| 摘要 |
High-strength rods, useful in an acid enviroment, 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 CO2 or other acidifying substances may be present are manufactured from cold-deformed carbon steel or cold-deformed low-alloyed steel. A preferred composition for the steel is: C O-1.20% Si O-1.0% Mn O-3.0% Cr O-2.0% Ni O-1.0% Mo O-1.0% Cu O-1.0% V
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