A stainless-steel flange is an instrument by which a piping system is formed by connecting pipes, valves, and other hardware. It is also easy to reach for checking or modification purposes. Generally, the flanges are soldered or screwed to the whole piping system. The flanged joints are created by fastening two flanges together with a gasket to give a proper seal. We will do a detailed study on which type of flange should be used in what size of the pipe.
1) Threaded Flanges – Threaded flanges have other names, but it is also commonly known as screwed flanges. They are threaded from inside on the flange bore, which corresponds to thread on the pipe. This is to make sure that both fit properly. This attachment method is quick and simple, but unfortunately not ideal for higher temperature and pressure applications. One can find screwed flanges used primarily in installations like air and water services.
2) Slip-On Flanges – The Slip-On flange has an external hole from which a pipe can fit, with the matching diameter. The flange is mounted on the pipe and then soldered thoroughly to give a firm seal to the tube. For low temperature and pressure conditions, the slip-on flange is highly suitable. This flange comes in various sizes and can also be used in large dimensions to attach a large-scale pipeline system to the storage tank nozzles. These stainless-steel flanges manufacturers make these flanges using the traditional method, by molding metal and fitting them using a hub. These flanges are also made from sheets of metal, so they often do not come with a base.
3) Lap Joint Flanges – There are two essential components in the lap flange, a rod end and a loose flange in the back. The end of the stub is joined by butt welding it to the shaft, and the flange part moves freely around the pipe. The rear flange can indeed be constructed from a range of material other than stub material. But the most commonly used material is carbon steel, as it usually minimizes the production cost. When repeated removal and replacement is involved and has limited space, the lap flange comes very usefully.
4) Socket-Weld Flanges – This type of flanges has a female connector in the socket where the tube is mounted. From outside of the pipe, Filet soldering is performed to give it a strong seal. It is commonly used in small pipeline systems and can only be used with low pressure and temperature.
5) Weld Neck Flanges – The most commonly used kind of flanges in the piping systems is the weld neck flange. The effect of the butt soldered tube is that this delivers the best quality of joint integrity. In the application of high pressure and temperature, weld neck flanges are highly preferred. Weld neck flanges in respect of other flanges are bulky and expensive. Thus, they are only used in heavy-duty piping systems.
I hope this article can deliver a good study on which type of Stainless Steel Flanges can be used in different situations and places. All have a different purpose and suitable mechanisms to fit multiple needs.
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