[ Common metals and their alloys for use in the drilling of oil wells, exploration, extraction and transportation of mineral materials, namely, oil and gas; Non-electric cables and wires of common metal; Ironmongery, namely, iron ores, iron scraps; Small items of metal hardware, namely, springs, nuts, washers, clamps, bolts, pipes and tubes of metal; Metal safes; Metal pipes, metal joints, namely, expansion joints for piping and ducting and manifolds; Metal connectors for pipes and flow syste...