National Oilwell Varco, L.p.

Ameron, Inc.

Gregory A Hart

William A Muller

Gabriel M Badea

Josiah Morgan

Michael G Grabowski

Truett Tyler

A method, process, system, and apparatus for straightening of thin tubular shapes. A method of straightening of thin tubular shapes includes: supporting a tubular product between a plurality of first support members and a plurality of second support members of a bending apparatus; applying loads to the tubular product at respective locations along a length of the tubular product using a plurality of actuators of the bending apparatus; and using a recipe-based program to calculate the loads at the respective locations and control the plurality of actuators to apply the loads.

Method and process, system, and apparatus for straightening of thin tubular shapes

A welded tapered tube is made by deforming a flat, elongated trapezoidal sheet of metal into an elongated, U-shaped trough in a wagon open at its top and having a U-shaped trough for a bottom. The wagon moves along a track to carry the U-shaped sheet past a series of fin rolls, which deform the U-shaped sheet into an oval-shaped, tapered tube with a seam running the length of the tube. The wagon and tube thereafter move past a welding station where the seam is forged and welded together to form an elongated, tapered tube with an oval-shaped cross section, which may be squeezed between two elongated and semicircular die cavities to form a tapered tube of circular cross section.

Method and apparatus for making welded tapered tubes

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Hayward, CA, United States of America

Gregory A Hart