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 29 Seamless iron/steel casing or tubing (excl.drill pipe)of a kind used in oil/gas Commodity Code Description 73 04 29 00 Seamless iron/steel casing or tubing (excl.drill pipe)of a kind used in oil/gas 73 04 29 10 Casing and tubing with yield strength less than 80,000 psi, without threaded end 73 04 29 20 Casing and tubing with yield strength less than 80,000 psi, with threaded end 73 04 29 30 Casing and tubing with yield strength 80,000 psi or more, whether or not with thread 73 04 29 90 Other
