Structural steels, namely, reinforcing and prestressing steels in the form of rods; components of post-tensioning systems, namely, anchor plates made of metal, anchor bells made of metal, couplings made of metal, nuts made of metal; rock and soil anchors made of metal; rock bolts made of metal; components of reinforcing systems, namely, anchor plates made of metal, couplers made of metal, nuts made of metal, and extension bolts made of metal, all for construction purposes

structural steel bars used for reinforcing and pre-stressing of concrete, soil and rock or retrofitting of steel structures