Eight Essential Things to Know Before Selecting Pipe ...

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.

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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

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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!

Flanges are integral to the oil and gas industry, but they&#;re still a bit of a mystery to the average consumer. The piping systems that we rely upon today cannot function properly without flanges, yet they often are poorly maintained or bought in the wrong form. The more that is known about flanges, the less risk there will be that consumers invest in parts that don&#;t really work for them.

Below are some of the facts that you may not know about flanges. These key pieces of equipment can be challenging, but they are necessary for the continuing function of the pipeline industry.

1. Flanges Can Be Forged Or Cast

There are two different methods used for the creation of flanges. One is casting, while the other is forging. Both forged and cast flanges can work well, but each of the production method has advantages and disadvantages.

Cast products are essentially created when molten metal is poured into a mold or vessel in order to create the desired shape. Forged products are created when steel ingots or billets are exposed to mechanical and thermal pressures, which manipulate them into different shapes.

The main issue with cast flanges is that they are more prone to internal defects. This means that they cannot be used in extremely high-pressure situations, as they may fail suddenly with no warning. Due to their risk of internal flaws, cast flanges are also more likely to be heavily affected by corrosion.

In contrast, forged flanges are not only more reliable, but ultimately able to withstand more pressure. Forged parts actually have 37% higher fatigue strength, which means that they last longer. Therefore, it&#;s better to invest in high-strength forged products as they are usually better long term investments when used within high-pressure applications.

2. Flanges Come In Many Different Forms

Typically, flange distributors will offer many different types of flanges. There is no single type of flange that is right for every situation. Rather, they need to be selected carefully. If the wrong flange is used in a project, it will fail. Some of the popular types of pipe flanges include blind, weld neck, slip-on, lap joint, threaded, socket, and orifice flanges. Each of these serves a different purpose.

An orifice flange, for example, is meant to house an orifice meter that can track the flow speed within a pipe. This makes it one of the more complex forged parts on the market. On the other hand, a blind flange is considered one of the simplest flange designs. It&#;s little more than a disk used to block the opening of a pipe, with its main difference being that it lacks an opening in the center through which fluid can flow.

If multiple types of products are needed for one project, it&#;s wise to work with a single distributor for all of them. This helps avoid sourcing issues and ensures that all of the products are made with the exact same quality standards.

3. Flanges Are Made From Many Different Materials

Lots of materials are used to create this product, including carbon steel and stainless steel, as well as aluminum, cast iron, bronze, and even plastic. At times, different materials may be used to create the same single flange. This is because such products are known as lined flanges, and are essentially built on internal layers of different lining materials. The performance of a product can be affected by the materials used, but the production process is just as important.

4. Flanges Offer Different Material Grades

It&#;s important to know that the product you&#;re buying is of the correct material grade. Otherwise, it can be far too easy for you to buy a flange that is not suitable for your project. The material grade comes in a combination of numbers and letters and is indicative of the use, mechanical properties, and chemical composition of a product. Study material grades carefully before making a purchase decision.

Without the correct flanges in place, a project can fail spectacularly, resulting in injury or even loss of life. Pay careful attention to the types of flanges being bought for a product, as well as where they came from and how they were made.

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