Section 15 Base metals and articles of base metal 73 Articles of iron or steel 73 04 Tubes, pipes and hollow profiles, seamless, of iron (excl. cast), steel 73 04 24 Casing and tubing with yield strength less than 80,000 psi, without threaded end Commodity Code Description 73 04 24 10 Casing and tubing with yield strength less than 80,000 psi, without threaded end 73 04 24 20 Casing and tubing with yield strength less than 80,000 psi, with threaded end 73 04 24 30 Casing and tubing with yield strength 80,000 psi or more, whether or not with threade 73 04 24 90 Other
