7302철강으로 만든 철도용이나 궤도용 선로의 건설재료[레일(rail)ㆍ첵레일(check-rail)과 랙레일(rack rail)ㆍ스위치 블레이드(switch blade)ㆍ교차구류(crossing frog)ㆍ전철봉(point rod)과 그 밖의 크로싱피스(crossing piece)ㆍ받침목(크로스타이)ㆍ이음매판(fish-plate)ㆍ좌철(座鐵)ㆍ좌철(座鐵)쐐기ㆍ밑판(sole plate)(베이스플레이트)ㆍ레일클립ㆍ받침판(bedplate)ㆍ격재(tie)와 레일의 접속이나 고착에 전용되는 그 밖의 재료로 한정한다]

Railway or tramway track construction material of iron or steel, the following; rails, check-rails and rack rails, switch blades, crossing frogs, point rods and other crossing pieces, sleepers (cross-ties), fish-plates, chairs, chair-wedges, sole plates (base plates), rail clips, bedplates, ties and other material specialized for jointing or fixing rails