Material:carbon steel,stianless steel(304/316),copper,brass etc. Surface:plain,black,zinc palted (Cr+3/Cr+6),dacromet etc. P material:mild steel,carbon steel,ss304,ss316standard:DIN,BS,ANSI,ISO,GBFINISH:plain,black,zinc plated,H.D.G,Cr3+zincpacking:ctn/pallet special clamp