structures and parts of struc
containers for compressed or
equipment for scaffolding, sh
bridges and bridge sections o
pipe or tube fittings, nesoi,
tanks, drums, cans, and simil
pipe or tube fittings, cast,
tubes, pipes and hollow profi
pipe or tube fittings, nesoi,
pipes, tubes and hollow profi
cans, plain, unfitted, of a c
reservoirs, tanks, casks, vat
tubes, pipes and hollow profi
pipes and tubes nesoi, extern
doors, windows and frames and
pipe or tube fittings, nesoi,
pipe or tube fittings, nesoi,
pipe or tube fittings, cast,
pipes, tubes and hollow profi
tubes, pipes and hollow profi
tanks, casks, drums, cans, bo
pipe or tube fittings, nesoi,
tubes, pipes and hollow profi
pipes, tubes and hollow profi
towers and lattice masts of i
tubes, pipes and hollow profi
pipe or tube fittings, nesoi,
pipe or tube fittings, nesoi,
pipes, tubes and hollow profi
tubes, pipes and hollow profi
tubes, pipes and hollow profi
line pipe for oil or gas pipe
pipes and tubes nesoi, extern
line pipe for oil and gas pip
tubes, pipes and hollow profi
tubes, pipes and hollow profi
line pipe for oil or gas pipe
line pipe for oil or gas pipe
pipe or tube fittings, nesoi,
line pipe for oil and gas pip
pipes and tubes nesoi, extern
tubes, pipes and hollow profi
line pipe for oil or gas pipe
casing and tubing of a kind u
casing or tubing for oil or g
drill pipe of a kind used in