a back weld a - arcweld: welding equipment and … typical... · title: typical weld joints,...
TRANSCRIPT
WC-475
RRA
RA
A
A
A
BACK WELD
A
A
A
BACK WELD
A
A
A
TRANSCRIPT
WC-475
RRA
RA
A
A
A
BACK WELD
A
A
A
BACK WELD
A
A
A