美国海关
编码查询

- 15 Base Metals and Articles of Base Metal

- 73 Articles of iron or steel

- （无子目描述）

- （无子目描述）

- 7301 Sheet piling of iron or steel, whether or not drilled, punched or made from assembled elements; welded angles, shapes and sections, of iron or steel:

- （无子目描述）

- 730120 Angles, shapes and sections:

- 7302 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:

- （无子目描述）

- 730210 Rails:

- 730290 Other: