... welding, girth welding, argon arc welding, brazing.5. Material: stainless steel, Iron (SPCC, SECC, SPTE, tinplate), aluminum alloy, red ... brass, bronze alloy, etc. 6. Surface treatment: professional stainless steel polishing, grinding and sand blasting by own workshop. Coating ... ) are also workable.7. Applied software for specification drawings: Pro / E, Solid Work 2001, Auto CAD, CAXA, UG ...