What is another name for fusion welding?

Although it's called fusion welding in technical books, on construction sites, in workshops, or among experienced workers, it has many more down-to-earth names.

Depending on the application and heating method, you can match these names accordingly:

⇁ The most common terms in the industry

If you're looking for this type of technology or equipment, you'll usually hear these terms:
Heat Fusion: This is the most commonly used term in the plastic pipe industry (such as PE pipes, PPR pipes). Workers often say "do a heat fusion," referring to using Butt Fusion Welding Machines to melt and join the pipe ends together.
Fusion Welding: This is the most direct Chinese equivalent, emphasizing the connection achieved by "melting" the base material.
Electric Welding: In the metal processing field, since most fusion welding is electrically driven (such as arc welding), people habitually refer to all fusion welding operations as "electric welding."

⇁ Nicknames based on the specific "heat source"

Workers often name it based on the tools they are using:
Burning Welding: This is a very common colloquial term in southern China and Hong Kong/Macau/Taiwan, vividly describing the process of "burning" the material with high temperature.
Gas Welding / Flame Welding: If the flame produced by oxygen and acetylene is used to melt the metal, this is what people will call it.
Butt Welding: This specifically refers to the working method of Butt Fusion Welding Machines – placing two end faces horizontally against each other and "butting" them together after melting.

⇁ Specific terms in different fields

In specific construction environments, to differentiate the processes, there are also these names:
Seamless Connection: When laying high-speed rail tracks or large pressure pipelines, because fusion welding allows two parts to become one without any gaps, technicians sometimes refer to it as "seamless processing."
Hydraulic Welding: When operating large butt welding equipment, because a hydraulic system is needed to provide the extrusion force, on-site workers sometimes simply call it "hydraulic welding."
Coalescence: This is a more formal term, usually appearing in technical specifications or drawing requirements.