With the development of China's petroleum industry, galvanized steel pipes are increasingly used in oilfields for transporting crude oil. Therefore, the zinc coating undergoes a certain degree of corrosion in crude oil containing hydrogen sulfide and in aerated stratified water containing hydrogen sulfide. Hence, the corrosion resistance of galvanized steel pipes under oil production conditions is quite limited. However, it is also reported that in groundwater containing 240-400 mg/L of hydrogen sulfide near oil wells, the lifespan of galvanized steel pipes is 5 to 6 times longer than that of ungalvanized ones.

If galvanized steel pipes are annealed at a temperature of 500 to 550 degree for ten minutes, the pure zinc coating can be transformed into an iron-zinc alloy layer. This alloyed galvanized steel pipe exhibits significantly improved corrosion resistance compared to non-alloyed galvanized steel pipes.