All dimensions are in mm. BS 10:1962 Table E Plate Flange. Size. A. B. C. D. E. No Of Bolts. ½”. 95.00. 22.30. 6.40. 66.70. 12.70. 4.00. ¾”. 102.00. 27.70...
BS 10, also known as the British Standard for flanges, is a crucial reference for engineers and designers working with pipework systems. This standard defines dimensions and tolerances for flanges used in various industries, including oil and gas, water, and chemical processing. Today, we'll delve into the specifics of BS 10 Table E, which outlines dimensions for flanges with raised faces.
Table E in BS 10 provides dimensions for flanges with raised faces, which are commonly used in high-pressure and high-temperature applications. These flanges have a raised face that extends beyond the bore, providing a larger sealing surface area. The table includes dimensions for bore sizes ranging from 1/2" to 24", with corresponding hub dimensions and bolt hole patterns.
BS 10 Table E lists several key dimensions for each flange size. Here are the most important ones:

| Bore (Nominal Size) | Hub Diameter (mm) | Hub Thickness (mm) | Bolt Circle Diameter (mm) | Bolt Hole Pattern | Face Width (mm) |
|---|---|---|---|---|---|
| 1/2 | 32 | 10 | 57 | Staggered | 10 |
| 3/4 | 45 | 12 | 76 | Staggered | 12 |
| 1 | 57 | 15 | 95 | Staggered | 15 |
Using the dimensions outlined in BS 10 Table E ensures consistency and interoperability in pipework systems. By adhering to these standards, engineers can ensure that flanges from different manufacturers are compatible, reducing the risk of leaks and equipment failure. Moreover, using standard dimensions simplifies inventory management and reduces costs.
Flanges with raised faces, as defined in BS 10 Table E, are typically used in high-pressure and high-temperature applications. They are also suitable for systems handling hazardous or toxic fluids. The larger sealing surface area provided by the raised face offers enhanced resistance to high pressures and temperatures, making these flanges ideal for critical applications.
In conclusion, BS 10 Table E provides vital dimensions for flanges with raised faces, enabling engineers to select the appropriate flange for their specific application. By understanding and adhering to these standards, engineers can ensure the safety, reliability, and efficiency of their pipework systems.

<strong>BS10 Plate Flanges</strong><p>All dimensions are in mm. BS 10:1962 Table E Plate Flange. Size. A. B. C. D. E. No Of Bolts. ½”. 95.00. 22.30. 6.40. 66.70. 12.70. 4.00. ¾”. 102.00. 27.70. 6.40.</p>
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