1. Carbon steel casing
Carbon steel casing is the most commonly used material in the petroleum industry. It has the advantages of being cheap, easy to process, and corrosion-resistant. However, its strength and corrosion resistance are slightly insufficient in high-temperature and high-pressure environments.
2. Alloy steel casing
Alloy steel casing has the advantages of high strength, corrosion resistance, and good high temperature and high-pressure performance, and is widely used in the production and development of oil and gas wells. Commonly used alloy steels include Cr-Mo alloy steel, Ni-Cr-Mo alloy steel, etc.
3. Stainless steel casing
Stainless steel casing has the advantages of corrosion resistance and high-temperature resistance and is widely used in marine development and other fields. Commonly used stainless steel materials include 304, 316, 321, etc.
4. Titanium alloy casing
Titanium alloy casing has the characteristics of low density, high strength, good corrosion resistance, and good high-temperature performance, making it an ideal substitute. However, due to its high cost, its application range is limited.

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