... , passivation+oil, chromium-free, passivation+ oilCapacity300,000 MT/yearApplication General, DQ, DDQ Better adhesion and welding performance .. Structural purposeGood corrosion resistance ... and machinability. Type of material DQ or Structural Grade DX51D+Z, DX51DDX52D+Z, DX52DDX53D+Z, DX53DDX54D ...