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Types of Stainless Steel Flanges and Their Applications

- Aug 08, 2017 -

blob.pngblob.pngStainless steel is one of the most popular metals used today. Various types of industrial, commercial, and residential items are created using this metal. Stainless steel pipes are one of the most popular products created out of this metal. These pipes are supported by certain accessories which are also made from stainless steel. Stainless steel flanges are one such accessory used to support stainless steel pipes. There are a vast variety of flanges available for purchase. This post discusses eight important types of flanges that you should know about.

 

The following are the top 8 stainless steel flanges used in stainless steel pipelines:

Weld Neck Flanges: Also known as a high-hub flange and tapered hub flange, these flanges are distinguished by their protruding necks. There are two designs. The regular type is used with pipes. The long type is unsuitable for pipes and is used in process plant

Slip-On Flanges: As made obvious by their name, these pipe flanges slip over the pipe. 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.

Blind Flanges: A blind flange is a solid disk used to block off a pipeline or to create a stop. It is machined in the same manner as a regular flange with the mounting holes around the perimeter and the gasket sealing rings machined into the mating surface. The difference is that a blind flange has no opening to allow fluid to pass through. These flanges are ideal for piping systems or vessels that require regular inspection.

Threaded Flanges: Threaded flanges are widely demanded as pipe flanges i.e called as threaded pipe flanges used in different industrial applications. They are the special type of pipe flanges which can be attached to the pipe without welding. Threaded flanges are threaded in the bore which match an external thread on the pipe.

Lap Joint Flanges: Lap joint flanges or backing flanges are normally used with collars or stub ends. Each lap joint flange usually has a radius machined into the bore identical to that of the stub end or collar so that it can sit directly on it. The stub end or collar is welded on to the pipe leaving the lap joint flange loose behind it.

Socket Weld Flanges: A Socket Weld Flange is similar to slip-on flanges, however, socket welds have an internal recess on the inside diameter to allow for a smoother flow of the process fluid. The positive of this is that is creates a smooth bore with the proper welding and grinding.

Orifice Flanges: Orifice Flanges are used with orifice meters for the purpose of measuring the flow rate of either liquids or gases in the respective pipeline. Pairs of pressure "Tappings", mostly on 2 sides, directly opposite each other, are machined into the orifice flange.

Ring–Type Joint Flanges: Ring Type Joint Flange is a method of ensuring leak proof flange connection at high pressures. A metal ring is compressed into a hexagonal groove on the face of the flange to make the seal. This jointing method can be employed on Weld Neck, Slip-on and Blind Flange.

The choice of the right flanges will depend on your application. You can always consult an expert like Bytune who will help you make the right decision.


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