1.stainless steel&galvanizing. 2.:Bruce anchor, Plow anchor ,Wing anchor ,Fluck anchor. 3. ... marine anchor,tubing anchors 1..Anchor material:316 stainless steel& galvanizing.2..Anchor style :Bruce anchor, Plow anchor ,Wing anchor ,Fluck ... , x-ray,metallograph.Quality control: According to ISO 9001 2001 Galvanizing Marine Anchors,wedge anchor zinc plated