Section 15 Base metals and articles of base metal 73 Articles of iron or steel 73 05 Other circular tubes and pipes, diameter >406.4mm, of iron or steel 73 05 39 High-pressure pipe with a yield strength not less than 42,000 psi 73 05 39 10 High-pressure pipe with a yield strength not less than 42,000 psi Commodity Code Description 73 05 39 10 00 High-pressure pipe with a yield strength not less than 42,000 psi