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Harmonized System
Section XV > Chapter 73 > Heading 7306
Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel.
Section XV > Chapter 73 > Heading 7306 > 7306.1
Line pipe of a kind used for oil or gas pipelines
Section XV > Chapter 73 > Heading 7306 > 7306.2
Casing and tubing of a kind used in drilling for oil or gas
Section XV > Chapter 73 > Heading 7306 > 7306.6
Other, welded, of non-circular cross-section
Section XV > Chapter 73 > Heading 7306 > 7306.1 > 7306.11
Welded, of stainless steel
Section XV > Chapter 73 > Heading 7306 > 7306.2 > 7306.21
Welded, of stainless steel
Section XV > Chapter 73 > Heading 7306 > 7306.30
Other, welded, of circular cross-section, of iron or non-alloy steel