apply liquid penetrant into the welded so that the liquid penetrat into the defect for non-destructive testing& x28;ndt& x29;

accessories aerosol apply architecture assembly brush closeup concept construction defect destructive equipment experience factory gloves hand industrial industry inspection inspector iron job liquid man material metal non non-destructive object orange penetrant penetrat penetration pipe process professional protection quality red repair safety skills solvent steel structure surface technical technology testing testingndt tools weld welded welder welding work