A Guide to Stainless Steel Flange Types

Flange is usually used for connecting pipes or valves. The flange connection type usually comes with double units, with a gasket and some bolts & nuts to connect each other. Manifest Alloys produce various types of flanges being one of the best Stainless Steel Flanges Manufacturers. Contact us for steel products with complete specifications and supreme quality. With our technical force, advanced equipment and skilled craftsmanship, we supply various types of flanges and good quality is guaranteed.

Slip on Flange

The slip on flange is used by inserting the pipe into the inner hole of the flange, as the flange’s inner diameter is a little bigger than the pipe’s OD, the parts could be connected by lap welding at the top and bottom of the flange. Slip on steel pipe flange normally with raised face (RF) or flat face (FF). Slip on pipe flange is suitable for lower pressure, general temperature, and normal circumstance pipelines. It is easy to install and with lower cost/price, has been most used in the common industries.

Stainless Steel Lap Joint

Designed for use with a stub end fitting, these stainless steel flanges are not directly welded or fixed to the pipe but slip over the stub end. Their ability to rotate freely simplifies alignment during installation. Ideal for piping systems that require frequent dismantling, lap joint flanges are perfect for applications involving regular inspection, cleaning, or maintenance.

Threaded Flange

Threaded flange could be made of alloy steel, which has higher strength but bad welding performance. On the other hand, it could not use in extreme conditions as the temperature more than 260 ℃ or lower than -45℃, to avoid leakage. The threaded flange is the flange with threads in its inner surface, as to connect the threaded pipe. The advantage of this connection type is non-welding, so it is very convenient to install, and easy to repair.