... , iron, brass, copper, etc. Equipment: shearing machine, bending machine, CNC, bending presses plate cutting machine, welding machine, wire cutting machine, etc. Surface treatment: polishing, painting, oil painting ... 3 5.0 Acceptable Carbon and sulfur analyzer No information 1 1.0 Acceptable Metalloscope XJP-6A 1 1.0 Acceptable Universal testing machine ...