Final answer:
The mentioned flange types: Threaded, Slip-On, Welding Neck, Lap Joint, Socket Type, and Blind Flange, are all used in piping and plumbing systems to join pipes and valves, each serving a unique purpose.
Step-by-step explanation:
The types of flanges you've listed are indeed common in various piping and plumbing systems. Here's a brief description of each:
- Threaded Flanges - These flanges are designed to be connected to pipes without welding. They have threads inside the flange bore which fits with the external threads of the pipe.
- Slip-On Flanges - With a slightly larger diameter than the pipe, these allow the pipe to slip into the flange before welding at both ends, top and bottom.
- Welding Neck Flanges - Recognized by their long tapered neck, these flanges are welded to the pipe. The tapered neck can provide strong reinforcement and withstand different levels of pressure and stress.
- Lap Joint Flanges - Used with stub end fittings, they are typically welded to the pipe, and the flange can rotate around the stub end. This is beneficial for systems requiring frequent dismantling for inspection and cleaning.
- Socket Type Flanges - They have a socket that the pipe fits into, and then fillet welding is applied around the top. This allows for a smooth bore and better fluid flow.
- Blind Flanges - Unlike the other flanges, blind flanges have no opening for fluid to pass through and are used to seal the end of piping systems or pressure vessel openings.
In summary, all the mentioned flange types serve different purposes in the joining and function of piping systems.