Abstract: A laying head tripper has a ramp with a lip detachably secured to its forward edge. The ramp and/or the lip are contoured to match the curvature of the rings being formed by the laying head.

Abstract: A laying head tripper has a ramp with a lip detachably secured to its forward edge. The ramp and/or the lip are contoured to match the curvature of the rings being formed by the laying head.

Abstract: A laying pipe configured for rotation about its axis in a rolling mill laying head, comprises a metal outer tube having an entry section aligned with its axis, an intermediate section curving away from its axis, and a delivery section having a constant radius measured from its axis. A metal inner tube has entry, intermediate and delivery sections respectively lining the entry, intermediate and delivery sections of the outer tube. The inner tube is constrained against movement relative to the outer tube solely by frictional contact with the outer tube. The inner tube is movable incrementally within the outer tube in one direction in response to heating and cooling cycles during rotation of the laying pipe about its axis.

Abstract: A laying pipe configured for rotation about its axis in a rolling mill laying head, comprises a metal outer tube haying an entry section aligned with its axis, an intermediate section curving away from its axis, and a delivery section having a constant radius measured from its axis. A metal inner tube has entry, intermediate and delivery sections respectively lining the entry, intermediate and delivery sections of the outer tube. The inner tube is constrained against movement relative to the outer tube solely by frictional contact with the outer tube. The inner tube is movable incrementally within the outer tube in one direction in response to heating and cooling cycles during rotation of the laying pipe about its axis.

Abstract: A laying pipe 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, 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 into a helical formation of rings. The laying pipe comprises a tubular ferrous wall having an interior surface comprising a wear resistant boronized layer against which the hot rolled product is confined for movement along the guide path.

Abstract: A laying pipe configured for rotation about its axis in a rolling mill laying head, comprises a ferrous outer tube having an entry section aligned with its axis, an intermediate section curving away from its axis, and a delivery section having a constant radius measured from its axis. A ferrous inner tube has entry, intermediate and delivery sections respectively lining the entry, intermediate and delivery sections of the outer tube. The inner tube is constrained against movement relative to the outer tube solely by frictional contact with the outer tube. The inner tube is movable incrementally within the outer tube in one direction in response to heating and cooling cycles during rotation of the laying pipe about its axis.