Carbon steel stamping part with black oxide coating Machined and stamping SGS audited More than 20 years experience ... 1,Name: Carbon steel stamping part with black oxide coating;Carbon steel stamping part;Stamping part with balck oxide ... ,chrome(3+Rohs &6+ ) plated,anodic oxidation,etc Dip plating black oxide coating,hot dip galvanizing,etc Flame plating Light oil,spray ...