Incoloy 800 / 800H / 800HT Welded Pipe

Incoloy 800 / 800H / 800HT Welded Pipe Manufacturer, Supplier in India

Incoloy 800 / 800H / 800HT Welded Pipe is a piping material that offers excellent resistance to high-temperature and corrosive environments. It belongs to the Incoloy family of alloys, which are nickel-iron-chromium alloys renowned for their exceptional performance in demanding conditions. The main characteristic of Incoloy 800 / 800H / 800HT Welded Pipe is its high creep rupture strength, enabling it to withstand elevated temperatures up to 1100°C (2000°F) without significant deformation or failure. Additionally, this welded pipe exhibits remarkable resistance to oxidation, carburization, and sulfidation, making it suitable for applications involving furnace components, heat exchangers, petrochemical processing, and various thermal processing operations.

What are the common applications of Incoloy 800 / 800H / 800HT Welded Pipe in various industries?

Incoloy 800 Welded Pipe finds wide-ranging applications across various industries due to its exceptional heat and corrosion resistance properties. In the chemical industry, it is commonly used to construct reactor vessels, piping systems, and heat exchangers for handling corrosive chemicals and acidic environments. In the power generation sector, Incoloy 800 Welded Pipe is utilized in gas turbine components, steam generators, and boiler systems where it can withstand high temperatures and resist oxidation.

Incoloy 800H Welded Pipe is widely utilized in various industries due to the unique properties that make it suitable for specific applications. In the chemical processing industry, it is commonly used in reactors, distillation columns, and piping systems, providing excellent corrosion resistance from acids, alkalis, and other corrosive media. The high-temperature strength and stability of Incoloy 800H Welded Pipe make it an ideal choice for applications in the power generation sector, including steam generators, boiler tubes, and superheaters.

Incoloy 800HT Welded Pipe is widely employed across diverse industries due to its exceptional high-temperature strength and resistance to oxidation, carburization, and sulfidation. In the petrochemical industry, it is commonly used in ethylene-cracking furnaces, catalytic regenerators, and transfer lines where it can withstand high temperatures and corrosive environments. The power generation sector extensively utilizes Incoloy 800HT Welded Pipe in superheater and reheater tubing, steam reforming units, and heat exchangers, offering excellent thermal fatigue and oxidation resistance.

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