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Which of the following metals is/are used for petroleum well valves and wellhead parts?

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in Corrosion Engineering by (98.5k points)
Which of the following metals is/are used for petroleum well valves and wellhead parts?

(a) Straight chromium stainless steels and stellite

(b) Monel and copper-based alloys

(c) Monel, straight chromium steels, stellite, and copper-based alloys

(d) Monel and stellite

I have been asked this question in my homework.

This interesting question is from Environments topic in chapter Other Environments of Corrosion Engineering

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The correct choice is (c) Monel, straight chromium steels, stellite, and copper-based alloys

The best I can explain: Metals that are usually used for petroleum well valves and wellhead parts are straight chromium stainless steels, stellite, monel, and copper-based alloys.

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