A threaded flange is a type of flange that is threaded to the pipe. Designed with a loose flange.
Threaded flanges are made by machining the inner bore of the flange into a pipe thread and connecting it with a threaded pipe. It is a non- welded flange . It welded flange or welded flange, compared with the threaded mounting flange, convenient maintenance, the line can not be welded in some field of use. Alloy steel flanges have sufficient strength, but are not easy to weld, or the welding performance is not good, you can also choose a threaded flange. However, when the pipe temperature changes sharply or the temperature is higher than 260 ° C and lower than -45 ° C, it is recommended not to use a threaded flange to avoid leakage.
Threaded flanges look very similar to Slip-On flanges but the main difference is that the threaded flange has been was bored out to match a specific pipe inside diameter. The backside of this center opening is then threaded with the relevant-sized tapered pipe thread.
The advantage of threaded flange is that no welding is required, and the additional torque generated on the barrel or pipe is small when the flange is deformed. The disadvantage is that the flange is thick and the cost is high. The threaded flange is suitable for connection to high pressure pipes.