1.Mild Steel (Low Carbon Steel) or Stainless Steel 2.treatment:Black, hot dipped galvanising, paint Material: Carbon steel or Stainless steelCharacteristics: High strength,high load bearing, light structure and convenience for lifting;durable,good properties of vantilation;light, heat elimination;explosion proof and anti skid.Assortment: Galvanized steel grating, hot galvanized grating, electric ...