Section 15 Base metals and articles of base metal 73 Articles of iron or steel 73 07 Tube or pipe fittings of iron or steel 73 07 99 Tube or pipe fittings of iron or steel (excl. stainless), nes Commodity Code Description 73 07 99 00 Tube or pipe fittings of iron or steel (excl. stainless), nes 73 07 99 10 Having an internal diameter of less than 15 cm 73 07 99 90 Other
