Tubes and pipes, having circular cross-sections and an external diameter of > 406,4 mm, of flat-rolled products of iron or steel 'e.g., welded, riveted or similarly closed'
Druge cevi (varjene, kovičene ali zaprte na podoben način), s krožnim prečnim prerezom, katerega zunanji premer presega 406,4 mm, iz železa ali jekla