Abstract
Experimental study on the influence of welding joints thickness on the decrease in residual stresses (RS) under electrohydropulse treatment (EHPT) has been conducted. Diagrams have been plotted for the RS distributions in the joints thickness. They can be used for testing the reduction in RS in thick-walled welding joints, for exampel, when it is impossible to apply EHPT for processing inner surfac- es of pipelines with little cross sections.