Oil and natural gas as an important indispensable energy in modern society which was transformed into carbon and oxygen compounds from the remains of animals and plants were sealed in the underground rock layer of both marine and land, so that they are very difficult to be developed. The mining equipment requires not only hydrocarbon compounds, sulfur, oxygen and nitrogen compounds spitting crevice and stress corrosion resistance in the crude oil and natural gas but also of which materials maintain high strength from room temperature to temperature below freezing point. The following corrosion resistant alloys provided by Ginner are efficient materials for the exploitation of petroleum and natural gas.