When selecting the right flange for your industrial applications, understanding flange dimensions and weights is crucial. Properly sized flanges ensure a secure and efficient connection between pipes, valves, and fittings, while accurate weight calculations help with material handling, installation, and structural support. At StuddingOutletFlanges.com, we specialize in providing high-quality flanges that meet industry standards, ensuring reliability and precision for every project.
Why Flange Dimensions Matter
Flange dimensions dictate compatibility, strength, and sealing efficiency. Different industries require flanges to meet strict size and pressure specifications, such as those set by ASME, ANSI, API, and DIN standards.
Key Flange Dimensions
- Outside Diameter (OD) – The total outer width of the flange.
- Bolt Circle Diameter (BCD) – The circle where bolt holes are evenly spaced.
- Number of Bolt Holes – Ensures secure fastening and load distribution.
- Bolt Hole Diameter – Matches the correct bolt size for proper fitment.
- Flange Thickness – Determines the structural integrity and pressure rating.
- Raised Face (RF) or Flat Face (FF) Height – Affects sealing and gasket selection.
- Pipe Bore or Inside Diameter (ID) – Must align with the pipe for flow efficiency.
Flange Weights and Their Importance
Flange weight is a significant factor in transportation, installation, and system load calculations. Heavy-duty industrial applications require precise weight estimates to ensure safe handling, proper support structures, and cost-effective material usage.
Factors Affecting Flange Weight
- Material Type – Common materials include carbon steel, stainless steel, and alloy steel, each with different densities.
- Flange Type – Weld neck, slip-on, blind, threaded, socket weld, and lap joint flanges have varying weights due to their designs.
- Pressure Class – Higher pressure ratings (150, 300, 600, 900, 1500, 2500) result in thicker and heavier flanges.
- Face Type – Raised face (RF) and ring-type joint (RTJ) flanges may weigh more due to added sealing features.
Standard Flange Dimension & Weight Chart
Below is a general reference for ANSI/ASME B16.5 standard flanges (weights may vary by material):
| Flange Size (Inches) | Pressure Class | OD (Inches) | Bolt Holes | Approx. Weight (lbs) |
|---|---|---|---|---|
| 2″ | 150 | 6.00 | 4 | 9 |
| 4″ | 300 | 9.00 | 8 | 32 |
| 6″ | 600 | 14.00 | 12 | 120 |
| 8″ | 900 | 16.50 | 12 | 260 |
| 12″ | 1500 | 23.00 | 16 | 550 |
| 16″ | 2500 | 30.00 | 20 | 1250 |
For a complete dimension and weight chart, please visit StuddingOutletFlanges.com or contact us for custom requirements.
Choosing the Right Flange for Your Needs
To ensure optimal performance and safety, consider the following when selecting a flange:
- Application & Pressure Rating – Choose a flange class that matches the system’s pressure requirements.
- Material Compatibility – Ensure the flange material is resistant to the fluids and environmental conditions it will encounter.
- Weight Considerations – Verify handling and installation capabilities based on weight constraints.
- Standards Compliance – Confirm the flange meets ASME/ANSI/API requirements for interchangeability and performance.
Get Expert Assistance
We offer a wide range of flanges with precise dimensions and weights to meet your industrial needs. Our team of experts is ready to assist you in selecting the right flange for your specific applications. Contact us today for detailed flange charts, custom fabrication, and expert guidance!