What is Welding? Clearly Introducing Common Welding Methods

--An Essential Guide to TIG, MIG, and Submerged Arc Welding (SAW)

Learn the fundamentals of industrial welding. This guide clearly explains common methods like TIG, MIG, and SAW used in pipelines and pressure vessels.

Welding is a process that uses heat, pressure, or a combination of both to create atomic bonds between metal materials. Unlike mechanical joining, welding achieves seamless integration at the molecular level, making it irreplaceable in the manufacture of pipelines, structural components, and pressure vessels.

Common Welding Methods in Industry

1.      Tungsten Inert Gas Welding (GTAW/TIG)

A tungsten electrode is used, and an inert gas (such as argon) shields the weld pool. Filler metal may or may not be added.

It offers high weld quality and beautiful welds, making it suitable for precision welding of stainless steel, nickel alloys, and other materials.

It is also suitable for applications requiring stringent welding quality, such as aerospace, food, and pharmaceuticals.

2.      Metal Gas Metal Welding (GMAW/MIG)

A continuously fed wire is used as the electrode, and an inert or reactive gas mixture shields the weld pool.

It offers high welding efficiency, ease of operation, and the ability to automate welding.

It is suitable for high-volume production applications, such as oil and gas pipelines and shipbuilding. 3. Submerged Arc Welding (SAW)

The wire burns beneath a layer of granular flux, which provides protection, deoxidation, and arc stabilization.

The high welding current and deep penetration make it suitable for welding thick-walled components.

It is also suitable for large steel structures and pressure vessel fabrication.

MTSCO: From Welding to Full Metal Solutions

As a stainless steel systems supplier based on a "clusters of factories" model, MTSCO boasts a complete production system for welded pipe, butt-weld fittings, and flanges. International certifications such as ISO, PED, and NORSOK M-650 ensure the traceability and reliability of every weld. MTSCO, with its "From Pipe to the Periodic Table" philosophy, provides reliable stainless steel welding solutions to global industries.