Detailed tariff information for Oil country pipe and tube goods, provided for in subheading 7304.23.30, 7304.23.60, 7304.29.10, 7304.29.20, 7304.29.31, 7304.29.41, 7304.29.50, 7304.29.61, 7305.20.20, 7305.20.40, 7305.20.60, 7305.20.80, 7306.29.10, 7306.29.20, 7306.29.31, 7306.29.41, 7306.29.60 or 7306.29.81 imports
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