Introduction of API 5L pipeline steel plate sheet:
Pipeline steel refers to a kind of steel with special requirements used to transport oil, natural gas and other pipelines.
The carbon content of the pipeline steel is required to be low, and the strength of the pipeline steel is ensured by increasing the manganese content and adding trace elements such as niobium, titanium, vanadium and molybdenum. For pipeline steel, in addition to the required strength and plasticity index, the requirement for toughness index is an outstanding feature, including the impact energy of API 5L pipeline steel plate sheet, impact transition temperature and toughness index of welding heat affected zone and welding metal. In addition, there are requirements for strain aging, weldability, stress corrosion and other indicators for the API 5L pipeline steel plate sheet.
Specification of API 5L pipeline steel plate sheet:
Standard | Class | Typical Steel Grades | Thickness (mm) |
API 5L PSL1 | Grade A (L210) | ≤52mm | |
API 5L PSL2 | Grade B (L245) | ≤52mm |
Application of API 5L pipeline steel plate sheet:
API 5L pipeline steel plate sheet is always used to produce line pipes that is mainly used to transport oil, natural gas and other pipelines.
The pipeline steel can be divided into three types: high cold, high sulfur area and submarine laying. From the development trend, laying conditions, main failure forms and comprehensive evaluation of failure causes of oil and gas transmission pipes, it is not only required the pipeline steel have good mechanical properties (thick wall, high strength, high toughness, wear resistance), but also large diameter, weldability,
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