Everything You Need to Know About Resistance Welding Machine Suppliers Resistance welding is a widely used welding technique in manufacturing, particularly in the automotive, aerospace, and electronics sectors. Resistance welding machines play a critical role in this process, and finding the right supplier is essential to ensure the success of your operations. In this document, we will cover everything you need to know about resistance welding machine suppliers. What is resistance welding? Resistance welding is a welding process that involves applying pressure and passing an electric current through the materials being joined, creating heat that melts the materials and fuses them together. This process is used to join metals, such as steel, aluminum, and copper, and is known for its speed, reliability, and consistency.