... hollow tubular rivets 1,material: steel 2.finished:plain,zinc/nickle plated 3.pass:ISO9001:2008 4.high quality ... steel,Carbon steel, Aluminum, Iron Surface treatment Zinc coated(white ,black ),Nickle coated,Gold coated,Chrome coated etc. rivets workshop: 1.For computer ... , alloys,mild steel,middle carbon steel3. Finish: plain,black,zinc/nickel plated and so on , according to customers' requirement4. ...