6 Types of Flanges from Doshi Impex India

The flange is an essential component of any piping system. It establishes connections between different systems. It is prominent at places where welding operations are not possible. Every piping system requires different types of flanges. It depends on various factors such as the purpose of the system, required strength of the joints, pressure and temperature levels, and more. 

While pipe fitting flanges are available with many suppliers, it is essential to make the right choice, as these components can make or break your system. A reputed stainless steel pipe fittings supplier in UAE and India, like Doshi Impex India, also offers an extensive range of pipe fitting flanges that are essential for standard applications.

Let’s take a look at the six most commonly used types of flanges from Doshi Impex India for hydraulic pipe fittings.

1. Welding Neck Flange

What is it?

A welding neck flange is typically suitable for applications involving high temperatures, high pressure, and smooth flow of fluids through the pipe systems. It features a tapered neck that can be welded and attached with a pipe. Since this flange can avoid pressure drops, it prevents issues like turbulence and corrosion of metals in the joints.

Salient features and mechanism:

The weld bevel at the end of the flange forges a V-shaped connection with the pipe. It allows the fluid or the gas to flow smoothly through the pipe connectors with minimum restriction. The tapered hub of the welding neck flange permits an even distribution of pressure between the pipe and the flange, making it ideal for high-pressure applications.

The welding neck flange from Doshi Impex India features high-quality steel that limits mechanical stresses.

2. Slip-on Flange

What is it?

The design of a Slip-on flange ensures the inner diameter of the flange is a bit bigger than the outer diameter of the pipe. Due to its unique design, one can directly attach the flange over the pipe, using two fillet welds; one inside and outside of the flange.

Salient Features:

It is easier to align with other parts as the pipe slides into the flange. It offers better leak proofing and carries fewer installation costs.

Doshi Impex India’s Slip-on flanges have multiple pressure ratings ranging from class 150 to class 2500.

3. Threaded Flange

What is it?

Threaded flanges are attached to the pipes by screwing the hydraulic pipes onto the flanges instead of welding. They are also known as screwed flanges, NPT flanges, companion flanges, and more.

Salient Features:

This type of flange features a thread inside the bore to connect with the matching male threads, thereby avoiding the need for welding. It is ideal for applications that require periodical connection and disconnection or for high-risk environments such as gas plants where it is impossible to perform welding procedures.

Although generally threaded flanges are available in ranges of 1.5 inches to 6 inches, Doshi Impex India can provide NPT threaded flanges up to 24 inches.

4. Socket Weld Flange

What is it?

Socket weld flanges are fitted with pipes by way of a single fillet weld on the flange instead of two welds, as in the case of a slip-on flange. The flange is suitable for high-pressure applications used for transferring liquids that are not highly corrosive.

Salient Features

It features a shoulder-like space inside the bore, acting as a guide for determining the depth of the pipe essential to be inserted inside the flange. These flanges are very sturdy and have a better fatigue strength.

Socket weld flanges from Doshi Impex India are durable and flaunt a sturdy construction. They are customizable as per client specifications.

5. Lap Joint Flange

What is it?

Lap Joint Flanges have a flat face and a stub end. It is slipped over the pipe and fastened to the stub end with the help of bolts. The flange is perfect for systems that constantly require removal and reinstallation.

Salient Features

They are ideal for stainless steel or nickel alloy piping systems as the material of the flange need not be of a higher grade, it reduces the overall cost. The procedure to get the bolts in is simple as the flange can be shifted around the pipe to align with the bolts.

Doshi Impex India features lap joint flanges in higher pressure classes with a height addition for better connection.

6. Blind Flange

What is it?

Blind flanges do not have a center bore and are typically used to seal off a valve or a pipeline to block the flow of the liquid. They should be capable of withstanding enormous pressure.

Salient Features

These flange fittings permit convenient probing into the pipeline. Since they are movable, they can perform maintenance activities at the end of the pipes.

Explore this extensive range of pipe-fitting flanges at Doshi Impex India today!

Doshi Impex India features extensive types of flanges for industrial applications. All their types of flanges meet strict quality standards, utilize the finest quality materials, and are available in different dimensions, pressure ratings, and other specifications. Explore their extensive range today.