1. Welding Neck Flange
A weld neck flange (also known as a high-hub flange and tapered hub flange) is a type of flange. There are two designs. The regular type is used with pipes. The long type is unsuitable for pipes and is used in a process plant.
2. Blind Flange
A blind flange is a plate for covering or closing the end of a pipe. A flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together.
3. Lap Joint Flange
Lap Joint pipe flanges are often used for applications that require frequent dismantling. Slip-on Pipe flanges with a hub have published specifications that range from 1/2″ thru 24″. Sizes above 24″ are produced as lap joints to slip on dimensions.
4. Screwed Flange
These flanges are similar to slip-on pipe flanges. Screwed flanges are used with pipes that have external threads that are often used for small diameter, high-pressure requirements.
5. Slip On Flange
They’re manufactured with an inside diameter that is slightly bigger than the pipe’s outside diameter. These attachments are connected to the pipe via fillet weld at the top and bottom of the flange. Slip on pipe flanges are typically provided with a raised or flat face.
6. Socket Weld Flange
Socket-weld pipe flanges are typically used on smaller sizes of high-pressure pipes. These pipe flanges are attached by inserting the pipe into the socket end and applying fillet weld around the top.