|The products covered by this investigation are welded carbon steel standard pipe and tube products with an outside diameter of 0.375 inch or more but not over 16 inches of any wall thickness, and are currently classified under the following Harmonized Tariff Schedule of the United States (HTSUS) subheadings: 7306.30.10.00, 7306.30.50.25, 7306.30.50.32, 7306.30.50.40, 7306.30.50.55, 7306.30.50.85, and 7306.30.50.90. Although the HTSUS subheading is provided for convenience and customs purposes, the written description of the merchandise under investigation is dispositive. These products, commonly referred to in the industry as standard pipe or tube, are produced to various ASTM specifications, most notably A-120, A-53 or A-135.|
51 FR 17784 (May 15, 1986)
Note that HTSUS numbers are subject to change.