8 Different Types of Stainless-Steel Flanges one Should Know About

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The following are the top 8 stainless steel flanges used in stainless steel pipelines:
  1. SS Weld Neck Flanges: These flanges are distinguished by their protruding necks. The weld neck flanges have the same bevel & thickness of the pipe. This flange is considered for severe service conditions such as sub-zero or high temperatures & high pressure.
  2. SS Slip-On Flanges: These are the most affordable varieties of flanges available for purchase. The slip–on flanges have a slightly larger diameter than the pipe, which makes it easier to slip them over the pipe. These stainless steel flanges are fillet welded to a position & are ideal for low-pressure applications.
  3. SS Blind Flanges: The flanges are designed without a bore, & are used to seal vessel openings or piping systems. These flanges are ideal for piping systems or vessels that require regular inspection. The blind flanges can be supplied with or without hubs. This flange can easily handle high stress caused due to internal pressure.
  4. SS Threaded Flanges: These types of flanges are used for special applications & can be easily assembled without welding. Stainless steel threaded flanges are compatible with pipes with external threads. The flanges are not recommended for applications where bending stresses, high pressure or high temperatures are involved.
  5. SS Lap Joint Flanges: The lap joint flanges are the type of slip-on flanges that are used with stub end fittings. These flanges are ideal for piping systems that require regular inspection & maintenance such as low alloy steel pipes or carbon steel pipes.
  6. SS Socket Weld Flanges: The flanges are designed for use on small diameter & high-pressure piping. The socket weld flanges have internal welds which contribute to their durability as well as fatigue strengths. These flanges are used in the chemical processing industry.
  7. SS Orifice Flanges: The function of these steel flanges is to provide access to a line for metering liquids or gases. The orifice flanges are installed with orifice plates or flow nozzles.
  8. SS RingType Joint Flanges: These flanges are used for high pressure & temperature applications. The ring-type joint flanges feature a groove that can be easily compressed on blind, slip-on or weld neck flange. The flanges help avoid leaks in pipelines where media is transferred at high pressure & high temperature.


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