Irons and steels; plated steels; sheet metal; stainless steels; films and sheets made from metal for use in the manufacture of circuit boards; stainless steel pipes; tubes of stainless steel; metal materials for building and construction, namely, pipes of metal, tubes of metal, sheets of metal and thick steel plates and sheets of metal; metal pipe couplings; metallic flanges; metal valves not being parts of machines; industrial packaging containers of metal; gas storage tanks of metal