Hydrogen embrittlement of steel is defined as a deterioration in the mechanical properties of a metal due to stress corrosion cracking. This process typically begins with crack formation and progresses to fracture due to decreased ductility and increased brittleness. This undermines the reliability of these metals in industries such as automotive, oil and gas, and construction, which rely heavily on steel structures. This process has been studied in numerous scientific studies, but its understanding remains uneven. To address this problem, it is first necessary to understand the underlying mechanisms and factors affecting hydrogen brittleness. This paper aims to review the literature and publications related to hydrogen brittleness on high-strength steel and its impact on steel pipes used in aqueous environments. The paper focuses on recent developments and methods that have contributed to a better understanding of the relationship between steel structure, properties, and performance, with a particular focus on the factors that cause and affect hydrogen brittleness. This scientific manuscript was presented at the sessions of the International Renewable Energy, Gas, Oil and Climate Change Conference "iREGO" in the period of April 25-27, 2026. Tripoli - Libya............. KeyWords: ...........Hydrogen Embrittlement, High-Strength Steel, Steel Pipeline, HEE, HPT, HELP, AIDE.