... steel 4.No burr, no scratch Item:metal pressed parts,Description:1. Material:any metal such as stainless steel, carbon steel AL, AL ... -nag, Alloy. copper alloy ,Q235 steel, HRB335,402,202 steel or as ... , chrome plating, zinc plating, mirror polished, silk printing, or as your special requirement;4. Equipment: cutting machine, welding machine, bore ...