Associação Nacional de Engenheiros de Corrosão (NACE), created by 11 anti-corrosion engineers from industrial ducts in 1943, and at the time, is the largest organization for the dissemination of anti-corrosion knowledge to improve their corrosion prevention skills .


MR0175/ISO 15156 was born with the purpose of establishing rules, suggestions and requirements to select quality materials, which are used in equipment used in the production of oil and gas, and non-natural gas sweening plants in H2S. Where these devices could not trace a risk for human health and safety, and damage to the environment.
In NACE standards, MR0175 is the standard of material needs for the H2S containing oil and gas production and carbon-carbon equipment, tubes and accessories of material used in the oil industry, generally, contain less carbon of 0.8 percent.
As a result, Nace tube is used in H2S containing gas and oil transport league of choice, it is the only web-based software for the selection of active oil and gas materials and was developed by the team of specialists in Petroleum & Gas Corrosion .
Carbon and low-grade years include plate, tube, tube fitting in accordance with NACE MR0175, express exceptions, plus SSC (or test is not required). However, any SSC test that is part of two specific manufacturing materials must be carried out with success and the results presented.
The carbon and alloy, tubes and accessories described above listed NACE MR0175 (all versions) forms identified by extensive correlations of performance errors / events and laboratory data.
The hardness limit of CDH 22 applied to more carbon and low-grade alloys was based on correlations of heat treatment, chemical composition, hardness and lack of experience. Higher hardness limits for chrome-molybdenum alloys are based on similar considerations.
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