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