Process of Welding Metal Small 277×320 Medium 554×640 Large 886×1024 Download Tiff Original 2076×2400 | (785.0 KB) Description To join multiple metals by applying heat, sometimes with pressure or with an intermediate or filler metal having a high melting point. Keywords butt welding, butt-welding, fastening, process of welding, spot welding, spot-welding, welding, welding metal Galleries Machines Parts Source: Government Printing Office Official Gazette (Washingon, DC: Government Printing Office, 1912)