Pinchers are defects which occurs during rolling the billet
or block to the wire or steel bar. Rolling fins, which were pressed in again during
the subsequently rolling process, are a cause for example. Strong grooves at the
semi finished products (billet) also can lead to pinchers, if they are pressed
together during rolling to the profile. The defect can occur locally or about the
complete rod wire length. Looked about the extent, the defect can be existing on
one side or also transposed by 180° .
12,00 mm round - untreated