Back-up pad for welding

Backing tool for welding

Clamping ring attachable with split clamping means

Device for backing butt-welds between tubes

Device for supporting weld underbead

Expandable mandrel for use in friction stir welding

Flexible, adjustable welding backup mandrel

Magnetic plug weld tool

Movable backing system

Pivotal back-up pads for welding

Plug for kinetic bonding procedure

Seamer with improved back-up assembly

Self-running one-side welding facilities

Weld backing

Weld backup mechanism for internal pipe welding apparatus

Weld suporting ring for pipes

Weld tab

Welding apparatus

Welding back-up tape

Welding back-up tape