... extrusion1. Alloy: 6063 T5/6061-T6 are available.2. Finishing process : cutting,lathing,milling,drilling,tapping,punching,CNC machining,Anodizing(natural ... 6. The condition of quatation. (1) the CAD drawings of product or send us for PDF file, if other formats, please ... specify product size, specifications, wall thickness. (2)the requirement of surface ...