How i determine number of bolts on flange

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SUMMARY

To determine the number of bolts required for a flange, one must consider the flange diameter (335 mm), pitch circle diameter (PCD) of 290 mm, and bolt size (M12). Engineers should reference local codes and flange rating charts to ascertain the appropriate pressure rating and corresponding bolt specifications. Manufacturers' websites provide essential details for specific applications. Proper calculations involve using formulas related to pressure ratings and flange dimensions.

PREREQUISITES
  • Understanding of flange design principles
  • Familiarity with pressure rating charts
  • Knowledge of local engineering codes
  • Basic mechanical engineering calculations
NEXT STEPS
  • Research flange rating charts for various pressure ratings
  • Learn about local engineering codes related to flange design
  • Explore mechanical engineering calculations for bolt load and spacing
  • Investigate resources from flange manufacturers for design specifications
USEFUL FOR

Mechanical engineers, design engineers, and anyone involved in flange assembly and pressure vessel design will benefit from this discussion.

sanjay pradhan
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how i determine number of bolts on flange
 
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You will have to tell us much more before we will be able to give you a helpful answer. Are you building something and you want help deciding how to design a particular flange? Are you asking what resources are used by engineers to design such things? Or are you asking what theory and experiment lies behind these resources?
 
Look at your local codes for flanges at the pressure and size that you are operating at. Alternatively go on a flange manufacturers website they'll give you details.
 
flange dia-335mm
pcd- 290 mm
bolt size - M12
Is it ok?
If yes then provide proper calculation with formulas
 
Depending on your application, it might be easier to determine what pressure rating you need and along with your flange diameter 335 mm which is around 13 inches, look for a a flange rating chart. This will tell you the size of bolts and number of bolts for that flange of that particular rating.

Otherwise, you will need a bit more information for your flange.
 

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