... GB,DIN,UNC,JIS,BS,ISO4.)features:low density,corrosion resistance,high strength.5.) applications:Chemical industry, Medical field, ... , Black oxide or Plating colorFeatureslight weight, acid and alkali resistance, anti-corrosion, excellent mechanical strength etc.StandardDIN912/933/7991/ ... & Model No. Quantity Number of Year(s) Used Condition Resistance Furnace RX3-100-5 4 8.0 Good Press Machine JN23 ...