German Welding Technology !!

There are tons of different welding methods, and more are being invented all the time. Some methods use heat to essentially melt two pieces of metal together, often adding a "filler metal" into the joint to act as a binding agent.

Other methods rely on pressure to bind metal together, and still others use a combination of both heat and pressure. Unlike soldering and brazing, where the metal pieces being joined remain unaltered, the process of welding always changes the work pieces. This may seem like a trivial point, but it's actually critical to understanding why welding produces such strong bonds. In the processes of soldering and brazing, two pieces of metal are joined by introducing a third material (with a lower melting point) into the mix.

Melting this third material between the surfaces of the original pieces binds the pieces together. The bond, however, is only as strong as the joining material. Welding, on the other hand, cuts out the middleman and joins the original pieces directly to each other. The result is a strong, cohesive bond that's often as strong as the material itself.