Anchor Flange

What is Anchor Flanges? Uses, Dimensions, and Types

Byharsh jain

An anchor flange, also known as a restraint flange, is a type of pipe fitting used to support or restrain the movement of pipes within industrial piping systems. This versatile flange facilitates easier installation and maintenance and finds application across various industries. Exploring the uses of anchor flanges, the welding procedures associated with them, and the available types provides a comprehensive understanding of their functionality and versatility. Let’s take a look at the uses of anchor flanges, the welding process for them, and the types available.

What is Anchor Flanges?

Anchor flanges are a type of metal fastener used to securely connect piping systems together. They are a permanent fixtures and typically fastened with bolts and screws. They are commonly constructed from aluminum, steel, or stainless steel, although other metals such as copper or galvanized iron might be used in some cases. Anchor flanges are popular for a variety of applications including construction, industrial equipment, automotive assembly lines, and shipbuilding. Because they provide a secure fit it makes them ideal for use in high-pressure pipelines as well as low-pressure applications such as water systems. Many industries rely on the strength and integrity provided by these versatile fasteners when applying pressure to complex machinery.

Anchor Flanges Uses

Anchor flanges are used when pipes need to be securely connected while also allowing some movement due to temperature fluctuations or ground movements. In such cases, anchor flanges are ideal because they prevent damage that could otherwise occur due to excessive strain on the pipe. They also provide more flexibility than rigid connection methods like welding and can make it easier to replace damaged pipes with minimal effort.

Anchor Flanges Welding

The welding process for anchor flanges is relatively straightforward and involves connecting the two halves of the flange together before welding them onto the pipe itself. Depending on the size of the pipe and its location, welders may choose to use traditional arc-welding techniques or opt for more modern automated welding machines that can quickly weld large amounts of material at once. Additionally, proper preparation (such as ensuring there are no gaps between the two halves) is essential for successful welding results.

Types of Anchor Flange

Anchor flanges come in many different shapes and sizes to fit various applications. The most common types include:

  • Threaded anchor flanges, which feature threaded connections.
  • Socket welded anchor flanges, which have socket welds.
  • Slip-on anchor flanges, which are designed for quick installation.
  • Blind anchor flanges, which are ideal for high-pressure applications requiring pressure containment.

Depending on your specific needs, consider one type over another when selecting an anchor flange for your project.

Anchor Flange Dimensions

Anchor Flange Dimensions

NPS (Normal Pipe Size) Diameter Of Bore Pre Beveled

Hub Diameter

 For 40%F

Temperature Change

 For 90%F

Temperature Change
Daimeter O Daimeter Q Daimeter L Daimeter X Daimeter O Daimeter Q Daimeter L Daimeter X
6 6.75 9.5 0.63 2.88 7 11.25 1.13 3.63 7
8 8.75 12.13 0.75 3 9 14.63 1.38 3.88 9
10 11 14.88 0.88 3.13 11.13 17.13 1.5 4 11.13
12 13 17.75 1 3.5 13.25 19.25 1.63 4.25 13.25
14 14.25 19.63 1.13 3.75 14.5 20.5 1.75 4.5 14.5
16 16.25 22.38 1.31 4.19 16.3 22.5 1.81 5 16.63
18 18.25 24.63 1.38 4.63 18.63 24.63 1.94 5.5 78.63
20 20.31 26.63 1.5 4.88 20.63 26.75 2 6 20.75
22 22.31 28.63 1.63 5.13 22.63 28.75 2.13 6.25 22.75
24 24.38 30.63 1.69 5.44 24.63 31 2.25 6.75 24.88
26 26.38 32.75 1.75 5.88 16.75 32.88 2.31 7.13 26.88
28 28.38 34.88 1.81 6.19 28.88 35 2.38 7.5 29
30 30.44 36.88 1.94 6.56 30.88 37 2.5 8 31
34 34.5 41 2.06 7.19 35 41 2.75 8.75 35
36 36.5 43 2.13 8 37 43 2.88 9.63 37

Conclusion

Anchor flanges are an incredibly useful tool for securely connecting pipes while allowing some level of movement due to temperature fluctuations or ground movements. They come in many shapes and sizes depending on their intended use case and require careful welding preparation before being installed onto a pipe system. With their versatility and convenience, it’s easy to see why they remain a popular choice among engineers looking for secure yet flexible connections in their industrial piping systems today!

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