HSN Code 730520 - Casing of a kind used in drilling for oil or gas

HSN Code (Classification)
Description
73(Chapter)Articles of iron or steel
7305(Heading)Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross-sections, the external diameter of which exceeds 406.4 mm, of iron or steel
730520(Sub-Heading)
Casing of a kind used in drilling for oil or gas :