7306 Tubes, pipes and hollow profiles `e.g., open seam or welded, riveted or similarly closed`, of iron or steel (excl. of cast iron, seamless tubes and pipes and tubes having internal and external circular cross-sections and an external diameter of > 406,4 mm)

7306 (01/1988-..) Tubes, pipes and hollow profiles `e.g., open seam or welded, riveted or similarly closed`, of iron or steel (excl. of cast iron, seamless tubes and pipes and tubes having internal and external circular cross-sections and an external diameter of > 406,4 mm) 73061011 (01/1988-12/2006) Line pipe of a kind used for oil or gas pipelines, of iron or steel, longitudinally welded, of an external diameter of <= 186,3 mm 73061019 (01/1988-12/2006) Line pipe of a kind used for oil or gas pipelines, of iron or steel, longitudinally welded, of an external diameter of > 168,3 mm but <= 406,4 mm, of iron or steel 73061090 (01/1988-12/2006) Line pipe of a kind used for oil or gas pipelines, of iron or steel, spirally welded, of an external diameter of <= 406,4 mm 73061100 (01/2022-..) Line pipe of a kind used for oil or gas pipelines, welded, of flat-rolled products of stainless steel, of an external diameter of <= 406,4 mm 73061110 (01/2007-12/2021) Line pipe of a kind used for oil or gas pipelines, longitudinally welded, of flat-rolled products of stainless steel, of an external diameter of <= 406,4 mm 73061190 (01/2007-12/2021) Line pipe of a kind used for oil or gas pipelines, spirally welded, of flat-rolled products of stainless steel, of an external diameter of <= 406,4 mm 73061900 (01/2022-..) Line pipe of a kind used for oil or gas pipelines, welded, of flat-rolled products of iron or steel, of an external diameter of <= 406,4 mm (excl. products of stainless steel or of cast iron) 73061910 (01/2008-12/2021) Line pipe of a kind used for oil or gas pipelines, longitudinally welded, of flat-rolled products of iron or steel (excl. products of stainless steel or of cast iron) 73061911 (01/2007-12/2007) Line pipe of a kind used for oil or gas pipelines, longitudinally welded, of flat-rolled products of iron or steel, of an external diameter of <= 168,3 mm (excl. products of stainless steel or of cast iron) 73061919 (01/2007-12/2007) Line pipe of a kind used for oil or gas pipelines, longitudinally welded, of flat-rolled products of iron or steel, of an external diameter of > 168,3 mm but <= 406,4 mm (excl. products of stainless steel or of cast iron) 73061990 (01/2007-12/2021) Line pipe of a kind used for oil or gas pipelines, spirally welded, of flat-rolled products of iron or steel, of an external diameter of <= 406,4 mm (excl. products of stainless steel or of cast iron) 73062000 (01/1988-12/2006) Casing and tubing of a kind used in drilling for oil or gas, of flat-rolled products of iron or steel, of an external diameter of <= 406,4 mm (excl. of cast iron and seamless tubes) 73062100 (01/2007-..) Casing and tubing of a kind used in drilling for oil or gas, welded, of flat-rolled products of stainless steel, of an external diameter of <= 406,4 mm 73062900 (01/2007-..) Casing and tubing of a kind used in drilling for oil or gas, welded, of flat-rolled products of iron or steel, of an external diameter of <= 406,4 mm (excl. products of stainless steel or of cast iron) 73063010 (01/1988-12/2005) Tubes, pipes and hollow profiles, welded, having a circular cross-section, of iron or non-alloy steel, with attached fittings, for gases or liquids, for civil aircraft (excl. of cast iron and seamless tubes) 73063011 (01/2006-12/2021) Precision tubes, welded, of circular cross-section, of iron or non-alloy steel, with a wall thickness of <= 2 mm 73063012 (01/2022-..) Precision tubes, welded, of circular cross-section, of iron or non-alloy steel, cold-drawn or cold-rolled `cold-reduced` 73063018 (01/2022-..) Precision tubes, welded, of circular cross-section, of iron or non-alloy steel (excl. cold-drawn or cold-rolled) 73063019 (01/2006-12/2021) Precision tubes, welded, of circular cross-section, of iron or non-alloy steel, with a wall thickness of > 2 mm 73063021 (01/1988-12/2005) Precision steel tubes, welded, having a circular cross-section, of iron or non-alloy steel, with a wall thickness of <= 2 mm 73063029 (01/1988-12/2005) Precision steel tubes, welded, having a circular cross-section, of iron or non-alloy steel, with a wall thickness of > 2 mm 73063030 (01/1988-12/1990) Electrical conduit tubes, welded, having a circular cross-section, of iron or non-alloy steel 73063041 (01/2006-..) Threaded or threadable tubes `gas pipe`, welded, of circular cross-section, of iron or non-alloy steel, plated or coated with zinc 73063049 (01/2006-..) Threaded or threadable tubes `gas pipe`, welded, of circular cross-section, of iron or non-alloy steel (excl. products plated or coated with zinc) 73063051 (01/1988-12/2005) Threaded or threadable tubes `gas pipe`, welded, having a circular cross-section, of iron or non-alloy steel, plated or coated with zinc 73063059 (01/1988-12/2005) Threaded or threadable tubes `gas pipe`, welded, having a circular cross-section, of iron or non-alloy steel (excl. products plated or coated with zinc) 73063071 (01/1988-12/2005) Other tubes, pipes and hollow profiles, welded, having a circular cross-section, of iron or non-alloy steel, of an external diameter of <= 168,3 mm, plated or coated with zinc (excl. products with attached fittings, for gases or liquids, for civil aircraft, or line pipe of a kind used for oil or gas pipelines or casing and tubingof a kind used in drilling for oil or gas) 73063072 (01/2006-..) Other tubes, pipes and hollow profiles, welded, of circular cross-section, of iron or non-alloy steel, of an external diameter of <= 168,3 mm, plated or coated with zinc (excl. line pipe of a kind used for oil or gas pipelines or casing and tubingof a kind used in drilling for oil or gas) 73063077 (01/2006-..) Other tubes, pipes and hollow profiles, welded, of circular cross-section, of iron or non-alloy steel of an external diameter of <= 168,3 mm (excl. plated or coated with zinc and line pipe of a kind used for oil or gas pipelines, casing and tubing of a kind used in drilling for oil or gas, precision tubes and threaded or threadable tubes `gas pipe`) 73063078 (01/1991-12/2005) Other tubes, pipes and hollow profiles, welded, having a circular cross-section, of iron or non-alloy steel of an external diameter of <= 168,3 mm (excl. plated or coated with zinc, products with attached fittings, for gases or liquids, for civil aircraft, and line pipe of a kind used for oil or gas pipelines, casing and tubing of a kind used in drilling for oil or gas, precision tubes and threaded or threadable tubes `gas pipe`) 73063079 (01/1988-12/1990) Other tubes, pipes and hollow profiles of iron or non-alloy steel, welded, having a circular cross-section of an external diameter of =< 168.3 mm (excl. products plated or coated with zinc or with attached fittings, for gases or liquids, for civil aircraft, products used for oil or gas pipelines or in drilling for oil or gas, precision steel tubes, electrical conduit tubes, threaded or threadable tubes 'gas pipe') 73063080 (01/2006-..) Tubes, pipes and hollow profiles, welded, having a circular cross-section, of iron or steel, of an external diameter of > 168,3 mm but <= 406,4 mm (excl. line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas, or precision steel tubes, electrical conduit tubes or threaded or threadable tubes `gas pipe`) 73063090 (01/1988-12/2005) Tubes, pipes and hollow profiles, welded, having a circular cross-section, of iron or steel, of an external diameter of > 168,3 mm but <= 406,4 mm (excl. seamless and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas, or precision steel tubes, electrical conduit tubes or threaded or threadable tubes `gas pipe`) 73064010 (01/1988-12/2005) Tubes, pipes and hollow profiles, welded, having a circular cross-section, of stainless steel, with attached fittings, for gases or liquids, for civil aircraft (excl. seamless) 73064020 (01/2006-..) Tubes, pipes and hollow profiles, welded, of circular cross-section, of stainless steel, cold-drawn or cold-rolled `cold-reduced` (excl. products having internal and external circular cross-sections and an external diameter of > 406,4 mm, and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas) 73064080 (01/2006-..) Tubes, pipes and hollow profiles, welded, of circular cross-section, of stainless steel (excl. products cold-drawn or cold-rolled `cold-reduced`, tubes and pipes having internal and external circular cross-sections and an external diameter of > 406,4 mm, and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas) 73064091 (01/1988-12/2005) Tubes, pipes and hollow profiles, welded, having a circular cross-section, of stainless steel, cold-drawn or cold-rolled `cold-reduced` (excl. seamless, products having internal and external circular cross-sections and an external diameter of > 406,4 mm, and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas) 73064099 (01/1988-12/2005) Tubes, pipes and hollow profiles, welded, having a circular cross-section, of stainless steel (excl. seamless, products cold-drawn or cold-rolled `cold-reduced`, tubes and pipes having internal and external circular cross-sections and an external diameter of > 406,4 mm, and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas) 73065010 (01/1988-12/2005) Tubes, pipes and hollow profiles, welded, having a circular cross-section, of alloy steel other than stainless, with attached fittings, for gases or liquids, for civil aircraft (excl. seamless) 73065020 (01/2006-12/2021) Precision steel tubes, welded, of circular cross-section, of alloy steel other than stainless 73065021 (01/2022-..) Precision steel tubes, welded, of circular cross-section, of alloy steel other than stainless, cold-drawn or cold-rolled `cold-reduced` 73065029 (01/2022-..) Precision steel tubes, welded, of circular cross-section, of alloy steel other than stainless (excl. cold-drawn or cold-rolled) 73065080 (01/2006-..) Tubes, pipes and hollow profiles, welded, of circular cross-section, of alloy steel other than stainless (excl. tubes and pipes having internal and external circular cross-sections and an external diameter of > 406,4 mm, and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas, and precision steel tubes) 73065091 (01/1988-12/2005) Precision steel tubes, welded, having a circular cross-section, of alloy steel other than stainless (excl. seamless) 73065099 (01/1988-12/2005) Tubes, pipes and hollow profiles, welded, having a circular cross-section, of alloy steel other than stainless (excl. seamless, tubes and pipes having internal and external circular cross-sections and an external diameter of > 406,4 mm, and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas, and precision steel tubes) 73066010 (01/1988-12/2005) Tubes, pipes and hollow profiles, welded, having a non-circular cross-section, of iron or steel, with attached fittings, for gases or liquids, for civil aircraft (excl. seamless) 73066011 (01/2006-12/2006) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of stainless steel, with a wall thickness of <= 2 mm (excl. seamless) 73066019 (01/2006-12/2006) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of iron or steel other than stainless steel, with a wall thickness of <= 2 mm (excl. seamless and of cast iron) 73066021 (01/2006-12/2006) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of stainless steel, with a wall thickness of > 2 mm (excl. seamless) 73066029 (01/2006-12/2006) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of iron or steel other than stainless steel, with a wall thickness of > 2 mm (excl. seamless) 73066031 (01/1988-12/2003) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of iron or steel, with a wall thickness of <= 2 mm (excl. seamless and of cast iron) 73066032 (01/2004-12/2005) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of stainless steel, with a wall thickness of <= 2 mm (excl. seamless) 73066034 (01/2004-12/2005) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of iron or steel other than stainless steel, with a wall thickness of <= 2 mm (excl. seamless and of cast iron) 73066036 (01/2004-12/2005) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of stainless steel, with a wall thickness of > 2 mm (excl. seamless) 73066038 (01/2004-12/2005) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of iron or steel other than stainless steel, with a wall thickness of > 2 mm (excl. seamless) 73066039 (01/1988-12/2003) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of iron or steel, with a wall thickness of > 2 mm (excl. seamless and of cast iron) 73066081 (01/2006-12/2006) Tubes, pipes and hollow profiles, welded, of non-circular cross-section, of stainless steel (excl. of cast iron, seamless, and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas, and tubes and pipes and hollow profiles of square or rectangular cross-section) 73066089 (01/2006-12/2006) Tubes, pipes and hollow profiles, welded, of non-circular cross-section, of iron or steel other than stainless steel (excl. of cast iron, seamless, and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas, and tubes and pipes and hollow profiles of square or rectangular cross-section) 73066090 (01/1988-12/2003) Tubes, pipes and hollow profiles, welded, of non-circular cross-section, of iron or steel (excl. of cast iron, seamless, and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas, and tubes and pipes and hollow profiles of square or rectangular cross-section) 73066091 (01/2004-12/2005) Tubes, pipes and hollow profiles, welded, of non-circular cross-section, of stainless steel (excl. of cast iron, seamless, and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas, and tubes and pipes and hollow profiles of square or rectangular cross-section) 73066099 (01/2004-12/2005) Tubes, pipes and hollow profiles, welded, of non-circular cross-section, of iron or steel other than stainless steel (excl. of cast iron, seamless, and line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas, and tubes and pipes and hollow profiles of square or rectangular cross-section) 73066110 (01/2008-..) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of stainless steel 73066111 (01/2007-12/2007) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of stainless steel, with a wall thickness of <= 2 mm 73066119 (01/2007-12/2007) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of iron or steel other than stainless steel, with a wall thickness of <= 2 mm 73066191 (01/2007-12/2007) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of stainless steel, with a wall thickness of > 2 mm 73066192 (01/2008-..) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of iron or steel other than stainless steel, with a wall thickness of <= 2 mm 73066199 (01/2007-..) Tubes and pipes and hollow profiles, welded, of square or rectangular cross-section, of iron or steel other than stainless steel, with a wall thickness of > 2 mm 73066910 (01/2007-..) Tubes, pipes and hollow profiles, welded, of non-circular cross-section, of stainless steel (excl. tubes and pipes having internal and external circular cross-sections and an external diameter of > 406,4 mm, line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas, and tubes and pipes and hollow profiles of square or rectangular cross-section) 73066990 (01/2007-..) Tubes, pipes and hollow profiles, welded, of non-circular cross-section, of iron or steel other than stainless steel (excl. tubes and pipes having internal and external circular cross-sections and an external diameter of > 406,4 mm, line pipe of a kind used for oil or gas pipelines or casing and tubing of a kind used in drilling for oil or gas, and tubes and pipes and hollow profiles of square or rectangular cross-section) 73069000 (01/1988-..) Tubes, pipes and hollow profiles `e.g., open seam, riveted or similarly closed`, of iron or steel (excl. of cast iron, seamless or welded tubes and pipes and tubes and pipes having internal and external circular cross-sections and an external diameter of > 406,4 mm)