A weld that looks clean is not the same as a weld that passes. Visual inspection, penetrant testing and ultrasonic testing each catch a different class of defect, and knowing which one a job calls for saves rework later.
A weld that looks clean is not the same as a weld that passes. Visual inspection, penetrant testing and ultrasonic testing each catch a different class of defect, and knowing which one a job calls for saves rework later.