underframe

Arc welding is a welding process that is used to join metal to metal by using electricity to create enough heat to melt metal, and the melted metals, after cooling, result in a binding of the metals.

The illustrated thick steel plates were cut by flame/plasma/laser cutting machine, and then welded by CO2 welding process.  After welding, we can further add the post-treatment by the CNC machining process, such as the hole drilling, the surface milling, etc.

these thick steel mount usually used for heavy duty parts.if the welding lines are much,then we need to annealing to relief the stress.