Fire proof, anti-skid and anti-corrosion steel springboard for special building - Jingfei steel springboard Manufacturer's specification Hot dip galvanized steel springboard has fire resistance, sand prevention, light weight, corrosion resistance, alkali resistance and high compressive strength, concave and convex holes on the surface, I-shaped drawing effect on both sides is particularly obvious than similar products, with regular hole spacing, forming standard, and floating shape