... or Samples 4,ISO,MTC metal cnc machining partsWe can produce various of metal parts exactly according to customers’ ... turning, milling, drilling and punchingTechnics: machining, casting, forging, welding, surface treatmentSpecifications of machining parts:1, Material: carbon steel, alloy ... 3, Standard: according to the dimension tolerance of machining of customers’ requirement.4, Surface roughness: Ra0. ...