Mechanical tubing and other products, provided for in subheading 7304.31.30, 7304.31.60 (except for statistical reporting number 7304.31.6010), 7304.39.00 (except for statistical reporting numbers 7304.39.0002, 7304.39.0004, 7304.39.0006, 7304.39.0008, 7304.39.0016, 7304.39.0020, 7304.39.0024, 7304.39.0036, 7304.39.0048, 7304.39.0062, 7304.39.0076 and 7304.39.0080), 7304.51.10, 7304.51.50 (except for statistical reporting number 7304.51.5005, 7304.51.5015 and 7304.51.5045), 7304.59.10, 7304.59.60, 7304.59.80 (except for statistical reporting numbers 7304.59.8010, 7304.59.8015, 7304.59.8030, 7304.59.8045, 7304.59.8060 and 7304.59.8080), 7304.90.50, 7304.90.70, 7306.30.10, 7306.30.50 (except for statistical reporting numbers 7306.30.5010, 7306.30.5026, 7306.30.5027, 7306.30.5028, 7306.30.5031, 7306.30.5033, 7306.30.5041, 7306.30.5043, 7306.30.5056, 7306.30.5057, 7306.30.5085 and 7306.30.5090), 7306.50.10, 7306.50.50 (except for statistical reporting number 7306.50.5010), 7306.61.50, 7306.61.70 (except for statistical reporting number 7306.61.7030), 7306.69.50 or 7306.69.70 (except for statistical reporting number 7306.69.7030)

Except as provided in subheadings 9903.80.60 through 9903.80.62, iron or steel products of Argentina, of Brazil, or of South Korea enumerated in U.S. note 16(b) to this subchapter, if entered in aggregate quantities prescribed in subdivision (e) of such note for any calendar year starting on January 1, 2018 and for any portion thereof as prescribed in such subdivision (e): > Mechanical tubing and other products, provided for in subheading 7304.31.30, 7304.31.60 (except for statistical reporting number 7304.31.6010), 7304.39.00 (except for statistical reporting numbers 7304.39.0002, 7304.39.0004, 7304.39.0006, 7304.39.0008, 7304.39.0016, 7304.39.0020, 7304.39.0024, 7304.39.0036, 7304.39.0048, 7304.39.0062, 7304.39.0076 and 7304.39.0080), 7304.51.10, 7304.51.50 (except for statistical reporting number 7304.51.5005, 7304.51.5015 and 7304.51.5045), 7304.59.10, 7304.59.60, 7304.59.80 (except for statistical reporting numbers 7304.59.8010, 7304.59.8015, 7304.59.8030, 7304.59.8045, 7304.59.8060 and 7304.59.8080), 7304.90.50, 7304.90.70, 7306.30.10, 7306.30.50 (except for statistical reporting numbers 7306.30.5010, 7306.30.5026, 7306.30.5027, 7306.30.5028, 7306.30.5031, 7306.30.5033, 7306.30.5041, 7306.30.5043, 7306.30.5056, 7306.30.5057, 7306.30.5085 and 7306.30.5090), 7306.50.10, 7306.50.50 (except for statistical reporting number 7306.50.5010), 7306.61.50, 7306.61.70 (except for statistical reporting number 7306.61.7030), 7306.69.50 or 7306.69.70 (except for statistical reporting number 7306.69.7030)