Eight Essential Things to Know Before Selecting Pipe Flanges

Pipe flanges and fittings are essential for transporting oil and gas over long distances. The piping for such fluids must be safe, hence pipe flanges are fundamental accessories in such an environment. Industrial flanges must perfectly fit the system and form strong joints. Hence, the selection of fitting flanges is crucial in deciding the system’s life. The following blog offers an overview of things to consider before selecting pipe flanges from the reputed flanges supplier in Mumbai.

Essential things to know before selecting pipe flanges

1. Select the type of flange per project application

Pipe flanges and fittings are available in different types like blind flanges, socket weld pipe flanges, lap joint flanges, weld neck pipe flanges, etc. One can study the features of the pipe flanges and select these flange types per their project requirement. While one can easily differentiate between these flanges, it is essential to note that flanges have additional features that can make the job complex. Often reputed flange manufacturers in Mumbai provide information about these features. If you are unsure about the right flange type, it is advisable to seek consultation from experts at the stainless steel flange manufacturers in India like Doshi Impex India. 

2. Selecting the flange size

Pipe-fitting flanges are available in different sizes per their designs. It is also essential to consider the flange diameter (I.D. and O.D.), bolt holes, bolt diameter, thickness, etc. The flanges are usually available in standard size. But in the case of certain projects, one can also order custom flanges from pipe fittings and flanges manufacturers like Doshi Impex India.

3. Selecting the pressure class

The pressure class of flanges is essential to signify the pressure margins for the safe functioning of the flanges and system reliability. All steel pipe flanges and flanged fittings are classified per the pressure levels indicating the high and low-pressure ranges of the flanges. It is essential to note that one must select the pressure rating of the flanges similar to the pipe and valve pressure ratings.

Selecting the right pressure ratings for flanges also helps choose the flange dimension. The usual pressure ratings of flanges range from 125 psi to 900 psi. Selecting the pressure ratings of the flanges involves considering factors like material, size, temperature ranges, etc.

4. Selecting the right flange thickness

Depending on the flange thickness, one can determine the flange pressure ratings. Thicker flanges can resist high pressures and vice versa. The flange fittings have designations with pressure ratings. One can make their selection accordingly.

5. Checking the flange standards

A reputed industrial flange manufacturer like Doshi Impex India features flanges per international standards. Some of the common flange standards involve ANSI, JIS, and DIN. One can check the flange standard per their application. For instance, if your project requires BS10 flanges you have different flanges in the same category as D Table Flange, E Table Flange, and F Table Flange varying per their pressure ranges and other properties. If you are unsure about the flange selection, especially their standards, you can consult the experts at the reputed flange manufacturer in Mumbai.

6. Selecting the flange material

Selecting the right flange material is another crucial factor in flange selection. One can choose the pipe-fitting flange material depending on the application. For instance, corrosion prone-environments require corrosion-resistant flanges like stainless socket weld flanges. Some common flange materials available at Doshi Impex India involve stainless steel, carbon steel, nickel, etc.

7. Selecting the bolt holes for flanges

The bolt holes of flanges are essential to determine the flange pressure ratings and size. The bolt-hole size, the diameter of the pitch circle, and the bolt-hole number are crucial factors during flange selection. A thick and strong bolt means a high-pressure handling capacity of the fitting flanges. 

8. Selecting the flange facing

Flange facing is another factor for determining the flange type. The face of the flanges offers a sealing effect. Some common flange faces involve full face flange, ring-type face flange, lap joint flange, raised face flanges, etc.

Final thoughts

The above guide will help you select the right flange fitting for your project. If you are still unsure about choosing the flanges, you can consult experts at Doshi Impex India, a leading manufacturer of flanges and pipe fittings in Mumbai. For more information, visit their website today!