensure dimensional accuracy and compatibility with standard piping systems.
Versatile Applications: Suitable for both onshore and offshore environments, including extreme temperature conditions.
Applications
ASME B16.47 Class 900 Series A flanges are widely used in:
- Oil & Gas Refineries
- Petrochemical and Chemical Plants
- Power Generation
- Marine and Offshore Systems
- High-Pressure Transmission Lines
Quality Assurance
At Haihao Group, quality is our priority. Each flange undergoes:
Material Inspection: Compliance with ASTM and ASME specifications.
Dimensional Testing: Ensures precise conformity to ASME B16.47 standards.
Non-Destructive Testing (NDT): Ultrasonic and magnetic particle tests for flaw detection.
Pressure Testing: Confirms performance under specified operational conditions.
Packaging and Surface Treatment
Packaging: Flanges are securely packed in wooden crates or pallets to prevent transit damage.
Surface Protection: Options include anti-rust oil, black paint, or galvanization for corrosion resistance.
Clear Markings: Size, pressure rating, material grade, and heat numbers are stamped for traceability.
Why Choose Haihao Group?
Expertise: Over 40 years of experience in the piping industry.
Global Standards: Products adhere to international specifications, including ASME, ASTM, and ISO.
Customer-Centric Solutions: Customization available to meet specific project requirements.
Global Delivery: Reliable logistics to ensure timely delivery worldwide.
Contact Haihao Group to learn more about ASME B16.47 Class 900 Series A flanges or request a customized quote. Our team is ready to support your high-pressure piping system needs! Email:sales@haihaogroup.com