... cutting, welding and UT report by DNVMaterials: steel, stainless steel ,aluminum alloy,brass, bronze,copper, according to ... customers' drawings or samples.3).Materials: Stainless steel ,cold work steel ,spring steel ,aluminum alloy,brass, bronze,copper, plastic , ... steel 304Mateial GradeGB,ASTM,AISI,DIN,BS,JISProcessingCNC TurningTolerance:0.01mmSurface RoughnessRa01.6SoftwarePro/E,Auto CAD,Solid work ...