HTS Number	Description	Unit of Quantity	General Rate of Duty	Details
7304 3900.04	Having an outside diameter of 38.1 mm or more but less than 190.5 mm	kg	Free	More
7304 3900.06	Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm	kg	Free	More
7304 3900.08	Having an outside diameter exceeding 285.8 mm	kg	Free	More
7304 3900.16	Galvanized, having an outside diameter not exceeding 114.3 mm	kg	Free	More
7304 3900.20	Having an outside diameter less than 38.1 mm	kg	Free	More
7304 3900.24	Having a wall thickness less than 6.4 mm	kg	Free	More
7304 3900.28	Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm	kg	Free	More
7304 3900.32	Having a wall thickness exceeding 12.7 mm	kg	Free	More
7304 3900.36	Having a wall thickness less than 12.7 mm	kg	Free	More
7304 3900.40	Having a wall thickness of 12.7 mm or more but less than 19 mm	kg	Free	More
7304 3900.44	Having a wall thickness of 19 mm or more	kg	Free	More
7304 3900.48	Having a wall thickness less than 12.7 mm	kg	Free	More
7304 3900.52	Having a wall thickness of 12.7 mm or more but less than 19 mm	kg	Free	More
7304 3900.56	Having a wall thickness of 19 mm or more	kg	Free	More
7304 3900.62	Having a wall thickness less than 12.7 mm	kg	Free	More
7304 3900.68	Having a wall thickness of 12.7 mm or more but less than 19 mm	kg	Free	More
7304 3900.72	Having a wall thickness of 19 mm or more	kg	Free	More
7304 3900.76	Having a wall thickness less than 19 mm	kg	Free	More
7304 3900.80	Having a wall thickness of 19 mm or more	kg	Free	More
7304 41	Cold-drawn or cold-rolled (cold-reduced):