can any one clarify my doubt?
AS PER ASME Section IX QW-452.1(b) for performance 13mm and over, with a minimum of three layers, no thickness limitation......but i have doubt in this .what is that three layer ?if it is root,fill,cap. then why we are exclude that cap and excess root...
HELLO I AM A NEW PERSON OF WELDING RELATED FIELD .SOMETHINGS I CONT UNDERSTAND .SO I HAVE FOLLOWING QUESTIONS PLEASE GUIDE ME
WHAT IS THE MEANING OF HOT PASS ?
THEIR IS SMALL AMOUNT OF HEAT ONLY IS THEIR IN LARGE DIAMETER PIPES AFTER COMPLETION OF THE ROOT PASS THEN HOW THE SECOND PASS IS...
