API 5L Gr.A steel is one mainly of steel for large diameter pipes. API-A steel is used for pressure liquid transport, oil, gas, water and other liquid transportation, oilfield engineering, ductwork, construction, Steel pipe and oil and gas project which use pipes.
API Gr.A steel is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow — liquids and gases (fluids), slurries, powders, masses of small solids. It can also be used for structural applications; hollow pipe is far stiffer per unit weight than solid members.
API 5L GR.A chemical composition:C:<=0.0.22 Mn:<=0.9 S :<=0.03 P :<=0.03
For API 5L GR.A Mechanical properties, it contains maximum 48 ksi tensile strength, minimum yield stength 30 ksi. And also the elongation is minimum 28%.
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