Issues regarding material selection for hydrogen sulfide environments

2017-06-24 View Original

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“For pipelines in which the vapor pressure of H2S in the medium is greater than 0.002 MPa or the concentration in the liquid phase exceeds 50 ppm, special considerations regarding hydrogen sulfide are required. Could you please explain the principle behind this as well as the appropriate handling methods? Thank you

Reply #2 2017-07-02

1. Control of P\S content in pipeline material selection 2. Stress relief

Reply #3 2017-07-10

Anti-hydrogen assessment is conducted, and the welds are heat-treated.

Reply #4 2017-07-18

Customers have used nickel-based alloys such as GH4169/Inconel625; I’m just a steel mill that deals with nickel-based alloy materials

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Issues regarding material selection for hydrogen sulfide environments

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