WELLHEAD STRUCTURE AND METHOD OF PRODUCING SAME

摘要

A wellhead structure having a body of a martensitic alloy with opening therein and a austenitic cladding lining the openings wherein the body, the cladding and the interface therebetween all have a strength of at least 75,000 psi and a ductility of at least ten percent. The method of producing a wellhead structure with an alloy steel body having openings therein and a corrosion resistant alloy cladding lining the openings including the steps of lining openings with the cladding by hot isostatic pressure process wherein the temperature does not exceed 2200.degree.F and the cycle is held at temperature for less than four hours.