Pipes resistant to hydrosulfuric acid

Details Pipes resistant to hydrosulfuric acid Pipes resistant to hydrosulfuric acid

C - Chemistry, Metallurgy

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C

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C22C 38/00 (2006.01) C21D 8/10 (2006.01) E21B 17/00 (2006.01) F16L 9/02 (2006.01)

Patent

CA 1220651

ABSTRACT TITLE: "PIPES RESISTANT TO HYDROSULPHURIC ACID" High-strength pipes are manufactured from cold-deformed carbon steel or alloyed steel for use in acid environment, in which the H2S partial pressure in gaseous phase may exceed 300 Pa or in which the H2S content in liquid phase may have a corresponding equilibrium pressure and/or in which C02 and other acidifying substances may be present. the weight % composition of the steel is preferably: C 0 - 1.20 % Si 0 - 1.0 % Mn 0 - 3.0 % Cr 0 - 2.0 % Ni 0 - 1.0 % Mo 0 - 1.0 % Cu 0 - 1.0 % V 0 - 0.3 % Nb 0 - 0.2 % Ca 0 - 0.05 % Fe + incidental ingredients and impurities up to 100% .

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