... Steel, a luminium, Aluminium Alloy etc.7. Applied software for specification drawings: PRO/E, Auto CAD, Solid Works ... steel, copper, carbon steel (according to customer's requirement)Surface treatmentHot galvanized, polishing, chrome/zinc/nickel ... cutting,threading, welding, tapping, riveting, grindingSizeAccording to customer's designThickness0.5mm ~12mm, or other special availableStandardANSI. API ...