line pipe for oil or gas pipelines, external diameter over 4...
structures and parts of structures nesoi, of iron or steel
tubes, pipes and hollow profiles, seamless nesoi, of circula...
pipe or tube fittings, nesoi, iron or nonstainless steel fit...
reservoirs, tanks, casks, vats and similar containers nesoi,...
tubes, pipes and hollow profiles, seamless nesoi, of circula...
pipes, tubes and hollow profiles nesoi, welded, of circular ...
line pipe for oil and gas pipelines, of seamless iron (other...
equipment for scaffolding, shuttering propping or pit-proppi...
casing and tubing of a kind used in drilling for oil or gas,...
tanks, casks, drums, cans, boxes and similar plain, unfitted...
containers for compressed or liquefied gas, of iron or steel
drill pipe of a kind used in drilling for oil or gas, of iro...
pipe or tube fittings, nesoi, iron or nonstainless steel fla...
pipes, tubes and hollow profiles nesoi, welded, of circular ...
tanks, drums, cans, and similar plain containers, a capacity...
tubes, pipes and hollow profiles, seamless nesoi, of circula...
towers and lattice masts of iron or steel
pipes, tubes and hollow profiles nesoi, welded, of circular ...
tubes, pipes and hollow profiles, seamless nesoi, of circula...
tubes, pipes and hollow profiles, of iron or steel, welded, ...
pipe or tube fittings, nesoi, iron or nonstainless steel but...
pipe or tube fittings, nesoi, iron or nonstainless steel thr...
pipe or tube fittings, cast, of iron nesoi or steel
pipe or tube fittings, nesoi, stainless steel fittings nesoi
tubes, pipes and hollow profiles, seamless nesoi, of circula...
doors, windows and frames and thresholds for doors, of iron ...
tubes, pipes and hollow profiles, seamless nesoi, of circula...
tubes, pipes and hollow profiles of cast iron
casing & tubing used in drilling for oil or gas, other of st...
pipe or tube fittings, nesoi, stainless steel butt welding f...
pipe or tube fittings, nesoi, stainless steel flanges
casing or tubing for oil or gas drilling, of iron or steel, ...
pipes and tubes nesoi, external diameter over 406.4 mm (16 i...
tubes, pipes and hollow profiles, seamless nesoi, of iron (o...
cans, plain, unfitted, of a capacity of less than 50 liters ...
bridges and bridge sections of iron or steel
pipes, tubes and hollow profiles nesoi, of iron or steel, ri...
pipe or tube fittings, nesoi, stainless steel threaded elbow...
line pipe for oil or gas pipelines, of iron or steel, nesoi
line pipe for oil or gas pipelines, external diameter over 4...
tubes, pipes and hollow profiles, of iron or steel, welded, ...
pipe or tube fittings, cast, of nonmalleable iron
line pipe for oil or gas pipelines, external diameter over 4...
casing or tubing for oil or gas drilling, welded of stainles...
pipes and tubes nesoi, external diameter over 406.4 mm (16 i...
line pipe for oil and gas pipelines, of stainless steel
line pipe for oil or gas pipelines, welded, of stainless ste...
drill pipe of a kind used in drilling for oil or gas, of sta...
casing for oil or gas drilling, external diameter over 406.4...
pipes and tubes nesoi, external diameter over 406.4 mm (16 i...