3315  Steel Wiredrawing and Steel Nails and Spikes

Establishments primarily engaged in drawing wire from purchased iron or
steel rods, bars, or wire and which may be engaged in the further
manufacture of products made from wire; establishments primarily engaged in
manufacturing steel nails and spikes from purchased materials are also
included in this industry. Rolling mills engaged in the production of
ferrous wire from wire rods or hot-rolled bars produced in the same
establishment are classified in industry 3312.  Establishments primarily
engaged in drawing nonferrous wire are classified in industry group 335.