BORONIZED LAYING PIPE

摘要

A laying pipe (28) for use in the laying head of a rolling mill is configured for rotation about an axis, with an entry end aligned on that axis to receive a hot rolled product (P), and with a curved section leading to a delivery end spaced radially from that axis. The curved section defines a guide path configured to form the hot rolled product (P) into a helical formation of rings. The laying pipe (28) comprises a tubular metal wall (34) having an exterior surface and an interior surface against which the hot rolled product (P) is confined for movement along the guide path. At least one of the interior and exterior surfaces of the tubular metal wall (34) comprises a wear resistant boronized layer (36).