Incoloy 825 Welded Pipe

Incoloy 825 Welded Pipe Manufacturer, Supplier in India

Incoloy 825 welded pipe is a type of piping material widely used in various industries due to its exceptional properties and characteristics. It is a nickel-iron-chromium alloy with the addition of molybdenum, copper, and titanium, which imparts outstanding corrosion resistance in both reducing and oxidizing environments. The key characteristic of Incoloy 825 welded pipe is its resistance to a wide range of corrosive substances such as sulfuric acid, phosphoric acid, and seawater.

It exhibits high strength, excellent mechanical properties, and good weldability, making it suitable for demanding applications in chemical processing, oil and gas, power generation, and marine industries. Furthermore, Incoloy 825 welded pipe maintains exceptional performance even at elevated temperatures, making it a reliable choice for high-temperature applications. Its superior resistance to stress corrosion cracking and pitting corrosion further enhance its suitability for challenging environments.

What industries commonly use Incoloy 825 welded pipe, and what are its specific applications in those industries?

Incoloy 825 welded pipe has extensive usage across various industries requiring reliable corrosion-resistant piping solutions. One prominent industry that utilizes this material is the chemical processing industry, which is employed in constructing reactors, heat exchangers, and piping systems for handling corrosive chemicals like sulfuric acid, phosphoric acid, and organic acids. The oil and gas industry also relies on Incoloy 825 welded pipe for applications such as offshore drilling, oil refineries, and gas processing plants, where it is used in piping systems, downhole tubular, and well casings exposed to corrosive environments.

Another significant sector is power generation, where this alloy is utilized in desulfurization systems, flue gas scrubbers, and pollution control equipment due to its resistance to sulfur compounds and acidic gases. Incoloy 825 welded pipe finds application in the marine industry for seawater handling systems, offshore platforms, and shipbuilding, thanks to its exceptional resistance to corrosion in saline environments. The unique properties of Incoloy 825 make it an ideal choice for these industries, providing longevity and reliability in demanding applications.

Electric Resistance Welding (ERW) Process

Pipe is created using the Electric Resistance Welding (ERW) process by cold-forming a flat steel sheet into a cylindrical shape. The steel is then heated to a degree at which the edges of the steel cylinder are pressed together to establish a bond without the use of welding filler material.
Several Electric Resistance Welding (ERW) processes are available for pipe production. The two main types of ERW are:
. High Frequency Welding
. Rotary Contact Wheel Welding.

High Frequency Welding

In high frequency induction welding, a work coil is placed in front of the weld spot and acts as a conduit for the weld current to reach the material. Work coil does not come into contact with pipe. Through the magnetic fields that surround the pipe, an electrical current is induced into the pipe's substance. When changing pipe size, high frequency induction welding avoids contact marks and requires less setup time.

Rotary Contact Wheel Welding

The electrical current is passed through a contact wheel at the weld spot in rotary contact wheel welding. A portion of the forge pressure required for the welding process is also applied by the contact wheel. AC, DC, and square wave are the three primary types of rotary contact wheel welders. Electrical current is transferred in all three power supplies by brush assemblies that interact with slip rings attached to a revolving shaft that holds the contact wheels. The current is sent to the strip edges through these contact wheels.

Submerged Arc Welding (SAW) Process

A constantly fed bare wire electrode and the workpiece form an arc during the submerged arc welding (SAW) process. To produce protective gases, slag, and to add alloying components to the weld pool, the procedure requires a flux. Using a shielding gas is not necessary. Excess flux is recycled via a hopper as the arc advances along the joint line. After welding, any remaining layers of fused slag are simple to remove. The arc is generally invisible during welding because the flux layer totally covers it, and heat loss is also very minimal. In contrast to the manual metal arc's 25% thermal efficiency, this one can reach 60%.
There are two types of Submerged Arc Welding (SAW) processes:
. Longitudinal Submerged Arc Welding (LSAW) Process
. Spiral Submerged Arc Welding (SSAW) Process