For bolting a 12 inch, 600 class flange joint, what size and how many studs are required?

When determining the appropriate size and quantity of studs required for bolting a 12-inch, 600 class flange joint, it's important to refer to standard bolting practices and industry specifications.

For a 600 class flange, which has a specific pressure rating, the stud size typically needs to be substantial enough to withstand the pressure and ensure a secure seal. In this case, a 1-1/4 inch diameter for the studs is appropriate, as it provides sufficient strength and durability for the application.

Furthermore, the quantity of 20 studs is determined by the number of bolt holes typically found in a flange of this size and class. Flanges are designed to distribute the load evenly across all bolts, and having 20 studs allows for that distribution in a 12-inch, 600 class flange joint, facilitating proper sealing and performance under pressure.

In summary, the size of 1-1/4 inch and quantity of 20 studs corresponds to established engineering practices for ensuring the integrity of high-pressure flange connections.