How i determine number of bolts on flange

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Discussion Overview

The discussion centers around determining the number of bolts required for a flange, including considerations of flange size, bolt specifications, and relevant engineering standards. It encompasses aspects of design, application, and theoretical underpinnings related to flange construction.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested, Homework-related

Main Points Raised

  • One participant requests additional context to provide a helpful answer, asking whether the inquiry pertains to design, resources used by engineers, or theoretical background.
  • Another participant suggests consulting local codes for flanges based on pressure and size, or checking manufacturer websites for detailed specifications.
  • A participant provides specific dimensions for the flange (diameter of 335mm, PCD of 290mm, and bolt size M12) and seeks confirmation on their adequacy, along with a request for calculations and formulas.
  • It is proposed that determining the necessary pressure rating for the application, along with the flange diameter, could guide the user to a flange rating chart that specifies bolt sizes and quantities.
  • Another participant notes that more information about the flange's application is needed to provide a complete answer.

Areas of Agreement / Disagreement

Participants do not reach a consensus, as there are multiple competing views on how to approach the problem, and further information is needed for a definitive answer.

Contextual Notes

Limitations include the lack of specific application details, dependence on local codes and standards, and the need for additional information to refine calculations.

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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