|   4 Popular Types Of Welding Procedures Taught In Welder Trade Schools
 Welding refers to the process of joining two or more metals (or thermoplastics) using high heat or pressure. |  | 
|   4 Popular Types Of Welding Procedures Taught In Welder Trade Schools
 Welding refers to the process of joining two or more metals (or thermoplastics) using high heat or pressure. |  | 
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