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Harmonized Tariff Schedule (2025 HTS Revision 10 (04/14/2025))

Heading	Duty(general)	Duty(china)	Article Description	Compare Code
7304.59.20	Free	The duty provided in the applicable subheading + 7.5%	Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters	--
7304.59.20.30	Free	The duty provided in the applicable subheading + 7.5%	Of heat-resisting steel Other:	vs-73045920
7304.59.20.40	Free	The duty provided in the applicable subheading + 7.5%	Having an outside diameter less than 38.1 mm	vs-7304592030
7304.59.20.45	Free	The duty provided in the applicable subheading + 7.5%	Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm	vs-7304592040
7304.59.20.55	Free	The duty provided in the applicable subheading + 7.5%	Having an outside diameter exceeding 114.3 mm but less than 190.5 mm	vs-7304592045
7304.59.20.60	Free	The duty provided in the applicable subheading + 7.5%	Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm	vs-7304592055
7304.59.20.70	Free	The duty provided in the applicable subheading + 7.5%	Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm	vs-7304592060
7304.59.20.80	Free	The duty provided in the applicable subheading + 7.5%	Having an outside diameter exceeding 406.4 mm Other:	vs-7304592070