Pemamek LLC offers Semi-Narrow Gap Welding, an automated semi-narrow groove welding solution for welding thick plates ranging in size from 2 in. to 6.5 in. Based on submerged arc welding, the process uses less consumables over the length of the operation. It employs a welding head equipped with 5/32-in. wires. The tiltable head provides more control over the fusion process and weld bead creation for better accuracy and penetration. Full welds are possible from the root weld all the way through to the surface. For welding tubular structures, longitudinal and circular milling machines are used to mill the groove root.