... Anodizing, Black oxide or Plating colorFeatureslight weight, acid and alkali resistance, anti-corrosion, excellent mechanical strength etc.StandardDIN912 ... /7984/6921,ISO 7380,JIS,BSMOQ.50pieces Test and Quality1.ISO 9001:20082.Mechanical properties test.3 ... , etc.2.Aerospace,Indusrty,Navigation,Smelting,Chemical plants, and so on.Load portShanghai or TianjinPacking boxNon-wooden case, single board ...