Special Materials and Related Equipment
Composite structures, other than those specified in 1A002, in the form of thin-walled tubes and having all of the following characteristics: a. An inside diameter of between 75 mm and 650 mm; b. A thickness of 12 mm or less; and c. Made with any of the "fibrous or filamentary materials" specified in 1C010.a. or b. or 1C210.a. or with carbon prepreg materials specified in 1C210.c.