Abstract: A method of forming an Al—Zn—Si—Mg alloy coating on a steel strip includes dipping steel strip into a bath of molten Al—Zn—Si—Mg alloy and forming a coating of the alloy on exposed surfaces of the steel strip. The method also includes controlling conditions in the molten coating bath and downstream of the coating bath so that there is a uniform Al/Zn ratio across the surface of the coating formed on the steel strip. An Al—Zn—Mg—Si coated steel strip includes a uniform Al/Zn ratio on the surface or the outermost 1-2 ?m of the Al—Zn—Si—Mg alloy coating.

Abstract: A liner setting tool. A system for conveying a liner string into a subterranean well includes a liner setting tool which selectively connects and disconnects a work string and a liner string. The liner setting tool is configured to transmit compressive force, tensile force and torque between the work string and the liner string. In another system, the liner setting tool is operable to disconnect the work string from the liner string in response to a predetermined pressure differential applied to the liner setting tool. In yet another system, the liner setting tool is operable to disconnect the work string from the liner string in response to displacement of a release member of the liner setting tool followed by displacement of the work string relative to the liner string.