A threaded flange is a type of flange used in piping systems to connect pipes or other equipment. It has internal threads that match the external threads of the pipe or fitting it’s being connected to. This design allows for a secure, leak-proof connection without the need for welding.

Here are some key points about threaded flanges:

1. Design: Threaded flanges are designed with internal threads that match the threading on the pipe or fitting. This makes them easy to install and remove, as they screw onto the threaded pipe or fitting.

2. Materials: They are available in a variety of materials, such as carbon steel, stainless steel, and alloy materials, depending on the application and the environment in which they will be used.

3. Applications: Threaded flanges are often used in low-pressure applications and in situations where welding might be difficult or undesirable. They are common in systems where frequent disassembly is necessary or where welding could be problematic.

4. Advantages: They offer a relatively simple and cost-effective means of joining pipes. They can be used in environments where welding is not feasible or where the pipes need to be easily removed or replaced.

5. Disadvantages: Threaded connections may not be suitable for high-pressure applications due to the risk of leakage and the limited strength of the threads compared to welded or bolted flanges. They also might not be suitable for high-temperature applications where the threads can become weakened or damaged.

6. Installation: When installing threaded flanges, it’s important to use thread sealants or pipe dope to ensure a leak-proof seal. Proper torque must be applied to avoid over-tightening, which can damage the threads or lead to deformation.

Overall, threaded flanges are a versatile and useful component in various piping systems, particularly where ease of assembly and disassembly is important.