... ,Q3452.equipments: defectometer, gas cutting machine, plate-shearing machine, bender, drilling machine, lathe, arc-submerged welder, flaw defactor, glossing machine, galvanizing equipment, posiTest DFT3. process ... by defactometer----cut by plate-shearing machine----punching by drilling machine----turned bolt by lathe----welding by arc-submerged welder----testing by flaw ...